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getoptsとset -xのいい関係

Posted at

getoptsで引数にvのときに
set -xとしておくと良いかんじに
出力の詳細がわらわらでて、-v感を
お手軽に実現できて大変よろしい

getopts_x.sh
#!/bin/sh

usage(){
    cat << EOF 
$(basename $0) is useful script!
this is usage.
EOF
exit 2
}

while getopts hv OPT 
do
   case $OPT in
        h)  usage
            ;;  
        v)  set -x
            ;;  
        \?) usage
            ;;  
    esac
done

shift $((OPTIND - 1)) 

getopts周りの良い記事は
bash によるオプション解析

usage書くのも良い習慣になるので
使いやすいシェルスクリプトを書く

usageは習慣として man コマンドで出力される形式を真似ている
スクリプト見るのも使うのもLinux上だと思うので

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