All Questions
Tagged with options shell-script
41
questions
0
votes
0
answers
46
views
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 ...
- 229
8
votes
1
answer
894
views
Looking for a more permissive alternative to GNU getopt for wrapper script
I often find myself writing shell functions or shell scripts that are meant to be wrappers around other commands.
It is also frequent that I want such a wrapper to support a few flags/options. The ...
- 15.7k
-1
votes
1
answer
329
views
How to check for passed options using getopts in a POSIX shell? (Report, count, and discard.)
How to check for passed options using getopts (man page) in a POSIX shell? (Report, count, and discard.)
My idea is this: Many of my scripts take no options (not even -h for help, I am transitioning ...
- 29.1k
0
votes
2
answers
356
views
Error parsing arguments for options in script Unexpected option in Shell Script
I'm trying to parsearg arguments to pass options to the script.
but it is showing the following errors Unexpected option: -u in addition to looping below:
$ gitpratico -u "<usuario_github>&...
user569757
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
1
vote
1
answer
9k
views
What does the "+x" option in "bash +x script.sh" mean?
I know what bash -x does, but what does bash +x do?
Googling found no results and the manual also says nothing about it.
- 111
1
vote
1
answer
1k
views
Invoke a program in a Bash script with command line parameters stored in a variable
Is it possible to invoke some program in a Bash script with complete command line parameters (both the key and the value) stored in variables?
I use the following scanimage call in a script:
scanimage ...
- 113
1
vote
1
answer
2k
views
How to get option value $OPTARG correctly?
I would like to get an option value when launching a shcell. I wrote:
optstring=hcnxl:
V=0
while getopts $optstring opt; do
case $opt in
h) V=1 ;;
c) V=2 ;;
n) V=3 ;;
x) V=4 ;;
...
- 527
4
votes
3
answers
1k
views
Looping through command line parameter options until next parameter
In a new addition to a script I am working on, I want to loop through parameters associated with a flag until zsh reaches the next flag in the command. For instance, when the user enters the following:...
- 53
-1
votes
1
answer
731
views
Bash function with dry-run and exec options [closed]
Am writing a bash function to run rsync, with possibility of using --dry-run option and --exec option. Need some criticism improvements and additional checks.
Might not make much sense for the user ...
- 393
0
votes
1
answer
1k
views
grep flag to NOT ignore case
I have a simple script to search patterns in my code sources, named prgrep
#!/usr/bin/bash
grep -irnI --exclude-dir={.git,obj} --exclude=tags --color=auto "$@"
(The fact that it is a script ...
- 398
1
vote
1
answer
1k
views
If no argument is given to mandatory option, zparseopts takes next option as the argument
I am using zsh 5.4.2. The function that is causing issue is:
function zp () {
zparseopts -E -watch:=o_watch -show=o_show
echo "show : $o_show"
echo "watch ...
- 2,738
1
vote
1
answer
1k
views
How do I make an option (not argument of the option) mandatory in zparseopts?
In the example bellow:
function zp () {
zparseopts -E -walk:=o_walk
echo "walk: $o_walk"
}
I get the following output:
$ zp --walk "Walking"
walk : --walk ...
- 2,738
1
vote
1
answer
2k
views
How do I pass long-style command line options to a bash script using getopt?
I have this script that I have cobbled together from bits of lore I've gleaned from googling:
#!/usr/bin/env bash
usage() {
declare -r script_name=$(basename "$0")
echo """
Usage:
"${...
- 111
-1
votes
1
answer
62
views
Why does adding -prune to my sync script cause rsync to do a DRY-RUN?
I'm testing a script to do a by-directional sync of two directories intelligently using rsync.
Since I'm testing many of the rsync options are not applicable to the testing environment including the ...
