Bash is the shell used in Ubuntu's command-line interface.

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Script Not Running Properly On Server

I am having an issue with my webserver. I am testing it out on a new kernel build and it seems as if I can't get one certain part running on it. All of my scripts work except this one. Every file ...
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1answer
575 views

How do I use a shell command as a launcher shortcut? [duplicate]

The following command from terminal works perfectly: sh /home/flux/Downloads/TeamSpeak3-Client-linux_amd64/ts3client_runscript.sh How would I go about adding this as a shortcut, so I can open ...
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1answer
237 views

mkdir crashes bash

I'm trying to create a directory in my home directory but the shell itself keeps crashing. I have permission to write to the directory. I am able to create files in the directory via touch. I can ...
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1answer
212 views

script.sh run differently when manually opening terminal and when using .desktop launcher

I have a script file script1.sh as shown below: #!/usr/bin/env bash cd /home/userA/scripts . r1.sh when I manually open a terminal and run it using . script.sh it works fine. But when I created ...
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1answer
44 views

Bash: Is there an analogous command to `which` for shell functions?

I'm working with Virtualenv, which I found out (after a few google searches) that it creates a shell function called deactivate in my shell. By looking through the package's files I found how it does ...
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1answer
691 views

shell file opens terminal and run a sequence of commands in specific order

What I used to do is: Manually open a terminal instance to run the following commands and shell files Run PACKAGE_PATH=/home/userA/package1:/home/userA/package2:$PACKAGE_PAT‌​H run: cd /home/...
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1answer
338 views

feedingbottle/n”export: No such file or directory

I'm noob in linux, so i install feedingbottle, but then I open terminal showing this: bash: “PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/bin/...
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1answer
670 views

how to run command in an already opened terminal through a shell script

I'm running a shell script.sh which is supposed to open terminal and then run some commands in this opened terminal. What happens is that the terminal starts but the following commands are not ...
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2answers
167 views

Desktop Launcher executing a sequence of commands after opening a terminal

I've created a .desktop launcher as shown below which successfully opens terminal. What I want to do next is to run the following commands such as cd home/userA/scripts then PACKAGE_PATH=/home/userA/...
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1answer
92 views

At what time does bash scripts execute? [closed]

I would like to run a bash script at system startup. I read recently that some bash scripts are executed before logging in to a user account, others, after. Can I get some information on when bash ...
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1answer
413 views

Copying files and folders with cp with shopt extglob - error is not a directory

I'm trying to copy files from a directory while excluding a folder and a file. My problem is that a get an error with shopt extglob activated. Here is my code: DEPLOY_SIMULATION_ENV="/home/user/...
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677 views

Run some shell files from another shell file in different location

I have 5 shell files in a specific locations on my ubuntu system. I have two users on this system userA which is the main user and userB. Currently I have to manually open a terminal using user userA ...
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4answers
1k views

Why is the output of _$ _ when executed on a terminal?

I have executed the following command sequence: $ now=$(date) $ echo _$now_ _ $ echo _ $now _ _ Mon Sep 22 09:53:44 IST 2014 _ Why is the output of _$now_ only _?
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1answer
3k views

Stopping a running script though another script file

I am new to shell scripts. Say, I start a script like this. This runs for 3 days. So, I will start the script remotely through ssh and then close my local terminal. start.sh end=$((SECONDS+259200)) ...
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1answer
39 views

Redirected Output

I just used a command ls -l > ~/ls_output in my /usr/bin directory and I'm not sure what happened. The terminal accepted my command but I don't know what happened to the output or where it went. ...
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1answer
1k views

Ubuntu 14.04 - Desktop icon is not running my BASH script

I have a simple script runme.sh which works when i run from terminal. #!/bin/bash chromium-browser "https://askubuntu.com/" But i need to make it now runnable for normal Users. So i place a desktop ...
2
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1answer
629 views

post-receive: No such file or directory

I'm getting an error when trying to push to a remote Amazon EC2 (Ubuntu Linux) instance. I've given all related directories and files full permissions. I'm trying to use a post-receive hook to move ...
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2answers
240 views

Unable to delete file

I am unable to delete file: sudo rm /usr/local/bin/Katy Perry - Dark Horse (Official) ft. Juicy J-0KSOMA3QBU0.mp4.part It is showing an error: bash: syntax error near unexpected token `(' How to ...
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2answers
1k views

Only display a range of entries from the bash history

Is it possible to set a fixed number for the "history" command to only show a certain amount of history items like 100, instead of everything from the beginning of time?
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0answers
46 views

Display running clock in terminal [duplicate]

I want to display running clock inside terminal. I have already gone through this answer but this method only works in zsh terminal. But I want to display in bash. Is there any other way to display ...
5
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1answer
1k views

Difference between cd / and cd //? [duplicate]

What is the difference between cd / and cd //? We can see that adding / to the end doesn't do anything. But when I do cd // and pwd, I found: $ cd // $ pwd // What is difference between / and //...
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4answers
978 views

Explain exec in simple terms?

I don't understand the bash command exec. I have seen it used inside scripts to redirect all output to a file (see http://www.xensoft.com/content/use-exec-direct-all-bash-script-output-file-syslog-or-...
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1answer
168 views

How to quickly check the value of bash variables, aliases and history commands from terminal?

How do you expand in place: bash aliases environment variables history commands to edit them and check they are correct? For example, I have some aliases I use for flashing different devices and ...
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2answers
902 views

Creating a new subdirectory in multiple existing directories

I am trying to figure out an elegant way to create a new subdirectory in a series of existing directories. I have 15 already created directories called Week1 through Week15. Within those directories,...
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2answers
1k views

Pass variable value to script from terminal

I like the shred command so instead of using the 'rm' command I prefer shred. I would like to create a bash script in /usr/bin, say we will call it "shredder" so that if I want to shred a file (i.e. ...
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0answers
36 views

“sudo !!” doesn't give me permissions. What am I missing? [duplicate]

When you forgot to sudo a command you may want to write, sudo !! That would execute the last command applying the sudo command to it. However sometimes seems I can't do that, for example inside /...
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5answers
2k views

How can I run original command that aliased with same name?

An alias for ls command in ~/.bashrc file aliased with this one: alias ls='ls --color=auto' then, when I run ls command in terminal aliased ls(ls --color=auto) runs. but my question is how can I ...
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1answer
2k views

Crontab not executing jobs Ubuntu 14.04

I am trying to run bash script as a cron job every 15 minutes. The bash script simple calls a Java program. I made an entry in crontab to run the file every 15 minutes and saved it but it would not ...
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2answers
1k views

Hide stdout of a process only when it is running in background

How could I hide the standard output of a process only when it is running in background? For example, test.sh #!/bin/bash for i in $(seq 200); do echo $i done Now, I run the script. I stop ...
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1answer
382 views

CPU performance on sleep command

This is rather a beginner question. I wonder what happens when sleep command is triggered from a bash script, for example. That job would still running, with less priority?
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50 views

Diffrence beetween ' and " in bash [duplicate]

Please bear with my stupid question. I want to know the difference between ' and " in bash. Please explain it to me with an example.
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1answer
359 views

How to let bash script knows if the open terminal is closed or not

I want to write piece of bash script that open a gnome-terminal tab and execute some commands in it after finishing execution terminal will close , i would like the make bash recognize if this ...
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3answers
669 views

Not able to run sed on bash script

I am working trough some legacy code which does not work, I came across a part that is causing problems. I was hoping some one could help me out and fill me in on what is the exact functionality of ...
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2answers
163 views

Bash script special character and background job bug

gnome-terminal --tab -e " sh -c ' gedit'/media/ubuntuman/Onces And for Al/scripts/faceBook' & ; sudo cpulimit -e ubuntu-tweak -l 80;'" This is the piece of code I want to edit. The special ...
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4answers
2k views

Creating a symbolic link to a directory

I have a directory to which I want to create a symbolic link. The commands I used were: cd workspace_b4a cd android-sdk-linux ln -sv build-tools/20.0.0/lib/ platform-tools/lib The output was: ‘...
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1answer
183 views

Can't trap (Ctrl^C) in my simple script

I don't know why I can't trap Ctrl^C in this simple script. #!/bin/bash for number in $(seq 10); do echo -n "." sleep 2 done function finish() { echo "bye." } trap finish ...
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1answer
1k views

Can't Change power_method 14.04

I am trying to modify my power method for my ati card as it's like having a helicopter in the room. I use the same methods described here. sudo bash -c echo "profile" > /sys/class/drm/card0/device/...
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1answer
826 views

bash: /etc/bash.bashrc: Permission denied I have no name!@lappyname:~$

During resolving another problem I run this command : pkexec chmod 0440 /etc/sudoers pkexec chmod 0440 /etc/sudoers.d/README mount -o remount,rw / Than after error occurs and after reopen the ...
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2answers
718 views

Reset History inside a bash script [duplicate]

I want to make a bash script that clears the history i.e. works similarly as the command history -c So I started with the following code:- #!/bin/bash history #displaying history history -c #...
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2answers
310 views

Error using “cp” to copy files to an external disk

I have a 2TB external HDD formatted with exFat that I use to share very large files (>10GB) among Ubuntu, Windows 7 and MacOS. I am trying to copy the whole content of a directory using sudo cp -r . ...
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1answer
116 views

Path to shell script in aliases with ./

I'm trying to make an alias for my shell script which is saved in ~/Dokumente/music.sh Therefore, I added following line to ~/.bash_aliases: alias music='.//home/robin/Dokumente/music.sh' After ...
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2answers
759 views

exports in .bashrc not working

I have a program .path.py which prints an export command for PATH. In my .bashrc I have an entry at the top $(python $HOME/.prefix/.path.py) except that when I login over ssh, or even run source $HOME/...
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1answer
896 views

fsl.sh cannot be sourced

I need to install FSL and Freesurfer as part of running Connectome Mapper. Freesurfer required changing the shell to tcsh in order to configure its folders. Now for FSL, I have to add to .profile the ...
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2answers
931 views

How to run .sh through terminal without using Nautilus Ubuntu 14.04 [duplicate]

I have an .sh file that looks like #!bin/bash exec /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/ java java -jar /home/me/myfolder/my.jar I've made this file executable and it works fine when in the "...
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2answers
169 views

How to write a script with nautilus actions?

I want to use nautilus actions with my own script which I have usually started successfully with open-terminal and pasting the command (s. below) directly in the terminal. for file in *.mp4; do mkdir ...
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3answers
1k views

How to differentiate command from the output using color

I have to differentiate command from the output using color like this $ cat file-name (this should be in some color say like red) some test in file OUTPUT (this output should be in some other color ...
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2answers
518 views

I think I deleted bash!

I am attempting to make a PXE server that will boot Ubuntu (live cd) 14.04. I was trying to copy the bash file from /bin/bash to /var/lib/tftpboot/Ubuntu/bin/bash I must have used the "...
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2answers
299 views

How to properly detach a command?

I have this little script I use to launch a root Nautilus window (yeah, dangerous, but sometimes necessary): #!/bin/bash gksudo --description "Launch a root Nautilus" -- sh -c "xdg-open / &" ...
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1answer
1k views

Undo apt-get remove --purge

I wanted a fresh install of Python and ran sudo apt-get remove --purge python. Apparently it has killed almost everything I had installed in my system. Looking at the history.log I guess I could ...
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3answers
242 views

Cannot find location of permanent aliases.

A couple of months ago, I made a few permanent aliases for my bash shell on Ubuntu 14.04. They are actively making my life easier, and I would like to add a couple more to the list, but I cannot find ...