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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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  • Where does $PATH get set in OS X 10.6 Snow Leopard?

    - by misbehavens
    I type echo $PATH on the command line and get /opt/local/bin:/opt/local/sbin:/Users/andrew/bin:/usr/local/bin:/usr/local/mysql/bin:/usr/local/pear/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/opt/local/bin:/usr/local/git/bin I'm wondering where this is getting set since my .bash_login file is empty. I'm particularly concerned that, after installing MacPorts, it installed a bunch of junk in /opt. I don't think that directory even exists in a normal Mac OS X install. Update: Thanks to jtimberman for correcting my echo $PATH statement

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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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  • 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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  • bMac OS X keyboard shortcuts for terminal

    - by user10826
    After googling for some Mac OS X terminal shortcuts, I wanted to find how can I go back characters on a line on the terminal or words or similar. I found ALT + B but it does not work. Do you know some other shortcuts, or how can I customize them or links to cheat sheets?

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  • Shell script to control user initiated processes

    - by Gnanam
    Hi, I'm not a shell script expert. I'm looking for a shell script which checks for maximum number of Java processes (MyJavaStandalone) running in the system before starting/executing the current Java process. Example: Script: /home/myfolder/script.sh script.sh contains /usr/java/jdk1.6.0/bin/java MyJavaStandalone >> $DATE.log & Here, before executing "MyJavaStandalone", if there are already 10 processes running, then this current process should not be started.

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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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  • 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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  • 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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  • sox mix nested scripts on amazon ec2 rhel linux

    - by Ray
    I'm trying to use "sox" to mix some audio files. The command works great on my Mac terminal sox -m audio.wav "| sox upload.wav -p trim 2 1 pad 6" final.wav This mixes (not concatenate) audio.wav and a section of upload.wav from the 2nd second to the 3rd second and adds 6 seconds of padding in the front, and outputs to final.wav Now the problem is, the SAME EXACT command does NOT work my Amazon EC2 RHEL box. (sox is installed correctly). I get the following error sox soxio: Can't open input file `| sox upload.wav -p trim 2 2 pad 6': No such file or directory For some reason RedHat doesn't like the double quotes. Even though it is documented to be used this way. Thanks for your help!

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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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  • Grep the whole body of a function

    - by dotancohen
    Supposing I know that someFile.php contains the definition for someFunction(). How would I go about displaying the whole body of the function in stdout? If I know that the body is 10 lines long then I would use cat someFile.php | grep -A 10 "function someFunction" [1] but in reality the function could be any arbitrary length. I figured that with sed I could use Vimesque commands such as /function someFunction<Return>/{<Return>% [2] but I can't figure out exactly how to format it. Ideally, the PHPDoc before the function would be output along with the function. Any help or links to the appropriate fine manual would be appreciated. Thanks! [1] I know that the cat is redundant, but I find this format easier to read. [2] Find the function definition, go to the opening brace, go to the close brace

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  • Detect fails in setup script

    - by Lai Yu-Hsuan
    I wrote a setup script to install my prefered programs and settings after I got a new server. apt-get install git git clone http://[email protected] .vim ln -s .vimrc .vim/vimrc ... But if something wrong happens during setup, how can I interrupt the setup script, and log the error(s)? For example, if github server is down, it's obviously useless to create a symbolic link to non-existed vimrc. (or you have a better approach to initialize a server?)

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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 switch to another window when Ctrl + B not works for tmux?

    - by hugemeow
    as we all know tmux is quite nice tool, but there is some scenerios that Ctrl + B cannot be used for example: i sshd to server A, and now i connect to A's tmux pty, so Ctrl + B is captured by server A. then i ssh to server B from server A, and there is also tmux running on Server B, this time, Ctrl + B only works for server A, and cannot be used by server B, so if i want to switch windows for server B, what should i do then?

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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 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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  • How to create limited user accounts in Linux

    - by James Willson
    I want to create a user account for each of the key programs installed on my debian server. For example, for the following programs: Tomcat Nginx Supervisor PostgreSQL This seems to be recommended based on my reading online. However, I want to restrict these user accounts as much as possible, so that they dont have a shell login, dont have access to the other programs and are as limited as possible but still functional. Would anyone mind telling me how this could be achieved? My reading so far suggests this: echo "/usr/sbin/nologin" /etc/shells useradd -s /usr/sbin/nologin tomcat But I think there may be a more complete way of doing it. EDIT: I'm using debian squeeze

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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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  • 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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