Skip to content

Latest commit

 

History

History
30 lines (22 loc) · 812 Bytes

'getopts'.md

File metadata and controls

30 lines (22 loc) · 812 Bytes
Raw

textcolor.sh

#!/bin/bash

# getopts OPTSTRING VARNAME [ARGS...]

# OPTSTRING - :ab:c 
# :  - hide errors (leading ':')
# a  - option -a no parameter (1 / 0)
# b: - option -b with parameter (trailing ':')
# c  - option -c no parameter (1 / 0)


usage() { echo "Usage: $0 [-c <color>] [-b <background>] <quoted or unquoted string>" 1>&2; exit 1; }

color=6   # default no -c option
back=0    # default no -b option

while getopts ":c:b:" opt; do # leading ':' - hide errors; trailing ':' - with parameter
    case $opt in
        c) color=$OPTARG;;
        b) back=$OPTARG;;
        *) usage;;
    esac
done

shift $((OPTIND-1)) # shifts out option arguments (in ':c:b:'), leaves '<string>'

echo $(tput setaf "$color"; tput setab "$back")${@}$(tput setaf 7; tput setab 0) # '$@ - all left arguments