lz: linux ls 变种 只显示大小和名称(包括目录)

本次输入法使用： 手心输入法 for Mac 1.0版

测试环境为：Ubuntu 14.14.2 LTS updates

测试时间为：2015年5月28日，感觉死亡将至的夜晚，独自一人坐在一个角落，戴着耳机盖着帽子，穿着衬衫的那一天，外面下着雨，不小不大，不紧不慢，却分外的让人不自然，写到这里放的歌是：苏运莹的《野子》

主要解决了特殊用法（为制定参数，. ，..，*的使用）

-d 检测是否为directory时，如果参数为空，也会被错误的认为目录，这是bash的一个诟病吗？应该吧，不过结合-z选项就可以解决。但是问题的关键是我以为-d是会识别的，其实我高估了-d，[see line 34-36]

function lz() {
    function du_dir() {
        echo -e "33[01;33m$133[00m" # $((RANDOM%6+1))
        (cd $1; ls -1 2>/dev/null | sed -e 's/^/"/' -e 's/$/"/'| xargs du -h -d 0 2>/dev/null)
    }
    function du_file() {
        (ls -lha $1 | awk '{print $5,$9}')
    }
    function getpath() { # support . and .. as the special path
            cd $1
            echo `pwd`
    }
    function usage(){
        echo -e " 33[01;37musage:33[00m le [dir]/[file] ..."
        echo " if no arguement is given, 'lz' will print the current working dir"
        echo " .(current dir), ..(parent dir), *(metachar) are supported"
        echo -e "
 -V/-h for this help page"
        echo -e " 
--------------------------------------------------
 lz v0.1 by Ray Lee - March 30, 2015"
        echo -e " updates:
  1.clone 'le' as 'lz', new feature added
  2.empty parameter doesn't work"
        echo -e " ^
 lz v0.2 by Ray Lee - may 28, 2015"
        echo -e " updates: 
  1.make the empty arg work, printing the current directory
  2.-V and -h works
  3.add comments for code block
  4.modify the help page"
    }
    default='.'
    args=($@)
    if [[ ${#args[@]} -gt 1 ]]; then
        ## the * meta means all the things in the current directory, length of it is gt 1 when current dir contains
        ## more than 1 thing, 1 if there is only one thing, le 1 when empty
28         ## 
        for each in ${args[@]}; do
            [ -d $each ] && du_dir `getpath $each` || du_file `getpath $each`
        done
    elif [  ! -z $1 ]; then
        ## The oddness of the -d option for file test is that it recognises the empty as a directory
34         ## So the -z should be used to make -d solid for empty args.
35         ## 
        if [ -d $1 ]; then # support . and .. as the special path
            du_dir `getpath $1`
        elif [[ $1 == '-V' ]]; then
            usage
        elif [[ $1 == '-h' ]]; then
            usage
        fi
    else
        du_dir `getpath "."`
    fi
}

Results：

 

Reference:

1. http://www.cnblogs.com/raybiolee/p/4240363.html