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  • How to improve this bash shell script for turning hardlinks into symlinks?

    - by MountainX
    This shell script is mostly the work of other people. It has gone through several iterations, and I have tweaked it slightly while also trying to fully understand how it works. I think I understand it now, but I don't have confidence to significantly alter it on my own and risk losing data when I run the altered version. So I would appreciate some expert guidance on how to improve this script. The changes I am seeking are: make it even more robust to any strange file names, if possible. It currently handles spaces in file names, but not newlines. I can live with that (because I try to find any file names with newlines and get rid of them). make it more intelligent about which file gets retained as the actual inode content and which file(s) become sym links. I would like to be able to choose to retain the file that is either a) the shortest path, b) the longest path or c) has the filename with the most alpha characters (which will probably be the most descriptive name). allow it to read the directories to process either from parameters passed in or from a file. optionally, write a long of all changes and/or all files not processed. Of all of these, #2 is the most important for me right now. I need to process some files with it and I need to improve the way it chooses which files to turn into symlinks. (I tried using things like the find option -depth without success.) Here's the current script: #!/bin/bash # clean up known problematic files first. ## find /home -type f -wholename '*Icon* ## *' -exec rm '{}' \; # Configure script environment # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ set -o nounset dir='/SOME/PATH/HERE/' # For each path which has multiple links # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # (except ones containing newline) last_inode= while IFS= read -r path_info do #echo "DEBUG: path_info: '$path_info'" inode=${path_info%%:*} path=${path_info#*:} if [[ $last_inode != $inode ]]; then last_inode=$inode path_to_keep=$path else printf "ln -s\t'$path_to_keep'\t'$path'\n" rm "$path" ln -s "$path_to_keep" "$path" fi done < <( find "$dir" -type f -links +1 ! -wholename '* *' -printf '%i:%p\n' | sort --field-separator=: ) # Warn about any excluded files # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ buf=$( find "$dir" -type f -links +1 -path '* *' ) if [[ $buf != '' ]]; then echo 'Some files not processed because their paths contained newline(s):'$'\n'"$buf" fi exit 0

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  • ODI 11g - Scripting a Reverse Engineer

    - by David Allan
    A common question is related to how to script the reverse engineer using the ODI SDK. This follows on from some of my posts on scripting in general and accelerated model and topology setup. Check out this viewlet here to see how to define a reverse engineering process using ODI's package. Using the ODI SDK, you can script this up using the OdiPackage and StepOdiCommand classes as follows;  OdiPackage pkg = new OdiPackage(folder, "Pkg_Rev"+modName);   StepOdiCommand step1 = new StepOdiCommand(pkg,"step1_cmd_reset");   step1.setCommandExpression(new Expression("OdiReverseResetTable \"-MODEL="+mod.getModelId()+"\"",null, Expression.SqlGroupType.NONE));   StepOdiCommand step2 = new StepOdiCommand(pkg,"step2_cmd_reset");   step2.setCommandExpression(new Expression("OdiReverseGetMetaData \"-MODEL="+mod.getModelId()+"\"",null, Expression.SqlGroupType.NONE));   StepOdiCommand step3 = new StepOdiCommand(pkg,"step3_cmd_reset");   step3.setCommandExpression(new Expression("OdiReverseSetMetaData \"-MODEL="+mod.getModelId()+"\"",null, Expression.SqlGroupType.NONE));   pkg.setFirstStep(step1);   step1.setNextStepAfterSuccess(step2);   step2.setNextStepAfterSuccess(step3); The biggest leap of faith for users is getting to know which SDK classes have to be used to build the objects in the design, using StepOdiCommand isn't necessarily obvious, once you see it in action though it is very simple to use. The above snippet uses an OdiModel variable named mod, its a snippet I added to the accelerated model creation script in the post linked above.

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  • SQL Server Configuration Scripting Utility Release 9

    - by Bill Graziano
    There’s another update to my little utility to script a SQL Server’s configuration.  I use this for two purposes.  First, I use it to keep my database mirroring servers up to date.  Second, I capture the output in a version control system and keep that for historical reference. In release 3.0.9 I made the following changes: Rewrote the encrypted trigger scripting.  It will now list the encrypted triggers in a comment in the table script but can’t actually script them. It now scripts any server event notifications. You can script a single database using the /scriptdb flag.  Please note that it will also script the instance and system databases when it does this. It will script any user-defined endpoints.  This will capture your mirroring endpoints and more importantly any service broker endpoints. It will gracefully skip database mail on the Express Edition. It still doesn’t support SQL Server 2012.  I think that’s the next feature to add though.

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  • echo -e acts differently when run in a script by root on ubuntu

    - by ekrub
    When running a bash script on ubuntu 9.10, I get different behavior from bash echo's "-e" option depending on whether or not I'm running as root. Consider this script: $ cat echo-test if [ "`whoami`" = "root" ]; then echo "Running as root" fi echo Testing /bin/echo -e /bin/echo -e "foo\nbar" echo Testing bash echo -e echo -e "foo\nbar" When run as non-root user, I see this output: $ ./echo-test Testing /bin/echo -e foo bar Testing bash echo -e foo bar When run as root, I see this output: $ sudo ./echo-test Running as root Testing /bin/echo -e foo bar Testing bash echo -e -e foo bar Notice the "-e" being echoed in the last case ("-e foo" instead of "foo" on the second-to-last line). When running a script as root, the echo command runs as if "-e" was given and, if -e is given, the option itself is echoed. I can understand some subtle differences in behavior between /bin/echo and bash echo, but I would expect bash echo to behave the same no matter which user invokes it. Anyone know why this is the case? Is this a bug in bash echo? FYI -- I'm running GNU bash, version 4.0.33(1)-release (x86_64-pc-linux-gnu)

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  • Getting Windows 7 SUA's bash shell working with emacs (EmacsW32)?

    - by landstatic
    Having recently purchased Windows 7 Ultimate in order to gain access to the SUA subsystem, I have been struggling to get SUA's bash utility (/usr/local/bin/bash) working with EmacsW32. M-x shell normally invokes a shell process and pipes stdio through an Emacs buffer and this works well with Cygwin e.g. Cygwin is very slow compared to SUA however, so I am very keen to get this facility working with the EmacsW32 + SUA combo. Any tips, experience, solutions would be appreciated.

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  • How to create a bash script to check the SSH connection?

    - by chutsu
    I am in the process of creating a bash script that would log into the remote machines and create private and public keys. My problem is that the remote machines are not very reliable, and they are not always up. I need a bash script that would check if the SSH connection is up. Before actually creating the keys for future use.

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  • How can I make this if's work in Bash ?

    - by Dragos
    In bash how can I make a construction like this to work: if (cp /folder/path /to/path) && (cp /anotherfolder/path /to/anotherpath) then echo "Succeeded" else echo "Failed" fi The if should test for the $? return code of each command and tie them with &&. How can I make this in Bash ?

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  • bash script code help to make zip/tar of several folders .

    - by Arsheep
    I am very new in bash and never coded in before but this task is stuck so need to get rid of it . I need to make bash script to make a single compressed file with several dirs. Like - /home/code/bots/ /var/config/ . . . /var/system/ and all will be compressed to single file /var/file/bkup.[zip][tar.gz] Thanks in advance

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  • Bash: easy way to put a configurable load on a system?

    - by WizardOfOdds
    In order to test how a program reacts when system resources become scarce (mainly the CPU but I'm interested in disk I/O too), I'd like to put an arbitrary load on the system. Currently I'm doing something like this: #!/bin/bash while true do echo "a" >> a.txt md5 a.txt done I could also start mp3-encoding audio files, or whatever. What would be an easy and small Bash script that could be used to simulate an arbitrary load, ideally configurable using parameter(s)?

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  • DB API for shell scripting (any shell)

    - by foampile
    I am faced with some legacy shell scripts that run batch data processing jobs in Oracle using SQL+. For the most part, the data tier does not have to communicate back to the script with retrieved data to be passed for shell-level processing but in a few cases it does. The problem is, SQL+ is really meant to be an end user app and not an API that can communicate with other clients programmaticaly. That is why people have invented APIs such as DBD::DBI for Perl, JDBC for Java, ODBC etc. The way it is done is they invoke SQL+ and then parse the output, which is clearly designed for human eye consumption, using tools like sed and awk. The whole thing is at best a hack and very prone to bugs. Since this client is rather conservative with their technology, they don't want to scale their scripts up to Perl or Python where there are data access APIs. So I am wondering whether there are similar APIs for shell, e.g. K or bash. What I would like is if an API would return data in a 2-dimensional array or strings (for the lack of type setting) so that I can just read DB data like that. The way they do it now is akin to parsing regular web page HTML to get a single stock quote rather than cleanly calling a web service and be done with it. Anybody know of a product I can use? Thanks

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  • org.apache.sling.scripting.jsp.jasper.JasperException: Unable to load tag handler class [migrated]

    - by Babak Behzadi
    I'm developing an Apache Sling WCMS and using java tag libs to rendering some data. I defined a jsp tag lib with following descriptor and handler class: TLD file contains: <?xml version="1.0" encoding="UTF-8"?> <taglib version="2.1" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"> <tlib-version>1.0</tlib-version> <short-name>taglibdescriptor</short-name> <uri>http://bob/taglibs</uri> <tag> <name>testTag</name> <body-content>tagdependent</body-content> <tag-class>org.bob.taglibs.test.TestTagHandler</tag-class> </tag> </taglib> Tag handler class: package org.bob.taglibs.test; import javax.servlet.jsp.tagext.TagSupport; public class TestTagHandler extends TagSupport{ @Override public int doStartTag(){ try { pageContext.getOut().print("<h1>Helloooooooo</h1>"); } catch(Exception e) { return SKIP_BODY; } return EVAL_BODY_INCLUDE; } } I packaged the tag lib as BobTagLib.jar and deployed it as a bundle using Sling Web Console. I used this tag lib in a jsp page deployed in my Sling repository: index.jsp: <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="bob" uri="http://bob/taglibs" %> <html> <head><title>Simple jsp page</title></head> <body> <bob:testTag/> </body> </html> Calling the page cause the following exception: org.apache.sling.scripting.jsp.jasper.JasperException: /apps/TagTest/index.jsp(7,5) Unable to load tag handler class "org.bob.taglibs.test.TestTagHandler" for tag "bob:testTag" ... Can any one get me a solution? In advance, any help is apreciated.

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  • Improving grepping over a huge file performance

    - by rogerio_marcio
    I have FILE_A which has over 300K lines and FILE_B which has over 30M lines. I created a bash script that greps each line in FILE_A over in FILE_B and writes the result of the grep to a new file. This whole process is taking over 5+ hours. I'm looking for suggestions on whether you see any way of improving the performance of my script. I'm using grep -F -m 1 as the grep command. FILE_A looks like this: 123456789 123455321 and FILE_B is like this: 123456789,123456789,730025400149993, 123455321,123455321,730025400126097, So with bash I have a while loop that picks the next line in FILE_A and greps it over in FILE_B. When the pattern is found in FILE_B i write it to result.txt. while read -r line; do grep -F -m1 $line 30MFile done < 300KFile Thanks a lot in advance for your help.

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  • How to get current gnome keyboad layout from terminal

    - by ftiaronsem
    For usage in a bash script, I need to get the gnome keyboard layout the user is currently using. For example if the user sets its keyboard layout to en-us , I need a bash command that prints me this. How can I get that information? Update: setxkbmap -query is unfortunatelly not working. Below is the ouput with the en (first command) and the de (second command) layout activated. Switching keyboard layout seems to be have some relation with gnome session configuration setxkbmap -query rules: evdev model: pc105 layout: us,de variant: , options: terminate:ctrl_alt_bksp,lv3:ralt_switch,grp:alts_toggle setxkbmap -query rules: evdev model: pc105 layout: us,de variant: , options: terminate:ctrl_alt_bksp,lv3:ralt_switch,grp:alts_toggle

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  • Setup CRON weekly backup

    - by sadmicrowave
    I want to make a backup of my /var/lib/mysql and /var/www folders and save them as tar.gz files to my mounted network file server (uslons001). Here is my bash file located in: /etc/cron.weekly/mysqlbackup.sh #!/bin/bash mkdir ~/uslons001/`date +%d%m%y` tar -czf ~/uslons001/`date +%d%m%y`/mysql.tar.gz /var/lib/mysql tar -czf ~/uslons001/`date +%d%m%y`/www.tar.gz /var/www tar -czf ~/uslons001/`date +%d%m%y`.tar.gz ~/uslons001/`date +%d%m%y` echo Backup Completed `date` >> ~/backuplog Which works PERFECTLY fine when I execute it in a cmd shell but when I setup the cron job it never runs, so I'm not setting the cron job up properly. My cron job looks like this. 30 7 * * fri /etc/cron.weekly/mysqlbackup.sh Which should execute at 7:30AM every Friday... What am I doing wrong? UPDATE1 - change the cron job line to the following: 44 8 * * 5 /etc/cron.weekly/mysqlbackup.sh with still no luck...is there a cron error log file that I can read to help pin point where the problem is?

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  • /etc/profile not being sourced

    - by Marc
    For 11.04, I did a fresh install of my system. Part of that install was to install rvm, which sticks a rvm.sh in /etc/profile.d/. This doesn't work as /etc/profile (which loads each +r in /etc/profile.d/*.sh) is not being loaded. According to the documentation, the profile is only sourced if bash is run in login. To verify this, I invoked bash --login, after which rvm was available. This has worked for me in previous versions of Ubuntu without any configuration. That is, a fresh install of 10.10 will correctly source profile/.d. My question is: is there anything I'm doing wrong, or are there some new assumptions being made in Natty that have broken this? My current workaround is to source /etc/profile in ~/.bashrc (which is awful as profile is meant to load before bashrc's, but does the trick).

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  • Any way to list similar commands?

    - by Septagram
    When you write the command name wrong, bash often does this: septi@norbert:~$ good No command 'good' found, did you mean: Command 'gold' from package 'binutils' (main) Command 'gmod' from package 'gmod' (universe) Command 'goo' from package 'goo' (universe) Command 'god' from package 'god' (universe) Command 'geod' from package 'proj-bin' (universe) Command 'gord' from package 'scotch' (universe) good: command not found Or sometimes it does this: septi@norbert:~$ nftp No command 'nftp' found, but there are 23 similar ones nftp: command not found Is there any way to ask bash to show these 23 similar commands for me? And, is there a way to show similar commands, including those that aren't yet installed, instead of running the application, ftp for example?

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  • How can a script detect if the user is idle

    - by josinalvo
    I want to check, inside a bash script (*), how much time the user of a X session has been idle The user himself does not have to be using bash, but just X. If the user just moved the mouse, for example, a good answer would be "idle for 0 seconds". If he has not touched the computer in 5 minutes, a good answer would be "idle for 300 seconds" The reason to not use xautolock straight away is to be able to implement some complex behavior. For example, if the user is idle for 10 minutes, try to suspend, if he is idle for more 5 minutes, shutoff (I know it sounds odd, but suspend does not always work here ...) (*)or could be another language.

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  • Help writing server script to ban IP's from a list

    - by Chev_603
    I have a VPS that I use as an openvpn and web server. For some reason, my apache log files are filled with thousands of these hack attempts: "POST /xmlrpc.php HTTP/1.0" 404 395 These attack attempts fill up 90% of my logs. I think it's a WordPress vulnerability they're looking for. Obviously they are not successful (I don't even have Wordpress on my server), but it's annoying and probably resource consuming as well. I am trying to write a bash script that will do the following: Search the apache logs and grab the offending IP's (even if they try it once), Sort them into a list with each unique IP on a seperate line, And then block them using the IP table rules. I am a bash newb, and so far my script does everything except Step 3. I can manually block the IP's, but that's tedious and besides, this is Linux and it's perfectly capable of doing it for me. I also want the script to be customizable so that I (or anyone else who wants to use it) can change the variables to suit whatever situation I/they may deal with in the future. Here is the script so far: #!/bin/bash ##IP LIST GENERATOR ##Author Chev Young ##Script to search Apache logs and list IP's based on custom filters ## ##Define our variables: DIRECT=~/Script ##Location of script&where to put results/temp files LOGFILE=/var/log/apache2/access.log ## Logfile to search for offenders TEMPLIST=xml_temp ## Temporary file name IP_LIST=ipstoban ## Name of results file FILTER1=xmlrpc ## What are we looking for? (Requests we want to ban) cd $DIRECT if [ ! -f $TEMPLIST ];then touch $TEMPLIST ##Create temp file fi cat $LOGFILE | grep $FILTER1 >> $DIRECT/$TEMPLIST ## Only interested in the IP's, so: sed -e 's/\([0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+\).*$/\1/' -e t -e d $DIRECT/$TEMPLIST | sort | uniq > $DIRECT/$IP_LIST rm $TEMPLIST ## Clean temp file echo "Done. Results located at $DIRECT/$IP_LIST" So I need help with the next part of the script, which should ban the IP's (incoming and perhaps outgoing too) from the resulting $IP_LIST file. I don't care if it utilizes UFW or IPTables directly, as long as it bans the IP's. I'd probably run it as a cron task. What I'm having trouble with is understanding how to use line of the result file as a seperate variable to do something like: ufw deny $IP1 $IP2 $IP3, ect Any ideas? Thanks.

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  • What's the difference between set, export and env and when should I use each?

    - by Oli
    Every so often I'll bash out a bash script and it strikes me there are a few ways of setting a variable: key=value env key=value export key=value When you're inside a script or a single command (for instance, I'll often chain a variable with a Wine launcher to set the right Wine prefix) these seem to be completely interchangeable but surely that can't be the case. What's the difference between these three methods and can you give me an example of when I would specifically want to use each one? Definitely related to What is the difference between `VAR=...` and `export VAR=...`? but I want to know how env fits into this too, and some examples showing the benefits of each would be nice too :)

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  • sed problem ....

    - by moata_u
    hello there ... am facing problem in sed command , i was trying write a bash script that do the following : 1. search for the line that contain :@ , 2.then save the line that contained :@ and replace it with new line ....as following : ! /bin/bash echo "Please enter the ip address of you file" read ipnumber find=grep ':@' application.properties # find the line input="connection.url=jdbc\racle\:thin\:@$ipnumber\:1521\:billz" # preparing new line echo sed "s/'${find}'/'${input}'/g" application.properties # replace old with new line **Problem is nothing happen !!!! * I already tried to use "${find}" instead of '${find}'

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  • can't control pianobar after using echo

    - by Ubuntuusr22222
    I have a script that starts pianobar (pandora player) and autoloads into tty2 after booting. I'm running Ubuntu Precise 12.04. it's a pretty simple script: #!bin/bash sleep 5 echo "2" | pianobar This works, it selects station 2 and begins playing... but when I try to type in commands it doesn't work (like pushing "p" for pause.) It'll show the letter for a second, then hide it. If I try to exit with ctrl+z it just sits there and I can't use it at all. If I run this it works fine but doesn't auto-select the second station: #!bin/bash sleep 5 pianobar Is there anyway to write this so it will automatically input "2" and then allow me to control from there? Or am I stuck with having to select 2 every time I boot up?

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  • Run two shell file with thread

    - by user1149157
    How i can run two file shell in parallel and do not shared the same jvm. may be i use thread but how i run two file shell bu two thread ? File 1: #!/bin/bash # # Script for running several experimentations one the same JVM # Usage : TRACE_DIR NB_EXPE Factories... # param="parameter1" another="parameter2" for ((i = 10; i >= 0; i -= 1)) do echo "run my file with param another " done File 2 : #!/bin/bash # # Script for running several experimentations one the same JVM # Usage : TRACE_DIR NB_EXPE Factories... # a="101" b="400" c="500" echo "run my programme with a b c "

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  • What is the best scripting language to embed in a C# desktop application.

    - by Ewan Makepeace
    We are writing a complex rich desktop application and need to offer flexibility in reporting formats so we thought we would just expose our object model to a scripting langauge. Time was when that meant VBA (which is still an option), but the managed code derivative VSTA (I think) seems to have withered on the vine. What is now the best choice for an embedded scripting language on Windows .NET?

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  • How to auto-restart a python script on fail?

    - by norm
    This post describes how to keep a child process alive in a BASH script: http://stackoverflow.com/questions/696839/how-do-i-write-a-bash-script-to-restart-a-process-if-it-dies This worked great for calling another BASH script. However, I tried executing something similar where the child process is a Python script: #!/bin/bash PYTHON=/usr/bin/python2.6 function myprocess { $PYTHON daemon.py start } NOW=$(date +"%b-%d-%y") until myprocess; do echo "$NOW Prog crashed. Restarting..." >> error.txt sleep 1 done Now the behaviour is completely different. It seems the python script is no longer a child of of the bash script but seems to have 'taken over' the BASH scripts PID - so there is no longer a BASH wrapper round the called script...why?

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