shell script

1:递归树形展示目录

ShowTab()
{
    whitespace=""
    if [ $# -gt 0 ] && [ $1 -gt 0 ]; then
        for index in $(seq 1 $1)
        do
            whitespace="${whitespace}    "
        done
    fi
    echo "${whitespace}"
}

ShowDir()
{
    #if [ $# == 0 ]; then
    #    echo "no argument,exit!"
    #elif [ ! -e $1 ]; then
    #    echo "filepath $1 is invalid"
    if [ -d $1 ]; then
        echo "$(ShowTab $2)$1"
        argLs=$(ls $1)
        for filename in ${argLs}
        do
            ShowDir $1/${filename} $(($2+1))
        done
    elif [ -f $1 ]; then
        echo "$(ShowTab $2)$1"
    fi
}

paramOne=""
if [ $# == 0 ] ; then
    paramOne=$(pwd)
else
    paramOne=$1
fi

if [ ! -e ${paramOne} ]; then
    echo "arg1: ${paramOne} is not exist"
    exit 0
fi

ShowDir ${paramOne} 0

效果图：