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

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Getting a batch file to run windows 7 psr tool

I'm trying to run the Windows 7 problem steps recorder tool on a remote computer using screenconnect. Screenconnect allows you to quick launch files remotely, so I'm using batch files. The goal is to ...
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38 views

Connecting to ssh and using screen not working properly

I used once ssh -t <login@server> screen -R to connect to a server and everything worked fine. I used the terminal in the server to execute an script and then detach the screen. I came back ...
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61 views

Autoexport bash internal variables

I need to access to some bash internal variables (BASH_LINENO, BASH_SOURCE) from a command invoked by a shell script. The only possible interface between my command and the script are environment ...
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104 views

Bash History Under OS X (Mavericks)

Why does my bash history under OS X never seem to persist for more than an hour or two (or a day, at most)?
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78 views

GZIP corruption with big files?

I came across a weird behavior: gzip v1.5 - Fedora r18 A file -rwxrwxrwx. 1 root root 3892576256 Apr 28 11:29 vm.qcow2 Initial checksum: md5sum vm.qow2 954c5461468d68daed3cef6a7b66bd8f vm.qcow2 ...
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89 views

Specific command not recognized in only one shell

I'm running Windows7 as OS as my development machine. It has various Shells: cmd Powershell Mysysgit GNU Bash <-- this is the one not working PuppetLabs Shell Nodejs Shell PHPStorm built in ...
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31 views

Look for app/cache and app/logs directory and apply rules in /var/www/html

I need some help creating some bash script that help me on my development server by running this commands: HTTPDUSER=`ps aux | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | ...
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15 views

Run a service action with a file from a shell script

I use CloudApp and it has installed a handy service called “Upload to CloudApp”. I'm writing a build script that I want to hook into this service. Every time it is run I want it to upload the file ...
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224 views

FFmpeg/Avconv: Scaling Filter “Error when evaluating the expression”

I'm trying to scale a video with FFmpeg with the following command: ffmpeg -i input.jpg -vf scale="'if(gt(a,4/3),320,-1)':'if(gt(a,4/3),-1,240)'" output_320x240_boxed.png This is taken verbatim ...
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130 views

Unable to run tmux on OS X

So I got brew on my mac and I had tmux installed and running just fine. Then after I refreshed my system every time I try to run tmux i get this error: "-bash: tmux: command not found" So since I'm ...
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13 views

getting disk identifier from the disk name

Is there a way to retrieve the disk identifier from the disk name? For example I have a disk partition /Volumes/Data and I would like to store the disk identifier in a variable. Any help?
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152 views

Script to open mutliple terminals with multiple tabs each, move and resize these and execute commands

So I am trying to make a bashscript, which does the above mentioned. Background is that I have to keep an eye on lots of logs, and theres have to have opened many console side-by-side. E.g. one ...
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231 views

Kali Linux: Renaming files in bin

I'm just curious. I want to rename files in /bin such as - ls --> als //after I change it, the ls command no longer works and I have to use als instead - adduser --> aadduser - chmod --> achmod so I ...
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44 views

redirect tar notices when used with pipe

I have a remote backup cron script that contains the following line: cat ${list} | xargs tar Jlcf - | ssh -i /root/.ssh/backup \ seron@dummy.net "backup_${DATE}.txz" It gives tar a list of ...
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67 views

how to list all CNAMEs of the current server in the bash prompt?

I have servers with a generic names (e.g. eu1.example.com) which has a set of useful CNAME (e.g. mail.example.com, rocket.example.com). How can I list the CNAME in a bash prompt, to go from ...
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42 views

Running fsck with other program and UDEV in bash

After much trouble I got the UDEV rule to run after inserting an USB. It runs a program to convert the names of pictures and movies. I use {} & to run the program in the background: The only thing ...
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939 views

setting https_proxy environment variable in a secure way

The following is the standard way suggested to set the environment variable for the https_proxy: export https_proxy=<username>:<password>@<proxy>:<port> But it clearly ...
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49 views

Automate whois lookup with Automator

I would like to automate a whois query script using automator. And as I have read from a past Q&A, I've already done this: Get Specified Text xxx.xxx.xxx.xxx Run Shell Script for x in "$@"; ...
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50 views

Vagrantfile - is rvm in ~/.rvm/scripts/rvm or ~/.rvm/bin/rvm?

I'm still learning my way around some of the more hidden files in terminal and I was trying to setup a Vagrant box with rails via shell script provisioning, with some help from these links: ...
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43 views

Copying .bashrc and .profile does not change anything?

I have a root bash profile setup which has autocomplete and all the nice colours, but there is nothing setup for my actual user (non root). So I decided to copy the files .bashrc and .profile from ...
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83 views

Save rows effected from mysql delete statement in bash

I am trying to create a bash script that will connect to my database and purge older records, I would like to keep a record of the number of rows are deleted in a file (lets call it rowseffected.log). ...
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66 views

Capture user input to “kinit” - Works on OS X, but not Linux via “script”

I have a script that was written on OS X and utilizes the "script" command. With the -k flag it will log keys sent to the program, but that option is not available in the linux version of "script". My ...
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229 views

How to check via bash if your connection is wireless N/G/… on Linux?

iwlist scan shows me the available wireless connections. I can see Frequency:2.412 GHz for the channel I'm connected to. This article shows that a frequency of 2.412 GHz means that you are using ...
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39 views

open a new screen in linux, no access to perl local library

I added my perl local library to my shell startup script (.bashrc) and when I start a terminal in linux: $ echo $PERL5LIB /home/perl5/lib/perl5:/usr/share/vcftools/perl BUT when I open a new ...
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119 views

Mac OS X Terminal Error: undefined method `grep'

Every time I enter a command, or even just hit enter, in Terminal I get this line below the output: -e:1:in `<main>': undefined method `grep' for #<String:0x007feea31354b8> ...
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49 views

automatically prepend variable in for loop without having to put variable on each line

Is there a way to automatically have the $i variable prepended to the beginning of the command without having to specify it each time? Here is my current script. #!/bin/bash for i in "command ...
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114 views

Error uncompressing file when piping curl to gunzip

I need to download a gzipped xml feed to parse in my Ruby app. It may well be quite large, 30Mb compressed, 300Mb uncompressed. So I do this: curl -s http://example.com/file.xml.gz | gunzip and read ...
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90 views

OS X: invalid option -o

When I open terminal I got the following message invalid option: -o. I cannot use /bin/bash --login because I got the same result. I think that terminal try to execute bash login which can't be ...
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93 views

Bash, transforming a string list of words in a array

Sorry if I post a question on a topic discussed dozens of times. I'm trying to work on an element of an associative array and assign it to an array. I know that in bash associative arrays are ...
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59 views

Bash MinGW ignoring Ctrl+O key combination

In Bash MinGW on Windows 7, I would like to use Ctrl+O to perform a history search backward. However, I can't get this work -- i.e., this line in my ~/.inputrc does nothing (although it does work on ...
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130 views

Correct way of setting Ruby2.1 as the go-to application when it referenced to/called via shell?

I have installed Ruby 2.1 on my headless Debian server (7.4) by downloading the source from https://www.ruby-lang.org/en/downloads/ and then running the routine of ./configure make make install ...
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71 views

Ubuntu: `env -i bash --norc`, but include essential variables such as HOME, DISPLAY? (where are these set?)

Is there an easy way to isolate a session of bash so that only essential variables (HOME, USER, DISPLAY, etc.) are preserved? (essential in that many programs fail if HOME, DISPLAY, TERM, SHELL, etc. ...
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197 views

Terminal: Multi-column/Table 'ls'

When running a fullscreen terminal, ls doesn't adapt to the current terminal width and supply me with multiple column-listings of items, it always provide a single column of directory items. Even ...
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64 views

Why does read's timeout break my console?

I have a script that is causing an issue, I've boiled it down to this; #/bin/bash read -t 1 -p 'Wanna continue?' less +F readTimeout.sh echo 'Wont get printed' The original script operated by ...
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36 views

Set X11 to open scripts by default

I am really new to Mac as I don't own one. I have created a ruby script on windows that I like to open an a Mac. I would like to set X11 as default "program" to open scripts instead of the one ...
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53 views

Implement Roll-backing in bash script

I have implemented an Ubuntu package in which bash scripts are using. I followed these for making packages in Ubuntu. ...
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226 views

OSX : Find all zip and rar in a selected folder then unzip and unrar

I am in the process of cleaning a huge library of mangas (mostly -but not only- image files ). Each manga has a main folder containing the different volumes, sometimes in .zip, sometimes in .rar. ...
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90 views

Change all commands in custom application menu on Debian

so what I have is applications that's supposed to run as root, what I want to do is to add a sudo in the beginning of each command with a single bash script, so I can run these programs directly from ...
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246 views

Bash 4.2 on Windows without virtual machine?

I'm looking for the way to run bash 4.2 on Windows without a virtual machine. I've tried with CygWin, but the latest version that you can install is bash 4.1, and I didn't find a way to install bash ...
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407 views

Automatically reconnect Openswan/IPSec VPN and disallow intermittent traffic?

I am trying to connect two Debian machines running an Openswan/IPSec tunnel. Also, I want to disallow any traffic when the tunnel goes down. For that purpose I wrote a script the fiddles with routes ...
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85 views

Special and diacritic charactres using less, cat and other linux tools

I am using GNU bash, Version 4.1.10(4)-release (i686-pc-cygwin) and set up my .inputrc to allow for special characters and German umlauts etc.: set meta-flag on set convert-meta off set output-meta ...
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149 views

How to easily execute last output line in bash?

You probably encuntered the case where a package was not installed and the system was recommending you to install it using apt-get install mypackage. I am looking for a quick keyboard shortcut for ...
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80 views

Installing jdk 1.7.0 java -version not working

I have installed java jdk, following the steps as described here but the problem is when i do which jav it gives me the output /usr/bin/java but when i do java -version it says bash: ...
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53 views

Take back Ctrl-/ from Debian console configuration

My Debian Testing console is stealing my Ctrl-/ and using it as Backspace; Ctrl-/ is the single key-press Undo in bash and emacs. After some research, it looks like the Ctrl-/ -> Backspace mapping ...
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412 views

find and replace in PDF using sed and pdftk

I am doing a mass find and replace using sed and pdftk to find and replace a word in PDF files. When I run the following command, sed -e "s/word1/word2/g" test.pdf I get the following error, sed: ...
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296 views

Corrupted broadcast message when system is going to halt in Debian

I have two debian squeezy systems. On first when I've do shutdown or reboot I see correct message, for example: Broadcast message from root@example.com (pts/0) (Fri Jul 19 23:43:32 2013): The system ...
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25 views

Run screen splitted and specify commands for each windows?

Ubuntu 12.04, I would like to run gnu-screen already splitted in two regions and with certain commands in it, I have found that in new version of screen there are -Q argument, but I still dont get how ...
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77 views

Getting rid of “bash.exe” - from my startup

Soluto reports that bash.exe is taking up 40 seconds of boot time, but I cannot disable it. If I search for it in msconfig, I cannot identify it. If I search for "bash.exe" I cannot identify it. If I ...
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624 views

Executing tcpdump remotely while storing packet capture locally

I have run into stumbling block while attempting to create a bash script that will write packet capture files from tcpdump onto a remote server, while displaying the output of the tcpdump command so ...
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53 views

How do I script a config file change

I'm trying to create a script to make the vi color change described here http://www.kavoir.com/2009/05/how-to-change-vim-syntax-highlighting-colors.html Trying to do it with sed but it's not working ...