Bash Template
#/bin/bash #set -x set -e usage() { cat <<EOF Usage: `basename $0` [OPTIONS] <non-option arguments> Purpose: xxxxxxxxxxxx Description: None Parameters: OPTIONS -i image -- images, registry:2 by default -p -- host port, 5000 by default <non-option arguments> Author: anor@xxxx.com Revision: 2016-07-04 Anor Initial Versiona EOF exit 1 } ############################################ #declare options string including optional #argument names separated from withsapce. #g_opt_name includs optional arg names #g_opt_<g_opt_name>, just holds optional arg value #for example, # Given optional args, -i, -p, # the option arg variables respectivly should be as, # g_opt_i # g_opt_p ############################################ declare -a g_opt_names=(i: p:) ############################################ #init_args() #initialize arguments before set them with #command line values ############################################ init_args() { g_opt_i="registry:2" # the registry image from hub.docker.com g_opt_p=5000 } ############################################ #parse_non_option_args() #parse non option arguments here ############################################ parse_non_option_args() { #//TODD add your code to parse non-option arguments here. return 0; } ############################################ #main() #add business logics in this [main] function ############################################ main() { #//TODD add your bussiness code here return 0; } #******************************************************* ######################################################## ### Common functions here ######################################################## #******************************************************* parse_args() { #check if showing usage if [ "$1" == "--help" ]; then usage; fi init_args parse_options "$@" parse_non_option_args "$@" } parse_options() { local opt_names="${g_opt_names[@]}" local opt_string="$(echo -e "$opt_names" | tr -d '[[:space:]]')" log "opt_string=$opt_string" if [ -n "$opt_names" ]; then while getopts $opt_string opt do for i in "${g_opt_names[@]}" do local opt_name=${i:0:1} local opt_var_name=g_opt_$opt_name case $opt in $opt_name ) if [ -z "$OPTARG" ] then eval $opt_var_name=1 else eval $opt_var_name=\"$OPTARG\" fi log "$opt_var_name=${!opt_var_name}" ;; h ) usage ;; \?) usage ;; esac done done fi } #Purpose: # echo log message # #Parameters: # @1.... -- log messages # log() { echo "[`date +'%Y-%m-%d %H:%M:%S'` $0]" "${@:1}" } _main() { #parse optional parse_args "$@" #main routine main "$@" #successful log log "Done!" } _main "$@"