In shell scripting, a shell such as bash runs a file containing a list of commands (a script). The script is effectively a program and the shell is its interpreter.

learn more… | top users | synonyms

1
vote
0answers
6 views

pause process during lockscreen

I used WhatPulse back on windows and got it installed on Ubuntu, too, but now sometimes, when waking up from standby, it expects an internet connection immediately and builds up a lot of ram and ...
2
votes
1answer
26 views

Rotate images from terminal

I have a directory with a lots of image but they are in wrong orientation. I want to rotate the images to correct orientation (mostly ±90o). Using image (shotwell photo) viewer I can rotate ...
-2
votes
0answers
12 views

How do i re continue my download for ubuntu on my chromebook since it stopped cause my chromebook fell asleep? [on hold]

My ubuntu stopped installing in the terminal on my chromebook how do i re continue the installation? is there a command i can put in to let me continue my download?
0
votes
1answer
57 views

How do i write a terminal script to setup ubuntu for me instead of spending days every time?

From what I understand I can make a text file with all commands same as I would type in terminal, make it executable and run it. Would running sudo mysetup.sh or mysetup.txt be OK so not typing PW ...
1
vote
2answers
32 views

convert with bash - trim/crop and center

i need a fast and reliable way to modify a lot of images. There is a lot of white around my pictures i want to get rid about. The problem is, it is a number of similar pictures, but they have ...
2
votes
1answer
51 views

Can there be two init processes?

I am new to Operating Systems (specifically Linux) and this is my first question here I want to ask, can there be two process with CMD = init (as given by ps - e command). I had two processes on my ...
0
votes
3answers
44 views

Shortcut to execute shell scipt? [duplicate]

I'm trying to create a shortcut that will run a .sh file deep in some directory without having to navigating to the absolute path. I have tried using aliases, which did not work as. Using soft/hard ...
0
votes
0answers
25 views

Reconnecting network through shell script

I've written following code to reconnect to network: #!/bin/bash while [ "$var" != "end" ] do pingtime= $(ping -w 1 192.168.1.107 | grep ttl) if [ "$pingtime" = "" ] then $(sudo ifconfig ...
3
votes
2answers
950 views

What is the difference in running script with ./

What is the difference between running the script by calling directly its name and calling the script by adding a with prefix of './' . I can't find any difference in run time.
1
vote
1answer
56 views

Bash script to remove item from Nginx cache

I have Nginx running in Ubuntu. I'm trying to write a script that deletes an item from the Nginx cache. Script: clear_single_cache_object.sh #!/bin/bash echo "Deleting: " $1 grep -lr $1 ...
9
votes
2answers
118 views

Run only parts of a script as sudo, entering password only once

I am writing a script (actually a combination of scripts and makefile) that installs external dependencies: some apt-get commands, some git cloning, building, installing, adding users to groups, ... ...
1
vote
1answer
33 views

Set up shortcut for different terminal shells

I would like to get some practice using different shells (zsh and ksh, etc...) What is the best way to set it up so I can create a shortcut that will launch a terminal with the desired shell? I'd ...
0
votes
2answers
36 views

Whitespace Problems With Script and Variables

I'm trying to beat my head against the syntax of this. I'm getting problems with whitespaces and I can't see if there's a better way to do this. vardir=/home/user cd $vardir for i in $(ls "$vardir") ...
0
votes
2answers
60 views

Export $DISPLAY value in Shell script

I am trying to Print the value of $DISPLAY under my Shell script. I have Following shell script which Exports the DISPLAY: #!/bin/sh export DIPLAY=:10.0 Here, each time I need to change the Value ...
6
votes
3answers
1k views

Difference between ls -l and ll?

I'm relatively new to programming as a whole and some tutorials have been telling me to use ls -l to look at files in a directory and others have been saying ll. I know that ls is a short list, but is ...
0
votes
1answer
38 views

How to check if a variable is empty on command line? [duplicate]

I have the following shell script echo "please enter user name: " read USER_NAME while [ ! "$USER_NAME" ] do echo "User name can't be empty please re-enter: " read USER_NAME done How can I do the ...
0
votes
0answers
37 views

How to change another user keyboard layout silently?

I'm working to automate development environments with Vagrant which manages Ubuntu Desktop 14.04 VMs. My Vagrant script: Creates the VM Setup a new user account based on the host user account Does ...
0
votes
1answer
31 views

Things That Can Be Made In Shell Script? [closed]

So I just started using shell scripting, and was wondering what type of programs you can create. I want to continue using shell script, but if it doesn't lead to anywhere particularly useful I ...
0
votes
2answers
45 views

How do you create a shell script?

I need to create a shell script that will create a user then put it into a group. How do I do it?
1
vote
1answer
15 views

package “state” vs “selection state”

All answers that I read, suggest listing/saving package selection states. i.e. dpkg --get-selections But the selection state could be different from actual. So why use that? Is it just because ...
-1
votes
1answer
31 views

Do something in terminal that involve changing user [closed]

I want do something in terminal that involve changing user like: sudo su do something do something exit do something do something sudo su do something do something exit I've tried to do something ...
1
vote
1answer
35 views

My script only opens new terminals when the previous command's terminal is closed

Sorry if my title is a little hard to understand, I tried to condense the issue as much as possible. I'm trying to run a bash script which opens a new terminal for each major command, that way I can ...
1
vote
1answer
83 views

While Loop Syntax Error

I'm attempting a modification of apt-fast to support parallel downloading and installation. I'm having some trouble with this loop: get_install(){ while ((!${pkg}-finished)) do if [ "$CURNUM" -lt ...
0
votes
0answers
34 views

Script to install software after clean install

I apologize for opening a new thread on this, as I am simply asking for a bit more info on this post Creating a script to install software after a clean install? -- but I don't have enough reputation ...
3
votes
1answer
134 views

How to display all services and version that runs on a host?

I am trying to display all services and their versions that runs on a host using ports from 1 to 1023, in this way: ssh, OpenSSH 5.9p1 Debian 5ubuntu1 (protocol 2.0) smtp, Postfix smtpd http, Apache ...
0
votes
2answers
111 views

How to read user last email using a shell script?

Let's say I have two machines A and B On A I have installed and configured a SMTP and IMAP server For example I have user: george with password: 123456 on Machine A I am trying to write a shell ...
2
votes
3answers
44 views

How can I refer to all files that are named using two numbers?

I want to make a shell script that downloads all files that area named [0-9][0-9].png; e.g: 00.png 01.png 33.png 91.png etc files = ??????? for file in files do curl ftp://server/${file} done ...
1
vote
1answer
45 views

Get results from PHP pages after login [closed]

I have 10 php files like 0.php , 1.php, 2.php etc All those files contains an auth form which send two inputs username and password to itself via post. After login there is a message displayed. I ...
3
votes
4answers
553 views

Is it possible to create commands, put it in one file and run without “./”? [duplicate]

If I create a script in a file like this: #!/bin/bash echo "test" As far I know (as a newbie) is to put it in some folder then make it executable with chmod +x myscript and then execute it with ...
0
votes
0answers
19 views

ftp in script is asking password though the password is in script

Previously the below script have not asked password when execute but all of a sudden it is asking password. I have tried to pass the username, password and server name in single quotes but still it is ...
-2
votes
1answer
34 views

How does this lowercase expression works in bash

I want to convert a vaiable value to lower case. To do this, I am doing following lower_case_var=echo ${var,,} Above expression works fine. However, I am wondering that how it works?
2
votes
4answers
563 views

Why is this Bash script not working?

I wrote a small Bash script so that the image in the folder becomes the wallpaper: for f in *.jpg do gsettings set org.gnome.desktop.background picture-uri file:$f The error is: ./wall.sh: ...
0
votes
1answer
28 views

Short keys to make a line comment in shell script Emacs?

I want to write shell scripts by using Emacs. I have already known to turn shell-script-mode on, but still don't know which short keys to make a line become comment. For example, which short keys in ...
10
votes
2answers
224 views

Auto clear search term from lens

There must be a setting or a shell script that would clear the terms from the lens every time it's closed. The behaviour would be: open lens and type a term. reopen the lens with super key. see ...
0
votes
2answers
45 views

Bash: Regular Expressions in substitution

I have a bash script to substitute number values inside a text pattern. Suppose I have a file like this: word5word word55word And I want it to look like this: word125word word125word I have this ...
0
votes
0answers
22 views

How to identify with desktop environment id installed to configure lightdm-theme

I have a creepy problem here. I have to identify the desktop environment installed by an user without to know with one it's used by an user to change the user session value ion some lightdm-files. ...
1
vote
3answers
43 views

How to get up time for the terminal

How to get the uptime from. The terminal. And in a bash file but only the uptime no other infomAtion I would like it to be on one line
-4
votes
2answers
84 views

Search csv file column

Is there a way to search the content of a specific column of a csv file using the terminal. But that it still returns all the information of the rest of the columns. I want to be able to search for a ...
1
vote
1answer
82 views

Is there a way to reprogram the thinkvantage button to assign a shell bash program to it?

Is there a way to reprogram the lenovo think vantage button to open and run a shell bash program on ubuntu 14.04 lts? I have tried system preferences > keyboard >shortcuts > custom and assigned a ...
0
votes
0answers
18 views

display number of packets

need to write a script that takes and interface as parameter and prints to stdout like this: interface TX: no.of tx packs sent RX: no of rx packs sent this is what i have written, but it prints the ...
2
votes
3answers
37 views

Script not having permission to write

Hello i have to write a script with the name setip that can be ran like this: ./setip ip mask ,and that must set the ip ip and the mask mask on the lo1 interface.this is the content of my script, but ...
0
votes
0answers
31 views

Simple Mount Script Not Working?

just really not understanding what's wrong here. I had a script that worked fine on 14.04, but I screwed up something on there and accidentally removed some system apps and made it fail to boot. So, I ...
1
vote
0answers
51 views

How to get a list (from shell) of Icon Themes installed?

I'm developing a simple script for change the icon theme with Unity. How could I know all the current (Ubuntu & Unity) System Icon Themes with a shell command? There are a few folders in ...
0
votes
2answers
364 views

Shell script to copy a specific file from one folder to another with date

I want to write a script which look for a specific file in a specific folder. file name and location will be pre-define in the script. A loop will run, if the file exist, it will copy that file to ...
0
votes
0answers
30 views

How can i change a script to a system command? [duplicate]

If I have a script, let's say shebang.sh. To execute, I have to do './home/user/Desktop/shebang.sh ' How can I make it 'shebang' From any directory?
0
votes
0answers
46 views

x-shellscript opening with gedit

I've downlodaded this plymouth theme, but when I try running the install-orb script, it opens in gedit I already checked "Allow executing file as program" in properties, but it won't solve. @edit ...
2
votes
0answers
59 views

How to have a video player resume from where I last left off?

I'd like to be able to launch a video player (VLC, SMPlayer) via Terminal, using some command like resume_media and then it will automatically find the most recently played media file (.mkv, mp4 etc.) ...
0
votes
1answer
82 views

How to run a script on a remote computer from a local computer over ssh and save the ouput on the local computer to analyze further?

Lets say i have a script in my local computer like the below one which will list files of a directory on my remote computer and run a "for" loop to save the files on my local computer. Then a check ...
1
vote
1answer
173 views

Problem with shell script to reboot computer/switch to windows

I have little experience with linux and hardly ever wrote an shell script, but needed a workstation with both windows and linux to do certain calculations. The workstation is however mostly used ...
1
vote
1answer
24 views

How a Script exit when a software does not install properly?

i got idea form the link (How do I write an application install shell script?) and started to wrtie script for installing software in ubunt automatically. But in case if the software does not install ...