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 "\033[01;33m$1\033[00m" # $((RANDOM%6+1))
         (cd $; ls - >/dev/null | sed -e 's/^/"/' -e 's/$/"/'| xargs du -h -d  >/dev/null)
     }
     function du_file() {
         (ls -lha $ | awk '{print $5,$9}')
     }
     function getpath() { # support . and .. as the special path
             cd $
             echo `pwd`
     }
     function usage(){
         echo -e " \033[01;37musage:\033[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 "\n -V/-h for this help page"
         echo -e " \n--------------------------------------------------\n lz v0.1 by Ray Lee - March 30, 2015"
         echo -e " updates:\n  1.clone 'le' as 'lz', new feature added\n  2.empty parameter doesn't work"
         echo -e " ^\n lz v0.2 by Ray Lee - may 28, 2015"
         echo -e " updates: \n  1.make the empty arg work, printing the current directory\n  2.-V and -h works\n  3.add comments for code block\n  4.modify the help page"
     }
     default='.'
     args=($@)
     if [[ ${#args[@]} -gt  ]]; 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 $ ]; 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 $ ]; then # support . and .. as the special path
             du_dir `getpath $`
         elif [[ $ == '-V' ]]; then
             usage
         elif [[ $ == '-h' ]]; then
             usage
         fi
     else
         du_dir `getpath "."`
     fi
 }

Results：

Reference:

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