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• running bash scripts in php

  - by HDawg

  I have two computers. On the first computer I have apache running with all my web code. On the second computer I have large amounts of data stored with a retrieval script (the script usually takes hours to run). I am essentially creating a web UI to access this data without any time delay. so I call: exec("bash initial.bash"); this is a driver script that is in my Apache folder. It calls the script on the other computer. calling: ssh otherMachine temp.bash& this script invokes the data retrieval script on the second computer. If I call initial.bash in the terminal, everything works smoothly and successfully, but if I call it in my PHP file, then all my commands in initial.bash run, with the exception of ssh otherMachine temp.bash&. I put the & at the end of that, so that temp.bash will run in the background, since it does take a few hours to complete. I am not sure why the nested script is not running when invoked by Apache. Is there a better alternative than using exec or shell_exec to call a script, which ultimately calls another script. The reason I don't call a script on the second machine directly is because of the time it takes the program to run. Shell_exec does not render the php page until the script is complete.

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• Can't log in via SSH to any accounts set to use /bin/bash as a default shell

  - by Gui Ambros

  I'm trying to install bash as the default shell on a ARM Linux running on an embedded device (Synology DS212+ NAS). But there's something really wrong, and I can't figure out what it is. Symptoms: 1) Root has /bin/bash as default shell, and can log in normally via SSH: $ grep root /etc/passwd root:x:0:0:root:/root:/bin/bash $ ssh root@NAS root@NAS's password: Last login: Sun Dec 16 14:06:56 2012 from desktop # 2) joeuser has /bin/bash as default shell, and receives "Permission denied" when trying to log in via SSH: $ grep joeuser /etc/passwd joeuser:x:1029:100:Joe User:/home/joeuser:/bin/bash $ ssh joeuser@localhost joeuser@NAS's password: Last login: Sun Dec 16 14:07:22 2012 from desktop Permission denied, please try again. Connection to localhost closed. 3) changing joeuser's shell back to /bin/sh: $ grep joeuser /etc/passwd joeuser:x:1029:100:Joe User:/home/joeuser:/bin/sh $ ssh joeuser@localhost Last login: Sun Dec 16 15:50:52 2012 from localhost $ To make things even more strange, I can log in as joeuser using /bin/bash using the serial console (!). Also a su - joeuser as root works fine, so the bash binary itself is working fine. In an act of despair, I changed joeuser's uid to 0 on /etc/passwd, but also didn't work, so it doesn't seem to be anything permission related. Seems that bash is doing some extra checking that sshd didn't like, and blocking the connections for non-root users. Maybe some sort of sanity checking - or terminal emulation - that is triggering the SIGCHLD, but only when called via ssh. I already went through every single item on sshd_config, and also put SSHD in debug mode, but didn't find anything strange. Here's my /etc/ssh/sshd_config: LogLevel DEBUG LoginGraceTime 2m PermitRootLogin yes RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile %h/.ssh/authorized_keys ChallengeResponseAuthentication no UsePAM yes AllowTcpForwarding no ChrootDirectory none Subsystem sftp internal-sftp -f DAEMON -u 000 And here's the output from /usr/syno/sbin/sshd -d, showing the failed attempt of joeuser trying to log in, with /bin/bash as the shell: debug1: Config token is loglevel debug1: Config token is logingracetime debug1: Config token is permitrootlogin debug1: Config token is rsaauthentication debug1: Config token is pubkeyauthentication debug1: Config token is authorizedkeysfile debug1: Config token is challengeresponseauthentication debug1: Config token is usepam debug1: Config token is allowtcpforwarding debug1: Config token is chrootdirectory debug1: Config token is subsystem debug1: HPN Buffer Size: 87380 debug1: sshd version OpenSSH_5.8p1-hpn13v11 debug1: read PEM private key done: type RSA debug1: private host key: #0 type 1 RSA debug1: read PEM private key done: type DSA debug1: private host key: #1 type 2 DSA debug1: read PEM private key done: type ECDSA debug1: private host key: #2 type 3 ECDSA debug1: rexec_argv[0]='/usr/syno/sbin/sshd' debug1: rexec_argv[1]='-d' Set /proc/self/oom_adj from 0 to -17 debug1: Bind to port 22 on ::. debug1: Server TCP RWIN socket size: 87380 debug1: HPN Buffer Size: 87380 Server listening on :: port 22. debug1: Bind to port 22 on 0.0.0.0. debug1: Server TCP RWIN socket size: 87380 debug1: HPN Buffer Size: 87380 Server listening on 0.0.0.0 port 22. debug1: Server will not fork when running in debugging mode. debug1: rexec start in 6 out 6 newsock 6 pipe -1 sock 9 debug1: inetd sockets after dupping: 4, 4 Connection from 127.0.0.1 port 52212 debug1: HPN Disabled: 0, HPN Buffer Size: 87380 debug1: Client protocol version 2.0; client software version OpenSSH_5.8p1-hpn13v11 SSH: Server;Ltype: Version;Remote: 127.0.0.1-52212;Protocol: 2.0;Client: OpenSSH_5.8p1-hpn13v11 debug1: match: OpenSSH_5.8p1-hpn13v11 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.8p1-hpn13v11 debug1: permanently_set_uid: 1024/100 debug1: MYFLAG IS 1 debug1: list_hostkey_types: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: AUTH STATE IS 0 debug1: REQUESTED ENC.NAME is 'aes128-ctr' debug1: kex: client->server aes128-ctr hmac-md5 none SSH: Server;Ltype: Kex;Remote: 127.0.0.1-52212;Enc: aes128-ctr;MAC: hmac-md5;Comp: none debug1: REQUESTED ENC.NAME is 'aes128-ctr' debug1: kex: server->client aes128-ctr hmac-md5 none debug1: expecting SSH2_MSG_KEX_ECDH_INIT debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user joeuser service ssh-connection method none SSH: Server;Ltype: Authname;Remote: 127.0.0.1-52212;Name: joeuser debug1: attempt 0 failures 0 debug1: Config token is loglevel debug1: Config token is logingracetime debug1: Config token is permitrootlogin debug1: Config token is rsaauthentication debug1: Config token is pubkeyauthentication debug1: Config token is authorizedkeysfile debug1: Config token is challengeresponseauthentication debug1: Config token is usepam debug1: Config token is allowtcpforwarding debug1: Config token is chrootdirectory debug1: Config token is subsystem debug1: PAM: initializing for "joeuser" debug1: PAM: setting PAM_RHOST to "localhost" debug1: PAM: setting PAM_TTY to "ssh" debug1: userauth-request for user joeuser service ssh-connection method password debug1: attempt 1 failures 0 debug1: do_pam_account: called Accepted password for joeuser from 127.0.0.1 port 52212 ssh2 debug1: monitor_child_preauth: joeuser has been authenticated by privileged process debug1: PAM: establishing credentials User child is on pid 9129 debug1: Entering interactive session for SSH2. debug1: server_init_dispatch_20 debug1: server_input_channel_open: ctype session rchan 0 win 65536 max 16384 debug1: input_session_request debug1: channel 0: new [server-session] debug1: session_new: session 0 debug1: session_open: channel 0 debug1: session_open: session 0: link with channel 0 debug1: server_input_channel_open: confirm session debug1: server_input_global_request: rtype [email protected] want_reply 0 debug1: server_input_channel_req: channel 0 request pty-req reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req pty-req debug1: Allocating pty. debug1: session_new: session 0 debug1: session_pty_req: session 0 alloc /dev/pts/1 debug1: server_input_channel_req: channel 0 request shell reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req shell debug1: Setting controlling tty using TIOCSCTTY. debug1: Received SIGCHLD. debug1: session_by_pid: pid 9130 debug1: session_exit_message: session 0 channel 0 pid 9130 debug1: session_exit_message: release channel 0 debug1: session_by_tty: session 0 tty /dev/pts/1 debug1: session_pty_cleanup: session 0 release /dev/pts/1 Received disconnect from 127.0.0.1: 11: disconnected by user debug1: do_cleanup debug1: do_cleanup debug1: PAM: cleanup debug1: PAM: closing session debug1: PAM: deleting credentials Here you have the full output of sshd -dd, together with ssh -vv. Bash: # bash --version GNU bash, version 3.2.49(1)-release (arm-none-linux-gnueabi) Copyright (C) 2007 Free Software Foundation, Inc. The bash binary was cross compiled from source. I also tried using a pre-compiled binary from the Optware distribution, but had the exact same problem. I checked for missing shared libraries using objdump -x, but they're all there. Any ideas what could be causing this "Permission denied, please try again."? I'm almost diving in the bash source code to investigate, but trying to avoid hours chasing something that may be silly.

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• How can I run this script on startup, restart, and shutdown?

  - by Exeleration-G

  I'm using Ubuntu 11.10. I've written a script, that synchronises a directory in ~ with a directory on /dev/sda4, using Unison. Before, I had this script running every five minutes with no problems, using crontab. Right now, I want to execute this script at startup, restart and shutdown only. This is what the script looks like: #!/bin/bash unison -perms 0 -batch "/mnt/Data/Syncfolder/" "/home/myname/Syncfolder/" My crontab configuration was as follows: m h dom mon dow command 0,5,10,15,20,25,30,35,40,45,50,55 * * * * sh /usr/local/bin/s4lj.bash Note that I copied the script from ~ to /usr/local/bin/ first, to avoid root problems. I've read How to execute script on shutdown? and How to write an init script that will execute an existing start script?. After doing that, I've done this: I've made s4lj.bash executable, and then copied it to /etc/init.d/. For startup, I've made a symlink in /etc/rc2.d/ to /etc/init.d/s4lj.bash, and renamed it to S70s4lj.bash. For restart, I've made a symlink in /etc/rc6.d/ to /etc/init.d/s4lj.bash, and renamed it to K70s4lj.bash. For shutdown, I've made a symlink in /etc/rc0.d/ to /etc/init.d/s4lj.bash, and renamed it to K70s4lj.bash. Still, the script won't be run in any of these situations. How can I make the script get executed? I'd be happiest with a proper *.conf file in /etc/init. Thanks in advance.

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• Run FTP session from bash script

  - by Adam Salkin

  I'm trying to write a BASH script to test if an FTP site that I own is running. I therefore want the bash script to connect to the FTP site, log in with a dummy account and redirect the output to a file that I can then grep to confirm that the login succeeded. (I know that putting user/pass in a file is not recommended, but this dummy account is chrooted to one empty directory and can't escape to the shell, and in any case I'm the only user who can login to a shell prompt.) I'm using the BASH shell on Ubuntu. I created a file called "ftp-dummy" which looks like this username password And I then did this from the prompt: adam$ ftp my.ftpsite.com < ftp-dummy This does not work - I don't see the normal welcome message and the output is: Password:Name (my.ftpsite.com:adam) : I tried removing the space between the < and the filename - same result. If I redirect the output to a testfile, the testfile shows: Name (my.ftpsite.com:adam): ?Invalid command And I still get a Password prompt on STDOUT I also tried using echo and get the same result: echo -e "username \npassword \n" | ftp my.ftpsite.com I don't see why I'm not seeing the normal welcome message or why the input is not being read from the file. Any help would be much appreciated. Thanks, Adam

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• bash script with permanent ssh connection

  - by samuelf

  I use a bash script which runs /usr/bin/ssh -f -N -T -L8888:127.0.0.1:3306 [email protected] However, when I run the bash script, it waits.. I see the connection coming up but the script doesn't exit.. it's like it's waiting for the SSH process to finish, because when I manually kill it the bash script finishes as well. Any ideas how to resolve this? UPDATE: I have croned this script.. and the cron process is the one that becomes a zombie.. the actual scripts runs just fine, sorry about that, with ps -auxf I get: root 597 0.0 0.7 2372 912 ? Ss Jul12 0:00 cron root 2595 0.0 0.8 2552 1064 ? S 02:09 0:00 \_ CRON 1001 2597 0.0 0.0 0 0 ? Zs 02:09 0:00 \_ [sh] <defunct> 1001 2603 0.0 0.0 0 0 ? Z 02:09 0:00 \_ [cron] <defunct> and when I kill the ssh the defuncts disappear.. why would they become defunct?

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• bash script with permanent ssh connection

  - by samuelf

  Hi, I use a bash script which runs /usr/bin/ssh -f -N -T -L8888:127.0.0.1:3306 [email protected] However, when I run the bash script, it waits.. I see the connection coming up but the script doesn't exit.. it's like it's waiting for the SSH process to finish, because when I manually kill it the bash script finishes as well. Any ideas how to resolve this? UPDATE: I have croned this script.. and the cron process is the one that becomes a zombie.. the actual scripts runs just fine, sorry about that, with ps -auxf I get: root 597 0.0 0.7 2372 912 ? Ss Jul12 0:00 cron root 2595 0.0 0.8 2552 1064 ? S 02:09 0:00 \_ CRON 1001 2597 0.0 0.0 0 0 ? Zs 02:09 0:00 \_ [sh] <defunct> 1001 2603 0.0 0.0 0 0 ? Z 02:09 0:00 \_ [cron] <defunct> and when I kill the ssh the defuncts disappear.. why would they become defunct?

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• Require a very simple bash-based webserver for logging XML POST [on hold]

  - by Syffys

  As in title, it's for testing purpose and I need it to be extremely light (1 line to 1 single light file). Here is a XML query sample: XML_QUERY=$(cat <<EOF <?xml version='1.0' encoding='UTF-8'?> <Test></Test> EOF ) curl -H "Content-type: text/xml; charset=utf-8" -H "Soapaction: \"\"" -k -d "${XML_QUERY}" http://localhost:8088 Here are some of the tracks I have found so far even if I wasnt able to adapt them to work as I expect: Netcat minimal webserver: Problem is that my nc does not have the -q option, so the connection is closing before delivering the XML content Netcat Only webserver: Same as above Thanks in advance! EDIT: As it's been asked, I'm running Linux Redhat, even if the distro does not really matter and the OS implied since I'm asking a bash-based solution... Also about my topic being on hold: "Instead, describe your situation and the specific problem you're trying to solve" = I though this was exactly what I was doing, but ok I'll reword: My situation: bash environment (which can also include some standard linux tool: netcat, python or whatever) My specific problem: please see title: Require a very simple bash-based webserver for logging XML in HTTP POST for testing purpose

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• Cannot cd to parent directory with cd dirname

  - by Sharjeel Sayed

  I have made a bash command which generates a one liner for restarting all Weblogic ( 8,9,10) instances on a server /usr/ucb/ps auwwx | grep weblogic | tr ' ' '\n' | grep security.policy | grep domain | awk -F'=' '{print $2}' | sed 's/weblogic.policy//' | sed 's/security\///' | sort | sed 's/^/cd /' | sed 's/$/ ; cd .. ; \/recycle_script_directory_path\/recycle/ ;' | tr '\n' ' ' To restart a Weblogic instance, the recycle ( /recycle_script_directory_path/recycle/) script needs to be initiated from within the domain directory as the recycle script pulls some application information from some .ini files in the domain directory. The following part of the script generates a line to cd to the parent directory of the app i.e. the domain directory sed 's/$/ ; cd .. ; \/recycle_script_directory\/recycle/ ;' | tr '\n' ' ' I am sure there is a better way to cd to the parent directory like cd dirname but every time i run the following cd command , it throws a "Variable syntax" error. cd $(dirname '/domain_directory_path/app_name') How do i incorporate the cd to the directory name in a better way ? Also are there any enhancements for my bash command Some info on my script 1) The following part lists out the weblogic instances running along with their full path /usr/ucb/ps auwwx | grep weblogic | tr ' ' '\n' | grep security.policy | grep domain | awk -F'=' '{print $2}' | sed 's/weblogic.policy//' | sed 's/security\///' | sort 2) The grep domain part is required since all domain names have domain as the suffix

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• Bash completion for Maven escapes colon

  - by armandino

  I added bash completion for Maven following the docs: http://maven.apache.org/guides/mini/guide-bash-m2-completion.html Everything works well except for goals that use a colon. For instance, instead of mvn eclipse:eclipse completion escapes the colon mvn eclipse\:eclipse Any suggestions how this can be fixed? I'm using Ubuntu 8.10 (2.6.27-17-generic) and $ bash -version GNU bash, version 3.2.39(1)-release (i486-pc-linux-gnu)

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• Testing bash scripts

  - by nimcap

  We have a system that has some bash scripts running besides Java code. Since we are trying to "Test Everything That Could Possibly Break" and those bash scripts may break, we want to test them. The problem is it is hard to test the scripts. Is there a way or a best practice to test bash scripts? Or should we quit using bash scripts and look for alternative solutions that are testable?

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• Bash: Syntax error: redirection unexpected

  - by Werner

  I do this in a script: read direc <<< $(basename `pwd`) and I get: Syntax error: redirection unexpected in an ubuntu machine /bin/bash --version GNU bash, version 4.0.33(1)-release (x86_64-pc-linux-gnu) while I do not get this error in another suse machine: /bin/bash --version GNU bash, version 3.2.39(1)-release (x86_64-suse-linux-gnu) Copyright (C) 2007 Free Software Foundation, Inc. Why the error? Thanks

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• How to find out where alias (in the bash sense) is defined when running Terminal in Mac OS X

  - by Richard Fuhr

  How can I find out where an alias is defined on my system? I am referring to the kind of alias that is used within a Terminal session launched from Mac OS X (10.6.3). For example, if I enter the alias command with no parameters at a Terminal command prompt, I get a list of aliases that I have set, for example, this is one of them alias mysql='/usr/local/mysql/bin/mysql' However, I have searched all over my system using Spotlight and mdfind in various startup files and so far can not find where this alias has been defined ( I did it a long time ago and didn't write down where I assigned the alias).

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• remotely running find -exec options

  - by Michael Merchant

  I'm trying to setup a bash process for deploying my django project onto a linux server. Through cygwin, I'm running a script that is calling scp to copy my files over. Is there a similar command to delete *.pyc files. As of now, I've only been able to accomplish this locally after using ssh with: find . -name "*.pyc" -exec rm -rf {} \; I'm looking for some kind of command to call remotely that would be equivalent.

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• How to prevent code/option injection in a bash script

  - by asmaier

  I have written a small bash script called "isinFile.sh" for checking if the first term given to the script can be found in the file "file.txt": #!/bin/bash FILE="file.txt" if [ `grep -w "$1" $FILE` ]; then echo "true" else echo "false" fi However, running the script like > ./isinFile.sh -x breaks the script, since -x is interpreted by grep as an option. So I improved my script #!/bin/bash FILE="file.txt" if [ `grep -w -- "$1" $FILE` ]; then echo "true" else echo "false" fi using -- as an argument to grep. Now running > ./isinFile.sh -x false works. But is using -- the correct and only way to prevent code/option injection in bash scripts? I have not seen it in the wild, only found it mentioned in ABASH: Finding Bugs in Bash Scripts.

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• Wrapper around bash, control STDIN and STDOUT

  - by blinry

  I would like to talk to a interactive bash process. Here is an example, so you know what I want to archieve: Program starts a new bash process. User types "ls" into my program. Program sends this command to the bash process. Program reads all available output of the bash (including the prompt) and displays it back to the user. GOTO 1 As you can guess, there is much room for nifty manipulations here and there... ;-) It would be wonderful if this also worked for subprocesses (started by the bash process) and curses-based programs. I would like to implement this functionality in Ruby, and already have experimented with IO.popen, but strange things happen. You are also welcome to do this in other languages.

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• How to get bash to insert ' in the output

  - by ~danieljamesthomas

  Hi everybody, I'm rather new to bash, and somehow just haven't found out what I'm doing wrong here: (this is a small bash script calling my generator) if [ -n $folder ]; then $zorbalocation -q $generator -f -e files=\"$lFiles\" -e folder=\"lFolder\" else $zorbalocation -q $generator -f -e files=\"$lFiles\" -e folder=\".\" fi Now, obviously I want bash to execute these commands, depending on the content of folder. But, for some reason, bash insists on putting apostrophes ( ' ) around files=... and folder =... So, it tries to execute ../../../zorba/build/bin/zorba -q generator.xq -f -e 'files="test.xqlib"' -e 'folder="."' instead of ../../../zorba/build/bin/zorba -q generator.xq -f -e files="test.xqlib" -e folder="." Does anybody know why bash insists on inserting the apostrophes there? A nice day to everyone Danny

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• Using bash shell from within PHP

  - by Dan

  Hi everyone, In my terminal window (using Max OS X) my shell is bash. However when I run a command in PHP via shell_exec or backtick operators I see that PHP is using the Bourne Shell (sh). Here's an example of what I'm seeing: From within my terminal window: $ echo $0 - bash Also if I call php as follows: $ php -r "echo shell_exec('echo $0');" -bash However, if I create a script called test.php with the following: <?php echo shell_exec('echo $0'); ?> And then run test php I get the following: $ php test.php sh I'm wanting to use the bash shell when calling shell_exec - why is it choosing the Bourne shell and can I force it to use bash? Thanks! Dan

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• A command before every bash command

  - by jthoenes

  Does anyone know a mean of putting a 'time' command before every command in a bash session?

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• A command before every bash command

  - by jthoenes

  Does anyone know a mean of putting a 'time' command before every command in a bash session?

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• Bash on Snow Leopard doesn't obey terminal colours

  - by karbassi

  With the new version of Snow Leopard, OSX upgraded the bash version to GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin10.0). Now, my .bashrc sets the following settings: # Colors export TERM=xterm-color export GREP_OPTIONS='--color=auto' GREP_COLOR='1;32' export CLICOLOR=1 export LSCOLORS=ExGxFxDxCxHxHxCbCeEbEb # Setup some colors to use later in interactive shell or scripts export COLOR_NC='\e[0m' # No Color export COLOR_WHITE='\e[1;37m' export COLOR_BLACK='\e[0;30m' export COLOR_BLUE='\e[0;34m' export COLOR_LIGHT_BLUE='\e[1;34m' export COLOR_GREEN='\e[0;32m' export COLOR_LIGHT_GREEN='\e[1;32m' export COLOR_CYAN='\e[0;36m' export COLOR_LIGHT_CYAN='\e[1;36m' export COLOR_RED='\e[0;31m' export COLOR_LIGHT_RED='\e[1;31m' export COLOR_PURPLE='\e[0;35m' export COLOR_LIGHT_PURPLE='\e[1;35m' export COLOR_BROWN='\e[0;33m' export COLOR_YELLOW='\e[1;33m' export COLOR_GRAY='\e[1;30m' export COLOR_LIGHT_GRAY='\e[0;37m' The colours are used later on for output. This used to work in previous version of OSX but not my output is as such: Some ideas that have not worked. Switching Terminal.app from 64-bit to 32-bit.

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• Linux Bash Script, Single Command But Multiple Lines?

  - by Jay LaCroix

  I have the following script I wrote by searching Google, and it backs up my Linux system to an archive: #!/bin/bash # init DATE=$(date +20%y%m%d) tar -cvpzf /share/Recovery/Snapshots/$HOSTNAME_$DATE.tar.gz --exclude=/proc --exclude=/lost+found --exclude=/sys --exclude=/mnt --exclude=/media --exclude=/dev --exclude=/share/Archive / This works, but I am wondering if I can format the script to show the command over multiple lines, something like this, so it is easy to edit later: tar -cvpzf /share/Recovery/Snapshots/$HOSTNAME_$DATE.tar.gz --exclude=/proc --exclude=/lost+found --exclude=/sys --exclude=/mnt --exclude=/media --exclude=/dev --exclude=/share/Archive / That way it is easier to read and edit later. Is it possible to format a Bash script this way?

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• Variable parsing with Bash and wget

  - by Bill Westrup

  I'm attempting to use wget in a simple bash script to grab a jpeg image from an Axis camera. This script outputs a file named JPEGOUT, instead of the desired output, which should be a timestamp jpeg (ex: 201209292040.jpg) . Changing the variable in the wget statement from JPEGOUT to $JPEGOUT makes wget fail with "wget: missing URL" error. The weird thing is wget parses the $IP vairable correctly. No luck on the output file name. I've tried single quotes, double quotes, parenthesis: all to no luck. Here's the script !/bin/bash IP=$1 JPEGOUT= date +%Y%m%d%H%M.jpg wget -O JPEGOUT http://$IP/axis-cgi/jpg/image.cgi?resolution=640x480&compression=25 Any ideas on how to get the output file name to parse correctly?

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• Why does bash invocation differ on AIX when using telnet vs ssh

  - by Philbert

  I am using an AIX 5.3 server with a .bashrc file set up to echo "Executing bashrc." When I log in to the server using ssh and run: bash -c ls I get: Executing bashrc . .. etc.... However, when I log in with telnet as the same user and run the same command I get: . .. etc.... Clearly in the telnet case, the .bashrc was not invoked. As near as I can tell this is the correct behaviour given that the shell is non-interactive in both cases (it is invoked with -c). However, the ssh case seems to be invoking the shell as interactive. It does not appear to be invoking the .profile, so it is not creating a login shell. I cannot see anything obviously different between the environments in the two cases. What could be causing the difference in bash behaviour?

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• bash completion with aliases

  - by dstarh

  I have a bunch of bash completion scripts set up (mostly using bash-it and some manually setup). I also have a bunch of aliases setup for common tasks like gco for git checkout. Right now I can type git checkout d tab and develop is completed for me but when I type gco d tab it does not complete. I'm assuming this is because the completion script is completing on git and it fails to see gco. Is there a way to generically/programmatically get all of my completion scripts to work with my aliases? Not being able to complete when using the alias kind of defeats the purpose of the alias.

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• Bash Script Exits su or ssh Session Rather than Script

  - by Russ

  I am using CentOS 5.4. I created a bash script that does some checking before running any commands. If the check fails, it will simply exit 0. The problem I am having is that on our server, the script will exit the su or ssh session when the exit 0 is called. #!/bin/bash # check if directory has contents and exit if none if [ -z "`ls /ebs_raid/import/*.txt 2>/dev/null`" ]; then echo "ok" exit 0 fi here is the output: [root@ip-10-251-86-31 ebs_raid]# . test.sh ok [russ@ip-10-251-86-31 ebs_raid]$ as you can see, I was removed from my sudo session, if I wasn't in the sudo session, it would have logged me out of my ssh session. I am not sure what I am doing wrong here or where to start.

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