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

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2
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1answer
6k views

Run bash script from php

I want to run a shell script within a php webpage to check some processes running on my system (Ubuntu 12.04). Googleing I've found about shell_exec() but I can't manage to run the script when loading ...
2
votes
2answers
7k views

Execute sh script from *.desktop file?

What I want to do at all, is that: Create script that has icon on it. So I know only one way - file.desktop file with icon. Settings icon on it was successful, but I have no luck setting EXEC value :/ ...
2
votes
1answer
678 views

Replacing some characters in the previous command

Sometimes, being rushed, it is possible to type some characters wrong in a command-line. If the command is long, the mistake correction may be cumbersome (using arrow keys). So the problem is: how can ...
2
votes
1answer
328 views

How to stop bash prompt colours from escaping

I'm trying to configure bash to display the current git branch, based off the example here, but I can't figure out how to get bash to stop escaping the colour strings. Everything I try results in the ...
2
votes
2answers
2k views

gnome-terminal and logging

Is there any way to log every that was displayed in gnome-terminal? for example I have a complex command doSomethingThatPrintoutsAlot ; doSomethingThatPrintoutsAlot2 ; doSomethingThatPrintoutsAlot3 ...
1
vote
4answers
285 views

Change directory structure from /YEAR/MONTH/DAY/ to /YEAR-MONTH-DAY

I need to change my directory structure for my photos from /YEAR/MONTH/DAY/ to /YEAR-MONTH-DAY I know this can sort of be done with exiftool, but it will only work on files containing EXIF-tags, and ...
1
vote
1answer
175 views

How to add element to the gsettings array at the specific location (given by index)?

I want to write a script that translates devilspie's window rules into compiz' rules. Compiz settings can be changed by gsettings keys in path org.compiz.profiles.unity.plugins.place. There are three ...
1
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5answers
3k views

How to remove special 'M-BM-' character with sed

File: https://dl.dropboxusercontent.com/u/32919746/file I have file that was created by copying content from DOCX document with LibreOffice into text file. I have modified file with sed to remove ...
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2answers
2k views

Ubuntu 12.04 Can't Login-Tty Console said: -bash: /usr/bin/byobu/-launch: no such file or directory

I face problem in login to Ubuntu 12.04. I think it's caused by accessing super user (if not wrong). I type sudo nautilus to put a background to burg, but i fail x_x. After reboot, i can't login to ...
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5answers
4k views

How to execute a .sh file when the session starts?

I have a .sh file that I execute just going to the containing folder and writing ./file.sh. I want to execute that file when the session starts, so i create a symlink in /etc/init.d. I expected it ...
1
vote
1answer
2k views

How to get nicer error-messages in this bash-script?

I'm trying to catch any error when run a command in order to write a log-file / report I've tried this code: function valid (){ if [ $? -eq 0 ]; then echo "$var1" ": status : OK" ...
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1answer
530 views

/var/log/secure not present in 14.04 ,is there any alternative?

While reading about Linux ,especially about sudo I got:: A message such as the following would appear in a system log file (usually /var/log/secure) when trying to execute sudo bash without ...
0
votes
1answer
431 views

Using for loop to create a flexible radio list in a dialog box from a shell script

I want to create a little Program using Dialog to play logfiles created with Script. The problem is that I can't get a dynamic radio list that automatically adds a row if a new logfile is created. So ...
0
votes
2answers
1k views

Logging of commands executed in Bash

Sometime back, we had a requirement to log commands run on the terminal in the Bash shell. This was solved by means of a startup script with essentially the following contents: #!/bin/bash ...
0
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2answers
4k views

Run .sh script on Ubuntu without using terminal

I'm using Ubuntu and I've created a simple script file: #!/bin/bash cp /home/guilherme/pictures/*.jpg /home/guilherme/backup When I run it on terminal typing the command "./script.sh" it works ...
0
votes
2answers
977 views

Batch command that reqiures output redirection

When I want to process a bunch of tex files, I use for f in *.tex; do latex "$f" ; done; What do I do when I need to redirect output to another file, like in case of catdvi? The following does not ...
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2answers
1k views

How to append text to file every morning?

I would like to append current date to text file every morning at 7am. if the computer is turned off I would like it to be executed after its turned on.
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2answers
11k views

Bash return permission denied error when I redirect the output of ls to a file [duplicate]

I'm currently studying shell commands, one of the exercises consists in creating a structure with various directories and subdirectories. I wrote ls -laR > hello, it was supposed to create a text ...
9
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2answers
932 views

What does the l command do?

There is a command l available on my machine which appears to do nothing. which l also produces no output. Is this a real command, and does it actually do anything?
7
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3answers
1k views

How to open several image files from command line, consecutively, for editing?

Lets say I have three image files to edit. Consider all the files are in ~/Pictures. Let name of the first file be 1.svg, name of the second file be 2.svg and name of the third file be 3.svg .I have ...
7
votes
1answer
19k views

How do I get the parent process ID of a given child process?

How to get parent pid from a given children pid? I know I can mannully check it under /proc, I am wonder if there is a smart/better way to achieve this in Ubuntu. Note the parent may or may not be ...
6
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2answers
8k views

How do I install and use voice commands?

How can I give my own command using mic. I would like to give command like: "Update system now" So system will automatic run apt-get update I've seen Gnome Voice Control but I get error : $ ...
6
votes
6answers
26k views

How do I change my PYTHONPATH to make 3,2 my default Python instead of 2.7.2?

I have python3.2 located in /usr/lib/python3.2. I am not sure if that means it's installed but I assume it is for now. Some facts about my system: $ which python /usr/local/bin/python When I type ...
6
votes
3answers
497 views

How do you get details from the output of the locate command?

When I run the ls -l command I get details about the files in the current directory like permissions, owner, group, file size. Is there a way I can get these same details instead of just the ...
6
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3answers
6k views

using grep with pipe and ampersand to filter errors from find

I am using cygwin to find a file on the cygdrive. However I need to suppress the permission denied messages (otherwise the results get hidden in the error messages). The following command works: ...
6
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3answers
2k views

Why does my shell script hang without the .sh extension?

I created a shell script /usr/local/bin/suspend with the following content: #! /bin/sh # Take an optional delay parameter if [ "$#" -gt "0" ]; then sleep "$1" fi # Put the system to sleep ...
5
votes
1answer
190 views

How to prevent output from '&' and '>' operator (send to background operator and redirection operator)

I have tried various combinations of gedit, &, >/dev/null 2>/dev/null. When gedit is used with the other two it always prints something to the terminal. I understand that the numbers are ...
5
votes
4answers
695 views

Redirect pipe output to the same file

Is there any short way to save the pipe output to the same file that it's processed. For example, this is what I am actually doing $ cat filename | sort | uniq > result $ rm -f filename $ mv ...
5
votes
2answers
257 views

How to easily make an alias command permanent? [duplicate]

I search everywhere and almost everyone was suggesting to open the ~/.bashrc or ~/.bash_aliases, then put the alias command there, I created a function name palias as permanent alias function and put ...
5
votes
4answers
671 views

How can I prevent accidental execution of the rm -r *command?

Occasionally I use command to delete some files. For example, the name might start with 'a', so I'll delete with the command rm -r a*, but I don't want to remove some other directory by accident. How ...
5
votes
3answers
824 views

How do I list the public files in my home directory? (mode 777)

I want to get the list of all the files in my home folder, having rwx (read-write-execute) or 777 permissions for everyone. Also, what is the command to know the permissions of a file?
5
votes
5answers
6k views

How to have a path containing spaces in PATH?

I tried export TASK=$HOME/Ubuntu\ One and export TASK="$HOME/Ubuntu One" but neither works.
5
votes
3answers
863 views

Why is this by passing the SUDO password?

I have a bash script I am using to automate a SVN checkout. The contents of the file were: #!/bin/bash cd /var/www-cake sudo svn checkout file:///usr/local/svn/bash_repo/repo/ Then when I double ...
4
votes
2answers
212 views

Print only one line at a time from text file

how can I print or display only word from a text file at a time. When I run my script it should only display each word from the text file one by one, but only display that word. This is what I have ...
4
votes
2answers
146 views

Emulate mouse click when hitting a key

I am trying to emulate left-mouse-down when Home key is down and left-mouse-up when Home key is released. The reason behind that is my touchpad's buttons are terrible and I like to use the ...
4
votes
4answers
540 views

Getting values from variables - bash script

I am trying to write a bash script to print values of the 3 variables. Keep getting errors. What am I doing wrong? INPUT1=/tmp/dir1 INPUT2=/tmp/dir2 INPUT3=/tmp/dir3 for i in 1 2 3 do echo ...
4
votes
4answers
4k views

How can I make ssh-copy-id use a port other than 22?

How can I make ssh-copy-id use a port other than 22? I tried it with -p but I get: ssh-copy-id -p XXX XXXX@XX.XX.XX.XX Bad port 'umask 077; test -d ~/.ssh || mkdir ~/.ssh ; cat >> ...
4
votes
1answer
3k views

Can't change theme of ZSH in Ubuntu 12.04

I have changed the theme in my ~/.zshrc file however whilst some of the colors in the prompt change the text size and background color remain as the Ubuntu default. Any one know how I can override ...
4
votes
1answer
2k views

Toggling between Unity 3D and unity 2D [closed]

Generally, I much prefer Unity 3D over the 2D version, which is a bit broken on my machine. However, I frequently give presentations, and Compiz doesn't support multiple screens. I've been forced to ...
3
votes
3answers
324 views

Sudo command in bash script halts the script

I have an early 2009 iMac with a sensor problem. The ODD and CPU fans run at full speed. To get them down to minimum speed in Ubuntu I need to set the speeds in the Terminal, using this method. Rather ...
3
votes
1answer
1k views

How to check in a bash script if passed argument is file or directory?

I have to write a simple bash script in Ubuntu which would allow me to pass it some arguments and I want to check if these arguments which can contain spaces are files or directories. How can I do ...
3
votes
2answers
6k views

How to rename all files in folder with name ending with “_backup”

I have a bunch of images that were somehow renamed from myimage.jpg to myimage.jpg_backup, so the images on my website don't load anymore. How would I recursively find all images ending with _backup ...
3
votes
1answer
82 views

no features in bash in new vps?

I have 12.04 server minimal running on my VPS. When I ssh into the server, only $ is showing at the prompt for each prompt. There's no typical <directory> <username>$, no autocompletion ...
3
votes
2answers
4k views

Run Bash Script as Root

Is there some way I can run a Bash script as root without being prompted for a password every time? I'm attempting to automate the process of starting my LAMPP install, which requires me running a ...
3
votes
2answers
4k views

How to replace/fix a messed up /bin/sh and /bin/dash

I have corrupted my /bin/sh and have no idea how to replace it. I accidentally copied over it. How can I fix this? I am running Ubuntu Server 11.10, no X. update: I have tried the fix that was ...
3
votes
2answers
789 views

Wget like utility to download all images in mysite.com/img/ directory

My access to the mysite.com/img/ directory is blocked. However all the images in that directory are in the form n.jpg where n is the nth image. My access to mysite.com/img/n.jpg is not blocked Is ...
3
votes
4answers
222 views

Is there a way to take influence on behavior of bash history?

In terminal the bash history is often helpful when you are searching for a command-line that you already used. But is there a way to influence the behavior of the bash history (i.e. which commands are ...
2
votes
1answer
54 views

can't find package crontab-ubuntu 12.04

I am trying to install cron for scheduling and before anyone says duplicate, I have tried the methods of sudo apt-get update and upgrade mentioned and they don't work. When I go to install crontab, ...
2
votes
1answer
208 views

Why isn't .profile sourced when opening a terminal?

Just installed Ubuntu 14.04.1 LTS. According to .profile, # ~/.profile: executed by the command interpreter for login shells. # This file is not read by bash, if ~/.bash_profile or ~/.bash_login ...
2
votes
1answer
275 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 ...