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.

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12 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
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1answer
26 views

Do something in terminal that involve changing user [on hold]

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 ...
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0answers
30 views

Script to move files or directories using scp and zenity

I need to create a script to do the following (between lubuntu machines in the same network): Ask the user to select a file or directory to be send (with zenity) Ask where is the destination of the ...
1
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1answer
22 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
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1answer
72 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 ...
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0answers
23 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
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1answer
124 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 ...
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2answers
82 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
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3answers
43 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
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1answer
34 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
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4answers
530 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 ...
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0answers
16 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 ...
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1answer
29 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
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4answers
515 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
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1answer
24 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
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2answers
196 views
+50

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
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2answers
36 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 ...
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0answers
17 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. ...
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3answers
37 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
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2answers
53 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
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1answer
63 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
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0answers
16 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
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3answers
32 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 ...
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0answers
24 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 ...
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0answers
39 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 ...
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2answers
89 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 ...
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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?
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31 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
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0answers
48 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.) ...
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1answer
53 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
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1answer
101 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
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1answer
22 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 ...
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0answers
31 views

How to batch download youtube-dl trailer based on a folder name?

I have some folders with movies and I am trying to figure out how to download trailers from youtube Folder structure: |-Movie Name #1 (2008) |-Movie Name #2 (2013) |-..... Trailer file: ...
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1answer
33 views

Can somone help me make this script more readable?

SRC="/src" export DEST="/dest" find "${SRC}" -iname '*' -type f -exec bash -c 'EXT="${0##*.}"; EXT=${EXT,,}; if [[ "${EXT}" == *"/"* ]]; then EXT="no_extension"; fi; mkdir -p "${DEST}/${EXT}"; rsync ...
6
votes
1answer
133 views

Executing a script when inserting a flash drive

How can I write a script that fires on an event? When I insert an USB flash drive, Ubuntu mounts it and automatically opens Nautilus. When this happens with a specific flash drive, I'd like to open a ...
1
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0answers
25 views

How to terminate server process?

I just created automation sending an email using a shell script, but it always running and send me an email every sec to my email. I'm using PID and that process name to terminate it, I'm writing ...
2
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1answer
118 views

Shell script for list of users by groups

I want to write a shell script that generates a list of users. for each user display the username and ID and all groups the user is a member of it means like GROUPS command but for all users and with ...
3
votes
4answers
262 views

How to select and print IP address from a set of strings?

I have a sentence whic contains an IP address. For example, This sentence contains an ip number 1.2.3.4 and port number 50, i want to print the IP address only. From the above sentence, I want to ...
0
votes
1answer
19 views

Where can I find a good tutorial to take me through the baby steps of shell scripting? [closed]

I am an extremely poor programmer who has got to do this. I need a really basic tutorial that builds me up to being able to write shell scripts but have found that not everything I stumble upon is ...
1
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3answers
141 views

copy n number of files from one folder to another folder

I have a folder of n number of files. I need to move n/2(or)n/3 files from that folder to any other folder. How to set the value of n so that it will move exact those number of files?
2
votes
3answers
64 views

create a .tar file of all latest files in the directories

I am in a directory A. This has a lot of sub directories B, C, D. Each sub directories will have a list of files. I need to create a .tar file of all the latest file in each subdirectory. Example: ...
1
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1answer
32 views

How to retain back to the last permission of file or directory [duplicate]

I have accidentally changed the permission of a file now I want that file to back to the last permission state but how to do this? Is there any procedure or tool or any command line script which keep ...
5
votes
3answers
679 views

What is the point of the bash Null-operator “:”, colon?

What is the point of the "null" operator in a BASH script? I understand that it is used as a placeholder following an if command when you have nothing to say, but need a command to allow the program ...
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votes
2answers
59 views

Shell Script to check for subdirectory [closed]

A. I used the following code to get the modified date of a file. But this is also selecting the subdirectories and thus returning an error. How can I fix this? for file in $1/*; do echo `stat ...
1
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2answers
211 views

Shell script file (.sh) does not run, and throws an error

I am new to linux, and I have a shell script (.sh) file I on my Desktop that I want to run. These are the steps that I did: This is the content of the test.sh file on my Desktop: #!bin/bash ...
0
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1answer
23 views

Can an sh (or index file) be used in CCC profiles instead of the binary?

I am trying to set custom graphical options in AMD Catalyst Control Center for a specific program. There is a single sh file that launches it but there are 4 completely different binaries (not ...
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1answer
58 views

Copying 100 files at a time using terminal [duplicate]

Is there an option to copy first 100 files from a directory to another location using the cp command? If not is there any other way to do this? Do i need to write a script?
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0answers
15 views

Count total no of functions in .h files

I want to have a count of total exposed functions in my module? I tried grep -rn "(" *.h|wc -l but I am not getting exact answer How do I count total number of global functions in my module?
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0answers
18 views

Dual booting thwarted by rogue keyboard presses?

End goal: successfully dual boot Windows 8.1 and Ubuntu 14.04, both are already installed and working. I just can't get to the bootloader (I think it's called) to choose to go back to my Windows ...
1
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0answers
39 views

Unable to connect to X11 display. is $DISPLAY set? - Yes, it is

I'm trying to run this in my /etc/init.d/rc.local. I had to manually add the exit 0 because it wasn't there by default if that makes any difference. cd /home/john/xcape && ./xcape -e ...