All Questions
15
questions
-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
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
2
votes
1
answer
25k
views
how to properly parse shell script flags and arguments using getopts
I'm using this :
for example ./imgSorter.sh -d directory -f format
the scripts' content is :
#!/bin/bash
while getopts ":d:f:" opt; do
case $opt in
d)
echo "-d was triggered with $...
- 123
3
votes
2
answers
1k
views
Can a bash array be used in place of eval set -- "$params"?
I'm taking a look at the optparse library for bash option parsing, specifically this bit in the generated code:
params=""
while [ $# -ne 0 ]; do
param="$1"
shift
case "$param" in
--my-...
- 36.8k
2
votes
3
answers
6k
views
How to extract unknown arguments within a shell script?
I have a shell script that accepts a variety of options, some with arguments, some without, some short, some long. It should handle some of these options itself and pass on the rest it does not know ...
- 1,448
4
votes
1
answer
519
views
Why do some utilities parse operands before options?
According to several sources, the UNIX utility guidelines specify that operands should always be processed after options:
utility_name[OPTIONS][operands...]
Some older UNIX utilities are known to ...
- 437
3
votes
1
answer
2k
views
Strange leading whitespace in OPTARG when using getopts
I spent quite a while researching the problem I encountered but none of the getopts tutorial say anything about the leading whitespace in OPTARG when using getopts.
In bash(on Ubuntu and OSX), ...
- 153
15
votes
1
answer
52k
views
Provide two arguments to one option using getopts
In below code when I give option r then getopts requires one arguments:
while getopts ":hr::l:" opt; do
case $opt in
r ) echo "Run Numbers - argument = $OPTARG " ;;
l ) echo "...
- 275
2
votes
2
answers
1k
views
Simpler processing of shell script options
I'm looking for way to process shell script arguments that is cleaner and more "self documenting" than getopt/getopts.
It would need to provide...
Full support of long options with or without a ...
- 2,262
74
votes
5
answers
64k
views
getopt, getopts or manual parsing - what to use when I want to support both short and long options?
Currently I'm writing a Bash script which has the following requirements:
it should run on a wide variety of Unix/Linux platforms
it should support both short and (GNU) long options
I know that ...
- 2,002
25
votes
6
answers
119k
views
How can I detect that no options were passed with getopts?
I have this code -
#getoptDemo.sh
usage()
{
echo "usage: <command> options:<w|l|h>"
}
while getopts wlh: option
do
case $option in
(w)
name='1';;
...
- 1,115
7
votes
2
answers
7k
views
Getopts option processing, Is it possible to add a non hyphenated [FILE]?
I'm using getopts for all of my scripts that require advanced option parsing, and It's worked great with dash. I'm familiar with the standard basic getopts usage, consisting of [-x] and [-x OPTION]. ...
- 4,949
26
votes
4
answers
51k
views
How do I handle switches in a shell script?
Are there some built-in tools that will recognize -x and --xxxx as switches (flags or "boolean options", rather than "ordinary arguments"), or do you have to go through all the ...
- 14.5k
3
votes
1
answer
5k
views
How to run a specified codeblock with getopts when no options or arguments are supplied?
So I am writing a script that mixes options with arguments with options that don't. From research I have found that getopts is the best way to do this, and so far it has been simple to figure out and ...
- 2,644
3
votes
2
answers
8k
views
How to catch optioned and non optioned arguments correctly?
I want to write a shell script which will take some arguments with some options and print that arguments. Suppose the name of that script is abc.ksh. Usage of that script is -
./abc.ksh -[a <arg>...
- 696