All Questions
Tagged with commandshell-script
76 questions
0votes
1answer
196views
How to determine from the lspci output how cards and how many ports are on a card?
I need to write a script to count how many 2 or 4 port HBA cards we have in each of our servers. I'm running lspci on each of the servers, however, none of the documents I've read so far is telling me ...
- 529
0votes
1answer
140views
How does "Useless cat. ... or 'cmd file | ..' instead." should be applied?
I have the following line: isUbuntu=$(cat /etc/os-release | grep '^ID=ubuntu$' | wc -l) It works fine Now, through VSC and mostly with the ShellCheck extension is indicated two warnings messages as ...
- 2,040
0votes
1answer
92views
Get a list of all user's commands from a non-interactive shell
I am writing a script that would automatically suggest some new aliases/functions to be added to a user's shell config. Before doing that, however, I would like to make sure the aliases being ...
- 51
0votes
0answers
54views
How to gracefully handle differences in command options between different versions?
Inspired by What is the difference between “base64 -b0” in macOS versions prior to macOS 13 (Ventura) and “base64 -i” in macOS 13 (Ventura)? Are there common ways to avoid the script breaking on a ...
- 239
0votes
1answer
369views
Creating & debug of a bash script menu
I've tried a first time with sh like I refer to in my other post here. I'm trying to run a bash script menu to run from terminal only. #!/bin/bash HEIGHT=800 WIDTH=600 CHOICE_HEIGHT=8 BACKTITLE="...
user330163
2votes
3answers
3kviews
How do I get the version of a command inside a bash script
So as the question suggests, I want to get the version of a command inside a bash script, instead of using the terminal. I know that all available commands are present as files inside the directory /...
-2votes
1answer
653views
Redirect the output to two different files, One should have new output whenever the commands execute and the other should have both new & old content
Redirect the output to two different files, One should have new output whenever the commands execute and the other should have both new & old content. For example: openstack port create --network ...
- 1,990
2votes
1answer
2kviews
What does Session ID mean within the pkill context?
About the pkill command, I know is possible kill processes - for specific scenarios - based through tty[1-6] and pts/[0-N]. I tested and works as expected. Until here all is ok. But now, according ...
- 2,040
0votes
0answers
23views
How does Linux create/manage processes assigned through pgid? [duplicate]
I am reading this post: Using job control in the shells About pgid and ppid it indicates: PGID Each process in a process group shares a process group ID (PGID), which is the same as the PID ...
- 2,040
0votes
0answers
38views
ShellScript: How to create manually a parent process and their children process? [duplicate]
I am reading this post: Using job control in the shells About ppid it indicates PPID A process that creates a new process is called a parent process; the new process is called a child process. The ...
- 2,040
0votes
3answers
240views
How to retrieve the command executed by command substitution for log reports
For Simplicity, consider the following: x=$(java --version) echo "x: $x" It works how expected showing: x: openjdk version "11.0.13" 2021-10-19 OpenJDK Runtime Environment Temurin-...
- 2,040
3votes
1answer
2kviews
Run command after prompt
I created a flirt.sh script which just outputs a random sentence with a random color, and now I want it to be ran every time I enter a command I used trap "~/flirt.sh" DEBUG in .bashrc for ...
0votes
1answer
619views
`type` command inside bash script, is not showing all paths
When I type echo "${PATH}" | tr -s ':' '\n' | nl from inside a bash script and at the terminal I get the same result: 1 /home/nikhil/Documents/Git/Cs/Architecture/bin 2 /home/...
- 2,146
0votes
1answer
1kviews
Unable to transfer file from Linux to Windows machine with scp
Through Shell script, I've to transfer files/directories from Linux machine to Windows shared location hence tried with following command - scp <directory-location-path-on-linux>/pom.xml "\\...
- 157
-4votes
2answers
227views
Unix command sed replace in a variable
I want to remove brackets [] and quotes around each value and add quotes at start and end. X= ['8922','9292','3220'] I want output as below. Y = '8922,9292,3220' How can I do this. Please suggest.
- 1
