Bash is a free shell for Unix-like operating systems from the GNU Project.

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gfortran not working on my Mac OS X

I tried running gfortran on my Mac OS X, but it wouldn't work. When typing gfortran in the terminal I got the error -bash: gfortran: command not found. So I thought maybe my installation was not ...
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359 views

Awk script to run a command based on condition using 'if'

I have a piece of code here that basically takes a file called 'srcip' (which is just a list of IP addresses) and compares it to my '~/db' file which is just a tab delimited IP HOSTNAME database of ...
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173 views

Creating a macro with .sh

so I would like to write a script that will be used in the following way. ./MakeMacro 1 The basic form of the script looks like this: #!/bin/sh ...
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67 views

Open an ssh session and pass a password on login

In the place where I live the internet connection basically works as follows: You have to configure your network interface to use a unique private ip and the organizations servers as gateway, which ...
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23 views

List folders by modification time of children in linux?

I have a folder, we'll call it /scripts/, that contains subfolders for a number of different scripts (let's say /scripts/file_export, /scripts/record_ingest, /scripts/stats). Inside these folders are ...
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30 views

Return / transform then return pattern with nulls

I'm using grep/sed to parse a large binary file full of nulls for some specific data. This is in a windows environment using gnuwin32. Assuming I had some to return some data from a binary file that ...
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2k views

unable to execute: Too many levels of symbolic links

By mistake, I executed these commands : sudo ln -sf bash /bin/sh sudo ln -sf bash /bin/bash When I rebooted the Linux server in recovery mode I got this message: init : Failed to spawn friendly-...
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15 views

Bash expansion to list from a directory

I tend to work on multiple projects, all stored inside my home (~) directory inside a directory called web. At one point all my projects were inside a single directory inside this; so to move from ...
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176 views

word boundary in a awk command not working when printing a range of lines

I am attempting to parse samba .conf file for a specific share section... [CMI] oplocks = no wide links = no writeable = yes delete readonly = yes path = /LOCALSITE/CMI ...
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57 views

Add option to GDM 3.x that does not have gui

You know how when you login with GDM, and you can select a variety of desktop environments? For instance, mine has Cinnamon, GNOME 3, xfce. How could I add an option that logs you in without a gui? (...
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486 views

Temporarily switch Java version in bash script- Ubuntu Linux

I'm using the Java keytool as part of a larger bash script. I need to pass in a password to create a keystore, so used the command keytool -importkeystore -deststorepass:file ${somefile}. This -...
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51 views

Setting Terminal tab to current directory and program running

How can I make the terminal tab display <name of process running (vim, bash, ruby, etc)> - <parent directory/current directory>?
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100 views

Using GNU screen to create a split screen environment from command line

Could someone please point me towards the syntax for using GNU screen from the command line. On a previous cluster, I managed to create a bash script that would create X number of tiled shells, each ...
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55 views

bash auto-complete separates strings

Let's say I'd like to cd to the directory containing all albums by the artist "The Ghost of a Saber Tooth Tiger" so I start typing cd ~/Music/The\ Ghost and hit [TAB] [TAB]. At this point bash ...
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126 views

Script for finding new files in a directory, and execute a command

I have a directory with several, or even hundreds of xml files in it. I want to execute a script when a new file is found. the only MAJOR problem is I can't use inotifywait or something like that. Due ...
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2k views

Remove grep's line number output in Redhat 5.9

I havent used RH 5.9 until now. I started with 6 but we have some 5.9 servers. The syntax with 5.9 is a bit different with some things. grep for example will output a number line before the actual ...
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116 views

How do I make sure that bash (not tcsh) is used in Linux?

I have a bash script where I use ssh to connect to another server and run some commands there. I found some sites that the error (Warning: no access to tty (Bad file descriptor). Thus no job control ...
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366 views

How do I build a script shell to send cmd via telnet and log only results?

I would like to make a shell script that can call a range of IPs via telnet, to send a command, and write the result to a file.
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352 views

ssh to production to www-data user

I build an automation for deploys, that we connect to our productions servers and then perform a git pull in the project. The project is owned by "www-data" so I need to to --> ssh www-data@10.10.10....
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389 views

Drush commands not found when called from a bash script

Relevant system background: I'm using MAMP on OSX. Output of which php is /Applications/MAMP/bin/php/php5.3.14/bin/php Output of which drush is /Applications/MAMP/bin/php/php5.3.14/bin/drush Output ...
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110 views

Memory usage of a process in a shell script

I want to find out the memory usage of a process in a shell script.I tried to use this piece of code : while[process] do if [ -e /proc/$pidno/statm ]; then m=`awk '{OFS="\t";print $1,$2,$3,$6}...
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53 views

How to verifying variables correctly in Bash?

I have the following code: #!/bin/bash FILES=known/* arp-scan -l > temp_scan.log cat temp_scan.log | while read line do for f in $FILES do echo "--------------------...
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74 views

searching large number of possible file names in large directory tree

I need to search a large directory tree for a large number of possible file names, i.e. I have an input file with a long list of strings that I need to find in the tree (or as below: print all those ...
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377 views

LINUX Bash - Recursively Create Intermediary Directories and Move Files of Type Into New Directories

I've used StackExchange before and lurked on SuperUser but first time posting. Here's what I'm trying to do. (Pseudo) For Each DIR containing $file *.Item Mkdir ./dir1/dir2 Mv $file ./dir1/...
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61 views

how to detect availability of GUI

For Linux: I have a text mode installation (bash) script and a graphical mode setup program (a Free Pascal binary). I'd like to run the graphical setup when a GUI is available. How do I detect which ...
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44 views

in bash, how to load and execute an external bash script from a server, like github?

I'm thinking maybe I could have my ~/.bashrc (or other such customization bash file) live on my github and load it from whatever remote shell I log into with a command. Is that possible, and if so how?...
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26 views

How can I prnt scrn to USB drive in bash linux

During early stages of installing linux, when in the bash terminal is it possible to screen capture and save the output to a mounted USB drive?
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38 views

Is there any difference in the view of process & sub process between command “/bin/sh -c ls /” and sh temp.sh(containing one line ls / only)?

What is the difference between the above ways of executing command and the code below? #include int main ( ) { int return_value; return_value = system ( "ls /" ); return return_value; }
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459 views

How do I capture what I see in tail?

Tail seems to parse TTY commands. When commands use ^M to erase the line & redraw the line in stdout, for example an animated ASCII progress bar. When I tail a file where this is happening, I see ...
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467 views

insert complex line in html file from the command line/bash script

I use a bash script to add a javascript file to a directory, but after that I need to insert into the index.html this line at between line 30 and 31. <script type="text/javascript\" src="./js/...
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118 views

Print Windows mapping of root path in MSYS Bash

In MSYS Bash I get: $ cd ~ $ pwd /c/Users/antonio but: $ cd / $ pwd / Can I get the full Windows absolute path from Bash?
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404 views

How to fg a process suspended before starting tmux inside the new tmux session?

How to 1. suspend a process with ^Z, 2. start tmux and 3. fg (or bg) the suspended process? $ find / [.....] ^Z [1]+ Stopped sleep 10 $ tmux $ fg -bash: fg: current: no such job ...
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481 views

tar -czvf with no output file

Say you run tar -czvf some_folder_here and don't actually specify an output file, like tar -czvf some_output_file.tar some_folder_here. Where does the file go? I just ran this by accident, and the ...
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594 views

grep: Invalid back reference for date expression in tcsh

I googled for the following error, and didn't get any great explanations as to what was going on with grep under tcsh. (Yes, that date expression exists in the log files). $ grep '2014-07-21' *.log ...
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128 views

stop all child processes when 1 of then returned exit code 1

I have 2 or more build processes to run in background. I want to stop all the build processes if one of them exit with code other than 0. ./build-1.sh & ./build-2.sh & ./build-3.sh & wait ...
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203 views

Bash prompt command being overwritten when invoking history/deleting command

My Bash prompt clears itself when deleting the text after it or going too far in the history. When logging in, the prompt looks normal. There are white brackets around a colored username and then a ...
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403 views

Bash files open terminal when opened

This seems like something simple to do but for the life of me I cannot figure out how to do it. I would like all bash (*.sh, *.bash) files to open with a terminal to show their output in.
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150 views

Bash doesn't source file unless manually started

bash won't source files from an login terminal unless I manually run bash from a terminal, I have bash (and not sh or dash). When I source a file, it returs errors (like "syntax error near unexpected "...
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573 views

Unable to start bash script with shell_exec

I've been googling and trying to solve this problem with my php script for a few days now and I'm hoping someone here can see the problem I'm missing in getting my php script to kick off my bash ...
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155 views

How can I delete the oldest directory in a directory?

I am writing a backup programm, and I need to execute a bash command to delete the oldest directory in a specific directory. I have found this command to print the oldest directory: find -type f -...
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1k views

Command Line: Browse to a network path that has spaces and a single quote

I am trying to browse to a network path in dos that has both spaces and a single quote. When I do: net use "\\server\path's name\folder\" I get an error message that error 53 has occurred. Any ...
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81 views

.bashrc used in gnome not just terminal

I've recently started using the Anaconda Python distribution for software development and I want it to be the default Python distribution when I run something in the terminal. In order to do this, I'...
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628 views

How can I set the terminal encoding when running a crontab job?

I have a crontab job which executes a Ruby script on Arch Linux. It works basically, but when I call "googlecl" to post to my blog, it always shows a "safeDecodeError" exception (eg.: googlecl....
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96 views

Trace web redirection in bash script

I want to make a script to download the image at best resolution (not the preview image) from a deviantART link, as if I clicked the "Download" button. However, it seems that deviantART redirect the ...
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124 views

running sac2xy returns sac2xy: cannot execute binary file on osx 10.9

I have a Python script for plotting data which uses sac2xy, but it gives an error when running sac2xy: sh: sac2xy: command not found the relevant part of code is : os.system("sac ./tmp/sac.m") os....
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17 views

Move child folders into a different folder

I am new to UNIX, and I am trying to write a shell script that would move all folders that are older than a day in log archive directory into another folder. Below is the command I am using for doing ...
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563 views

WGET/cron downloading webcamera file

our new town doctor put a web camera to his waiting room for people to see how much crowded it is. As my mom and grandparents go to this doctor, I wanted to download the files periodically and if they ...
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33 views

Removing files and directories that already exist in other directories

I need a help writing a script. So basically I have directories named by current date, like 01-06-2014 02-06-2014 and so on each of these directories has files and subdirectories inside. But sometimes ...
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145 views

How can I install my script into the user's $HOME/.bin (or $HOME/bin) directory and make sure that is in their PATH?

Edit: places where I said $HOME/.bin I should have written $HOME/bin or any equivalent is fine. So I have a bash script which I am distributing as a client for my API. Current version installs like ...
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398 views

Associate MIME Type with Shell Script?

I want to associate any file type with a .abc extension with the following shell script: #!/bin/bash echo arg 1 is: $1 The .abc type files just have text, but I want to ensure that opening a file ...