A shell is software that lets users interact with the operating system, usually by typing at a command-line.

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WinRar - Custom shell commands

i'm trying to create custom commands on the context menu in windows. i found this great registry hack here: https://superuser.com/a/376879/395548 this is the code made to work for me: Windows ...
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39 views

Tar not preserving permissions on extract

I'm backing up a users folder as root using tar tar -czf /mnt/disk/cloud.tar.gz -C /home/cloud/ . In /mnt/disk I do a test tar ztvf cloud.tar.gz and it shows -rw-r--r-- cloud/cloud 14 ...
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38 views

Different globbing behavior with same shopts?

I have multiple shells (bash) open on the same machine, and in one of them, globbing seems to have stopped. ls * gives ls: *: No such file or directory, and so on. I figured that I must have set some ...
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46 views

realpath (GNU coreutils 8.22) does resolve “.” symlink regardless of “-s”

I'm trying to use realpath in a script which has to ensure that it is located under a certain (possibly symlinked) path. Also the script has to be runnable from any location, so it cannot presume that ...
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27 views

Is it possible to sed -i from a text file to another text file?

I'm coding a shell script on my Debian box and there's a line on the script that needs to delete some emails from a textfile that is full of emails, like this: sed -i ...
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109 views

error handling in case sentences [Shell Script]

I have this setup and I need when an error happened in the main script, to take this error to a $INFO_PLUGIN temp file, the problem is the script continues working after case and send also an OK ...
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22 views

Forwarding shell to servers without installing it

is there any way how to forward a shell to a server without installing it on that box? This is what I need to do: I work for company where we admin X boxes and I will probably not be allowed to ...
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24 views

Building a String of dynamic length - least consuming way?

I want to write a series of the character -, the amount equaling to 50% of the terminal window column size. I already have the column size. Let's say the terminal column size is 30. My desired end ...
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343 views

Sending Linux commands over serial connection to an Android device

I have a question about being able to send Linux commands over a serial connection to an Android device. I have heard of PuTTY and tried to use it, but I am ultimately lost with it. I was in the ...
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35 views

$(shell [foo]) in windows

I've got a makefile (a file called 'Makefile' which is run by cmake I believe), and most of the 'sample' ones I can see are just one line (and the rest appear to be stuff I don't 'yet' understand and ...
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72 views

Pre-compiled command line input in zsh

I recently set up a ubuntu 12.04 64 bit machine. I use tmux with many open windows, all of them use zsh as shell, some of them through a chroot environment that uses the same home folder of the normal ...
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238 views

Can I detect the presence of a second display in a shell script or Conky config?

I want to modify my conky placement depending on whether I'm working with my laptop in my lap (one screen) or have it at my desk attached to a larger monitor (dual display). The problem is that I ...
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276 views

Why do I sometimes get 'sh: $'\302\211 … ': command not found' in xterm/sh?

Sometimes when I simply type a valid command like 'find ...', or anything really, I get back the following, which is completely unexpected and confusing (... is command name I type): sh: ...
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28 views

Register a file specified by open

So I have this small bundle with applescript made, and it even seems to work as it should. However, it appearently doesnt open my files when it is asked to via the open utility. It works though when I ...
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51 views

Select set variable value in SSH session

I'm writing a shell script. It will run from machine A, which will SSH into machine B and prompt the user to select a build folder. It'll then copy it to machine A, but I don't know how I can have the ...
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37 views

Does this spawn multiple processes

I would like to know if this shell script line spawns multiple processes: nohup openocd -f board/stm32f4discovery.cfg >>/dev/null 2>>/dev/null & other operations here Basically, I ...
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281 views

Not able to call command from within the script

i have installed oversip & when i try to execute the command "oversip" from shell, [root@vhost1111 ~]# oversip NOTICE: <executable> OverSIP 1.3.8 starting... it gets executed. But when i ...
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322 views

run a shell script on terminal if terminal is idle for few minutes in linux

i can get terminal idle time by w command as follows $ w 14:37:58 up 2 days, 20:16, 2 users, load average: 0.12, 0.16, 0.14 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT ...
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330 views

Manually run “Run” registry entries on windows

I am developing an appliance for a company. I have to develop a custom "explorer.exe" to be run as the shell. The problem is that the current explorer does some import operations such as processing ...
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278 views

error occur when i run awk command write in .sh file and run in cygwin terminal

i have cygwin terminal for run shell script(.sh ) file...it work good..but when i add awk command in shell script and then run Error occur /usr/bin/gawk.exe: error while loading shared libraries: ...
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552 views

Ubuntu kill java program started by bash

I've got a problem with killing my Java Program on Ubuntu. I created the following init script: #!/bin/sh ### BEGIN INIT INFO # Provides: control ... # Required-Start: $remote_fs ...
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274 views

How to run a shell script on a Mac (10.7.4) to auto install updates?

Im trying to run this shell script that is supposed to do this: This script uses the softwareupdate program on OSX to automatically check for updates and install them. It also logs all updates to ...
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379 views

Applescript to shell script watch folder

I am trying to setup a watch folder so that when a file is added to a folder, I can run a shell script...for this purpose I made a simple test but cannot make it work... Here is my applescript on ...
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1k views

how to connect to secured wireless network connection in cmd in windows?

I program on C#, I don't want to use P/invoke, so I will use shell, so I need to connect to a secured wireless network connection on the CMD in windows, I know how to connect to a wireless network but ...
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234 views

Pass filename to shell script

On Windows, I can drag and drop a file to a batch file to pass the filename. On Ubuntu 12.10, I can't drag and drop to an .sh file. Opening terminal and running ./sh-file-name.sh file-name.txt ...
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666 views

Shell replacement for kiosk environment with desktop icons

I have to deploy around 80 touch-screen terminals for my company. We're going to run several Windows applications on those terminals and they'll be operated by touch input only. I basically want those ...
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164 views

Get PS1 evaluated value, or shell prompt value

I am trying to find the command that would return me evaluated value of $PS1 variable or just shell prompt with current path. e.g. foo-user@bar-pc:~\bar I would like to avoid using something like, ...
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201 views

Limit CPU usage KSH script

I have a KSH crawler script that crawls filesystems on my network, and i would like to limit it to 25% cpu usage, so it does not impact running systems. I am currently using nice but when i run SED, ...
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164 views

bash starts replacing the characters on the current line insead of moving over to the next line

I use bash shell $ bash --version GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2005 Free Software Foundation, Inc. $ Sometimes, when typing a command on the prompt ...
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442 views

Emacs “shell-command-on-region” does not pass STDIN to command if command line contains meta-characters

I'm running Emacs on Windows-XP SP3 GNU Emacs 22.3.1 (i386-mingw-nt5.1.2600) of 2008-09-07 on SOFT-MJASON When I run a command where the argument contains shell meta-characters, my Emacs region is ...
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5 views

Running the command “bochs -q” from Cygwin fails

I'm having troubles to execute the command "bochs -q" from Cygwin. I have installed the XV6 operation system in my C drive. I'm using Cygwin in order to compile the XV6 files, that is execute the ...
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15 views

Attempt to hide console using Command line, Run, Exec and Pipe in VBScript

I'm using Zbarimg which (I believe) outputs its data to STDOUT. So at present, a cmd string within a VBScript executes the command and stores it in a variable, thus: ...
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43 views

ssh ForceCommand with Match

I try to setup a ssh server which is a kind of jumping host to other servers reachable via ssh. For that I use the ForceCommand like this: Match Group g_ssh ForceCommand nc -q0 my_internal_server 22 ...
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24 views

Enable autocomplete in archlinux adb shell

In archlinux, when using the command adb shell provided by the package android-tools to obtain a shell on an Android device, the auto-completion using Tab is not working. Everything else is working ...
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44 views

Use shell provided by non-root user

What is a good way for a non-root user to use an executable that is not in the system's list of shells as if it were the user's actual shell? I'm trying to do this with two different versions of ...
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100 views

Make Applescript wait for an application to be closed before running a shell script

I have an applet i made using Applescript which opens an Application and then once it's loaded runs a shell script which unload's Spotlight. I need to make it then wait for me to finish using relevant ...
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49 views

WES7 - Custom Shell - How to Install Dependencies

Summary Using the Image Configuration Editor for Windows Embedded Standard 7, how can I install applications before a custom shell is started? Background I'm designing an unattended image for ...
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28 views

How can I configure the cancel button of dialog box bash?

How can I configure the cancel button of dialog box bash? It follows what I've done till now: dialog --backtitle "Dialog - Form sample" \ --form " Form Test - use [up] [down] to select input field ...
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19 views

disable users from creating new shell instances

Is there any way I can disable users from creating new shell instances through sudoers file? also disable them to set any environment variables? I would like to write a line in the sudoers file ...
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45 views

Ubuntu nested bash shell

Thanks for any help. I'm helping configure a machine to log keystrokes using /usr/bin/script function. For each session, a log file is created that includes the POSIX time. $PS1 is changed to reflect ...
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95 views

Shell script force stop without waiting for the exit code

I have written a shell script checklick.sh on my CentOS box with the following content: #!/bin/sh # # description: check link through rtmpdump # . /etc/rc.d/init.d/functions ...
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65 views

Damaged preference file in /bin/sh

Today in Drive Genius 3, I ran the “Verify Preferences” function in Repair. It yielded this strange result: /bin/sh: xargs: command not found The only option Drive Genius gives is to remove the ...
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40 views

Where do the variables of a new BASH shell come from?

I am puzzled as about how environment variables work. From what I am aware, for a new process to have some environment variables, its parent must have issued export. But what about all the variables ...
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44 views

modify shell command in Ubuntu 14.04

I had installed Ubuntu 14.04 on virtualbox, I need to be able to read source code of shell commands, and modify any command? any help please? where i can find the shell commands? in which directory?
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31 views

Kill browser tabs with Bash from younger to older

Hello i want to kill tabs from a browser(ex. chromium) by order from youngest to oldest. I used pkill -f -n -9 chromium but i want to use it in a while iteration with comparison to pkill's return ...
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159 views

What is the difference between set, env, declare and export when setting a variable in Linux shell?

What is the difference between set, env, declare and export when setting a variable in Linux shell, like Bash?
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59 views

Why variables in shell are not inherited by sub-shell now that the sub-shell is implemented by fork?

When running shell command in shell scripts, a sub shell process is generated. Doesn't the process is generated by fork function? Why the variables that are not exported are not inherited? In fork, ...
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20 views

How do I recover from a `tmux a` by mistake within a tmux session?

I have a tmux session with a pair of windows. I want to recover the stdout from both those windows. I found this example, and so, within my existing attached session, ran tmux a. I now have a screen ...
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19 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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13 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 ...