This code snippet processes command line arguments and assigns values to variables based on the provided options. It supports options like -o (for output), -ttl (for time to live), and their corresponding long forms (--output, --ttl). It also handles

bash argument parsing

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URL=$1
shift 1

while [ "$#" -gt 0 ]; do
  case "$1" in
    -o) OUTPUT="$2"; shift 2;;
    -ttl) TTL="$2"; shift 2;;

    --output=*) OUTPUT="${1#*=}"; shift 1;;
    --ttl=*) TTL="${1#*=}"; shift 1;;
    --output|--ttl) echo "$1 requires an argument" >&2; exit 1;;

    -*) echo "unknown option: $1" >&2; exit 1;;
    # *) echo "$1"; shift 1;;
    *) shift 1;;
  esac
done

Associated Context
Type	Code Snippet ( .dart )
Associated Tags	`Option flag (-ttl)` `Duration parameter` `Script execution` `Option flag (--output)` `Command line arguments` `System management` `URL parsing` `Command-line interface` `Unknown option handling` `Output variable` `bash` `Shift command` `Error handling` `Option flag (-o)` `linux` `Option flag (--ttl)` `URL command` `Output file` `unix` `Argument validation` `Shell scripting` `TTL configuration`
💡 Smart Description	This code checks if a given URL is in the format "URL=$1" and sets TTL to $2, then prints an error message. If it does not exist, it exits with no output or invalid argument. This code snippet processes command line arguments and assigns values to variables based on the provided options. It supports options like -o (for output), -ttl (for time to live), and their corresponding long forms (--output, --ttl). It also handles
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Related Links	https://www.gnu.org/software/bash/manual/html_node/Conditional-Constructs.html https://www.shellscript.sh/variables1.html https://www.hackerearth.com/practice/algorithms/string-algorithm/basics-of-string-manipulation/tutorial/ https://www.geeksforgeeks.org/data-structures/linked-list/ https://www.geeksforgeeks.org/ https://www.tutorialspoint.com/unix_commands/shift.htm https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html https://www.shellscript.sh/loops.html https://www.gnu.org/software/bash/manual/html_node/Command-Substitution.html https://www.geeksforgeeks.org/what-is-linked-list/ https://www.shellscript.sh/test.html
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borestad/bash argument parsing.md

bash argument parsing

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