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Search found 4783 results on 192 pages for 'bash completion'.

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  • Wget - if / else download condition?

    - by Kai
    I want wget to prefer a certain filetype over another, if the files have the same basename. For example: if foo.ogg available, don't download foo.mp3 the way i use wget so far to crawl/automatically download (if anyone is interested): wget -Dfoo.com -I /folder/ -r -l 1 -nc -A.ogg,.mp3 -i http://www.foo.com/folder/ but this, of course, gets me .mp3 AND .ogg files. It often also gets me image files like .png which i didn't want in the first place, and discards them afterwards. Any Ideas? (Syntax-Explanation: -D: download only from this Domain -I: download only from this subfolder of Domain -r: recursive (follow links and directory structure) -l 1: follow only 1 link deep -nc: no clobber = download only if file doesn't exist -A: accept/download only all *.ogg and *.mp3 (discard necessary html-files) -i: download-url/starting point)

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  • rc.local is not executed on bootup ubuntu

    - by Alexander
    Im on Ubuntu 10.04. I want to execute script on system boot. I added it to rc.local. If I execute rc.local manually it works fine. If I boot system in recovery mode(2nd string in boot menu) it also works fine. But if I boot normally it is not executed. However i added sleep 20 to my script and there is a pause at the end of boot process, but nothing more is executed. Thanks I think, it soesnt depend on contents of the script but anyway #!/bin/sh -e sleep 20 sudo service ssh start su -c 'service pgsql start' postgres sudo svnserve -d su -c 'hamachi start' root su -c 'hamachi login' root exit 0

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  • Running a command or script in terminal from anywhere by adding it to the PATH, what am I doing wrong?

    - by Joe
    On osx/linux I want to be able to run a command/script on the terminal from anywhere which links to a program. ie I want to be able to run: alloy that runs: /usr/local/share/npm/lib/node_modules/alloy/bin/alloy I'm guessing adding to .bashrc is the best way? I've tried running: export PATH="$PATH:/usr/local/share/npm/lib/node_modules/alloy/bin" and also: export PATH="$PATH:/usr/local/share/npm/lib/node_modules/alloy/bin/alloy" Then I started a new terminal window but the alloy command doesnt work. Am I missing something?

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  • Two parts: linux startup script to connect to bluetooth and cron to keep it connected

    - by D.R.
    I have a mini bluetooth keyboard and a Raspberry Pi running a Debian-based distro. I know the MAC address of the keyboard but for this question, let's just use AA:BB:CC:DD:EE:FF. Right now I have to have a wired keyboard connected as well as my bluetooth dongle for the mini-keyboard and on the wired keyboard, I have to run the following when the device boots up: sudo hidd --connect AA:BB:CC:DD:EE:FF If the device goes idle for too long, then the bluetooth disconnects and I have to pull out my wired keyboard and retype that same command. What I'm looking for it a way to have that command run at startup and a way to sense if it gets disconnected so that it will auto reconnect. The annoying thing is that they keyboard has to be in pairing mode (even though it has already been paired) when I run that command, otherwise it tells me the host is down. So perhaps the script needs to prevent it from disconnecting due to inactivity, otherwise I'll have to put it back in pairing mode to reconnect. So to recap: - A script to connect at startup (I can make sure to put the keyboard into pairing mode before turning it on) - A script to prevent it from disconnecting (maybe some sort of signal to send to it every 60 seconds or something?) Any help with this is greatly appreciated! StackOverflow is always the best place to find answers to weird questions! I've been searching long and hard for an answer, but finally had to resort to coming here! Thanks!

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  • How would you simplify this command?

    - by Andrei Serdeliuc
    I'm quite new to strace / netstat / etc. I'm using this command to get a trace of the apache process handling my request (telnet), is there a way to simplify it a bit? sudo strace -o /tmp/strace -f -s4096 -r -p $(netstat -antlp | \ grep $(lsof -p `pidof telnet` | grep TCP | \ perl -n -e'/localhost:(\d+)/ && print $1') | grep apache2 | \ perl -n -e'/ESTABLISHED (\d+)/ && print $1') Thanks!

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  • xargs -I replace-str option difference

    - by foresightyj
    From my understanding, the following should mean exactly the same: ls -1 | xargs file {} ls -1 | xargs -I{} file {} if -I option is not specified, it is default to -I{}. I want to list all files in the current directory and run file command on each of them. Some have spaces in their names. However, I noticed the difference. See below: $ ls -1 Hello World $ ls -1 | xargs file {} {}: ERROR: cannot open `{}' (No such file or directory) Hello: ERROR: cannot open `Hello' (No such file or directory) World: ERROR: cannot open `World' (No such file or directory) $ ls -1 | xargs -I{} file {} Hello World: directory With -I{} explicitly specified, blanks in file names are treated as expected.

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  • Silent and scripted install of CPAN and Perl modules?

    - by Mikael Grönfelt
    I need to install CPAN and some Perl modules automatically in a Scientific Linux (RHEL) installation script. Unfortunately the specific modules I want (at least one of them) cannot be found as RPM:s as far as I've seen. So I need to install CPAN, configure it automatically (or with a config file) and then install the wanted modules (including dependencies) automatically as well. This doesn't seem like a very unusual requirement, but I haven't seen any really good documentation on this. The problem is that whenever CPAN is launched for the first time an interactive configuration runs. Can this be skipped somehow? And how do I launch module installations directly from the command line?

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  • How do I correctly SSH port forward using LiveReload on Redhat?

    - by program247365
    Referencing this page: http://feedback.livereload.com/knowledgebase/articles/86280-if-you-edit-files-directly-on-your-server It says you can remotely port forward the LiveReload specific port of 35729, using this command: ssh -L 35729:127.0.0.1:35729 mylogin@myremoteserverIP When I run the -v option, I get: debug1: Local connections to LOCALHOST:35729 forwarded to remote address 127.0.0.1:35729 debug1: Local forwarding listening on ::1 port 35729. debug1: channel 0: new [port listener] debug1: Local forwarding listening on 127.0.0.1 port 35729. debug1: channel 1: new [port listener] debug1: channel 2: new [client-session] debug1: Entering interactive session. debug1: Sending environment. debug1: client_input_channel_req: channel 2 rtype [email protected] reply 1 debug1: Connection to port 35729 forwarding to 127.0.0.1 port 35729 requested. debug1: channel 3: new [direct-tcpip] channel 3: open failed: connect failed: Connection refused debug1: channel 3: free: direct-tcpip: listening port 35729 for 127.0.0.1 port 35729, connect from 127.0.0.1 port 63673, nchannels 4 I thought editing my /etc/services with this line, would work, but it doesn't: livereload 35729/tcp # livereload usage with guard-livereload Every time I attempt to connect with the browser extension, I believe It's getting blocked by my server. What am I missing here? Do I need to edit /etc/services for this to work?

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  • tail -f and then exit on matching string

    - by Patrick
    I am trying to configure a startup script which will startup tomcat, monitor the catalina.out for the string "Server startup", and then run another process. I have been trying various combinations of tail -f with grep and awk, but haven't got anything working yet. The main issue I am having seems to be with forcing the tail to die after grep or awk have matched the string. I have simplified to the following test case. test.sh is listed below: #!/bin/sh rm -f child.out ./child.sh > child.out & tail -f child.out | grep -q B child.sh is listed below: #!/bin/sh echo A sleep 20 echo B echo C sleep 40 echo D The behavior I am seeing is that grep exits after 20 seconds , however the tail will take a further 40 seconds to die. I understand why this is happening - tail will only notice that the pipe is gone when it writes to it which only happens when data gets appended to the file. This is compounded by the fact that tail is to be buffering the data and outputting the B and C characters as a single write (I confirmed this by strace). I have attempted to fix that with solutions I found elsewhere, such as using unbuffer command, but that didn't help. Anybody got any ideas for how to get this working how I expect it? Or ideas for waiting for successful Tomcat start (thinking about waiting for a TCP port to know it has started, but suspect that will become more complex that what I am trying to do now). I have managed to get it working with awk doing a "killall tail" on match, but I am not happy with that solution. Note I am trying to get this to work on RHEL4.

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  • Unable to specify parameters to cvlc in a script

    - by VxJasonxV
    I'm creating a script that issues a few curl commands in order to access a time-protected mms stream link, then set up a relay using cvlc (vlc's command line interface) for my own use on an unencumbered player. The curl aspect of this is working, as I can run as a browser and curl side by side and get the same access url. (It's time locked meaning the stream will work forever, but you have to connect quickly or the URL will time out.) The very end of the script prints the command I will run, which is then followed up by "exec $CMD". When I echo $CMD I get: cvlc --sout '#standard{access=http,mux=asf,dst=0.0.0.0:58194}' mms://[...] Manually Copy/Pasting this command in, verbatim, works perfectly fine, but as part of a script, the cvlc execution output says: [0x9743d0] main interface error: no suitable interface module [0x962120] main libvlc error: interface "globalhotkeys,none" initialization failed [0x9743d0] dummy interface: using the dummy interface module... [0xb16e30] stream_out_standard stream out error: no mux specified or found by extension [0xb16ad0] main stream output error: stream chain failed for `standard{mux="",access="",dst="'#standard{access=http,mux=asf,dst=0.0.0.0:58194}'"}' [0xb11cd0] main input error: cannot start stream output instance, aborting [0xb11f70] signals interface error: Caught Interrupt signal, exiting... Why is --sout behaving one way in a script (non-interactive shell?) vs. another way in the foreground (interactive shell) ?

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  • readlink: illegal option -- f

    - by Scott
    Recently the script was working fine, but from some days I'm receiving such message, while running the readlink -f "$0" command: readlink: illegal option -- f usage: readlink [-n] [file ...] I was running the following code to debug: #!/bin/sh DIR=`pwd` RLPATH=`which readlink` RLOUT=`readlink -f -- "${0}"` DIROUT=`dirname -- ${RLOUT}` echo "dir: ${DIR}" echo "path: ${PATH}" echo "path to readlink: ${RLPATH}" echo "readlink output: ${RLOUT}" echo "dirname output: ${DIROUT}" Output: # ./debug.sh readlink: illegal option -- f usage: readlink [-n] [file ...] usage: dirname string [...] dir: /home/svr path: /sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/root/bin path to readlink: /usr/bin/readlink readlink output: dirname output: What is wrong ?

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  • How can I change the color of xterm titlebar?

    - by tellus55
    Hi, I want to automatically change the color of my xterm titlebar. I would like to put code into my .bashrc so that the color changes automatically (say depending on the directory I am in). I know how to change the prompt and also how to change the text displayed in the titlebar. My question is about the color of the titlebar. Right now the color is orangish. I am using Ubuntu. Thanks

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  • Shell script with ImageMagick: hangs forever?

    - by AP257
    I've generated a shell script that uses ImageMagick to convert and crop around 18000 images. Here's a sample entry (so there are 18000 of these): if [ ! -f ./cropped/16333-1.png ] then convert -crop 724x118+876+1989 ./lin/34.png ./cropped/16333-1.png echo cropping 16333-1 fi if [ ! -f ./cropped/16333-1_thumb.png ] then convert -define jpeg:size=400x100 ./cropped/16333-1.png -thumbnail '400x100>' -background transparent -gravity center -extent 400x100 ./cropped/16333-1_thumb.png echo thumbing 16333-1 fi The script only runs for about 2000 images before hanging forever. Am I missing something, or leaking memory somewhere? Thanks for your help!

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  • Run script when POST data is sent to Apache

    - by Nathan Adams
    Among my several years of running servers there seems to be a pattern with most spam activity. My question/idea is that is there a way to tell Apache to run a script when POST data is detected? What I would want to do is perform a reverse DNS lookup on the client's IP address, and then perform a DNS lookup on the hostname in the PTR record. Afterwards, perform some checks, excuse the pseudo-code: if PTR does not exist: deny POST request if IP of PTR hostname = client's IP Allow POST request else deny POST request Though I don't care about GET requests, even though they can be just as malicious, this idea is targeted towards spam comments which use POST data to send the comment data to the web server. In order to make sure there isn't much of a time delay, I would run my own recursive DNS server. Please do note, this isn't meant to be a sliver bullet to spam, but it should decrease the volume. Possible or impossible?

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  • How can i use the `eject` command on a computer i have SSH'd into?

    - by will
    So if i do eject on my machine, it works exactly as expected, however, if i ssh into the machine next to me, and do the same thing, it does not work... my computer: eject: using default device `cdrom' eject: device name is `cdrom' eject: expanded name is `/dev/cdrom' eject: `/dev/cdrom' is a link to `/dev/sr0' eject: `/dev/sr0' is not mounted eject: `/dev/sr0' is not a mount point eject: checking if device "/dev/sr0" has a removable or hotpluggable flag eject: `/dev/sr0' is not a multipartition device eject: trying to eject `/dev/sr0' using CD-ROM eject command eject: CD-ROM eject command succeeded other computer: eject: using default device `cdrom' eject: device name is `cdrom' eject: expanded name is `/dev/cdrom' eject: `/dev/cdrom' is a link to `/dev/sr0' eject: `/dev/sr0' is not mounted eject: `/dev/sr0' is not a mount point eject: checking if device "/dev/sr0" has a removable or hotpluggable flag eject: `/dev/sr0' is not a multipartition device eject: unable to open `/dev/sr0' if i look in the /dev/ dir, then i find cdrom which is a symlink to sr0 - as mentioned by the verbose outputs of eject -v. On my machine, if i try and look at it, if the drive is open, it will close it, and then give this: $ less sr0 sr0 is not a regular file (use -f to see it) so $ less -f sr0 sr0: No medium found but if i do it on the other computer, $ less -f sr0 sr0: Permission denied so i look at the files more, and get this on both machines: $ ls -la sr0 brw-rw----+ 1 root cdrom 11, 0 Nov 12 10:13 sr0 Does anyone know a way around this? I do not have root access.

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  • How do I create a Launcher in Ubuntu 9.10 that runs a shell script?

    - by mkelley33
    Here's my situation: New to Ubuntu (just installed 9.10 Karmic Koala 64 bit) Purpose: to easily run PyCharm without too much typing (ie. cd... ./pycharm.sh) Want to create desktop Launcher instead of terminal & typing (without resorting to the "Run in Terminal" option) Tried to create Launcher to executes .sh script in Document directory Right-clicked Desktop Create Launcher a. Type == Application; Browse [insert absolute path to .sh script]; no luck b. Type == Application in Terminal; Browse ...ditto I'm open to any other alternatives that involve as little typing as possible. I would like to just start Ubuntu, click Launcher icons, and have terminals spring to life, running the intended scripts. Crazy? No. Lazy? Probably. Productive? Hopefully :)

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  • How to write in a <array><dict> structure with defaults write?

    - by Hedge
    I've got a .plist-file with a structure like this: <plist version="1.0"> <array> <dict> <key>BundleIsVersionChecked</key> <false/> <key>BundleIsRelocatable</key> <false/> <key>BundleHasStrictIdentifier</key> <false/> <key>RootRelativeBundlePath</key> <string>value</string> </dict> </array> </plist> I want to add or edit the RootRelativeBundlePath-key with the defaults write command. Another possibility would be writing the whole plist-file but it has to be the same exact structure. How can I do this?

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  • Kerberos: Running an app with a parameter using krenew

    - by Mihai Todor
    I need to run an application with krenew, but the application also needs to receive a parameter via command line and I need to send its output to a file. From the documentation, it looks like this should do the trick: krenew -t -- sh -c 'compute-job > /afs/local/data/output' but, unfortunately, when I run the command below: krenew -s -- sh -c './my_app config.xml > results/test.txt &' the application just dies after a while and I can see from the output of ps aux that krenew is not running along with my_app. I am not sure what the parameter -t does, and as far as I can see, if I run krenew -s ./my_app, it works properly. I hope someone can clarify this.

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  • How to add a variable into a grep command

    - by twigg
    I'm running the following grep command var=`grep -n "keyword" /var/www/test/testfile.txt` This work just as expected but I need to insert the file name dynamically from a loop like so: var=`grep -n "keyword" /var/www/test/`basename ${hd[$i]}`.txt` But obviously the use of ` brakes this with a unexpected EOF while looking for matching ``' and unexpected end of file Any ideas of away around this?

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  • How do I use an SSH public key from a remote machine?

    - by kubi
    Setup The public keys are set up on a Macbook. I can do a passwordless push to github and a server (iMac) on the local network. The Problem I know the keys are partially setup correctly, because I everything works if I'm sitting at the Macbook. What doesn't work is when I SSH into the Macbook remotely and attempt to push to github or to the iMac server. I'm prompted to input my SSH key passphrase. What am I missing to enable pushing to github from the Macbook while logged in remotely from the iMac?

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  • non-interactively upload file to sftp server, using password

    - by matt
    Hello Guys, I know, this is not the recommended way to do this. But, I do not have another choice: I've got to set up a cron job that will regularly upload a file to an external SFTP Server (no FTP available, and I do only have a username/password for it but no key.) Still, I need to set up a cron that will regularly connect to that sftp and upload a file. sftp <<EOF put filename exit EOF therefore will not work, because sftp asks for the password, before STDIN is evaluated. What can I do, to pass the Password to sftp? Again: I am aware of the potential security risk, but I really do not have any choice here, and the server from which the file is uploaded is protected rather well.

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