Questions tagged [options]
Passing options like -l or --word to commands, or parsing them in scripts.
338
questions
4
votes
2
answers
4k
views
What precisely does cp -b (--backup) actually do?
Before you hit me with the obvious, I know, the backup option makes a backup of a file.
But the thing is, the cp command in general backs up a file. One could argue a copy of a file is a backup.
So ...
0
votes
3
answers
151
views
Difference between -q and --quiet? [closed]
I was wondering:
What is the difference between -q and --quiet?
And in which case do I use -q and --quiet?
Thank you!
- 17
0
votes
1
answer
519
views
Add options with default value on shell script
I want to add some options to my custom shell script. I can show it to you since it is not top secret content :-P
In my experience, there are two option types, set and unset options: set options are ...
3
votes
1
answer
4k
views
in bash the option "set -e" causes exit immediately, which is a problem in sourced scripts
When using bash in a terminal often scripts have to be run sourced. In such cases terminating the script must be done by "return", but not by "exit" in order to not kill the basic ...
- 111
0
votes
1
answer
586
views
When is mandatory use the "--keep-newer-files" option for the tar command?
About the tar command
Introduction
Having for example:
source
numbers
001.txt # with the 111 content
002.txt # with the 222 content
003.txt # with the 333 content
If is created the numbers.tar....
- 1,786
4
votes
1
answer
4k
views
How to extract the tar.gz file but without overwriting existing files?
With the unzip -n /path/to/filename/filename.zip command the compressed file is uncompressed but does not overwrite existing files. This approach is useful when the same compressed file was ...
- 1,786
0
votes
1
answer
2k
views
curl: (6) Could not resolve host: services.gradle.org
If in Ubuntu Server is executed:
curl https://services.gradle.org/distributions/gradle-7.5.1-bin.zip -O
appears:
% Total % Received % Xferd Average Speed Time Time Time Current
...
- 1,786
0
votes
1
answer
1k
views
Llist installed packages with their repository name, version, and architecture using zypper
zypper se -i shows installed packages, but unlike zypper pa the repo, arch, and version information is missing. Is there a command option that shows these bits?
1
vote
1
answer
2k
views
tar create: How to avoid to show the "tar: Removing leading `/' from member names" message in the terminal?
About the tar command
If is executed the command:
tar -czf numbers.tar.gz numbers
The numbers.tar.gz file is created - from the numbers - in the current directory
But for script purposes - by testing ...
- 1,786
0
votes
1
answer
2k
views
Why tar command uses gzip command through 'z' option?
In Linux Ubuntu about the 'tar' command for these versions:
tar -tzf /path/to/filename.tar.gz # Show the content
tar -xzf /path/to/filename.tar.gz # Extract the content
Observe both commands use ...
- 1,786
5
votes
1
answer
3k
views
curl: when use "--no-progress-meter" over "-sS"?
About curl about to hide the Progress Meter I found many answers through Stack Exchange branches doing mention of -s and -S or simply -sS where
-s hides the progress meter
-S only shows error ...
- 1,786
7
votes
1
answer
8k
views
curl: download file with the same name with "-O" but defining a specific path directory
With curl is possible do
curl http://somedomain.com/originalfilename.tar.gz -o newfilename.tar.gz
curl http://somedomain.com/originalfilename.tar.gz -o /other/path/newfilename.tar.gz
Therefore with -...
- 1,786
0
votes
2
answers
204
views
Effect of slash (/) suffixes on symlink names for `ls` with the `-F` option
By way of example, I have a directory structure like this:
$ \ls -F
dir/ lnk@
$ \ls -F dir
FILE
$ \ls -l lnk
lrwxrwxrwx 1 user group d Mon hh:mm lnk -> dir
My ls command is aliased. I am using \...
- 687
0
votes
1
answer
340
views
Remove options from command
My inputs are commands followed by an unrestricted number of single-letter options, e.g. command -abc. Neither the command nor the options take any arguments. My goal is to remove certain options.
...
- 111
0
votes
1
answer
618
views
How does "-" work in the "ssh-keygen -lf -" command?
I read this question
Get SSH server key fingerprint
In the answer and solution appears the following command (adapted here for presentation purposes)
ssh-keyscan 192.168.1.X | ssh-keygen -lf -
I ...
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