改后的 shell script 如下：
  （如果命令路径和你机器上的不一样，改成一样的就行了）

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#!/bin/sh

# This Shell Script can change UPPER-CASE filename to low-case filename.

# init the vars!

error=0;count=0
number=$(echo $* | /usr/bin/wc -w)

# end of the "init the vars"!

# process the parameter(s)!

if [ "$1" = "-h" -o "$1" = "--help" ]; then
 echo "Usage: $0 [PATH] [FILENAME]..."
 echo "Description: Change \"FILENAME\" to \"filename\"!"
 echo ""
 echo "  -h, --help               display this info and exit"
 echo "  -v, --version            display version info and exit"
 echo ""
 echo "Report bugs to <sea___sky@sina.com>."
 echo "PS: I think U can modify it by nothing! It's just a shell script! ;-)"
 exit 0
fi

if [ "$1" = "-v" -o "$1" = "--version" ];then
 echo "upks2lowks (a tool form my file-utils) ver0.1a"
 echo "Written by Juner.L"
 echo ""
 echo "Copyright (C) Juner"
 echo "This is free software; see the source for copying conditions.  There is NO"
 echo "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
exit 0
fi

# end of the "process the parameter(s)"!

# working part!

if [ -z "$1" ]; then
 /usr/bin/printf "\a"
 echo "Just put the \"FILENAME\" follow the command!"
else
 for i in $*
 do
   declare -x filez=$(echo $i | /bin/awk BEGIN'{FS="/"} {print $NF}')
   pathz=$(echo $i | /bin/awk BEGIN'{FS=ENVIRON["filez"]} {print $1}')
   if [ -e "$i" -a -w "$i" ]; then
     file=$(echo $filez | /usr/bin/tr "[A-Z]" "[a-z]")

#不好意思，刚发帖的时候直接把上面的粘贴过来，把 "$i" 改成 "$filez" 给忽略了，我现在改过来（不过下边的那个没错）

     if [ "$filez" = "$file" ]; then
       echo "The file \"$i\" is already lowcased!"
       count=$(/usr/bin/expr 1 + $count)
     else
       echo "$pathz$filez => $pathz$file"
       /bin/mv -f $pathz$filez $pathz$file 2> /dev/null
     fi
   else
   echo "warning: file \"$i\" not exist OR you have no \"w\" right to file!"
   fi
 done
 if [ "$number" -eq "$count" ]; then
   echo "    all file(s) is lowcased!"
 else
   echo "    $count file(s) already lowcased!"
 fi
fi

# end of the "working part"!
--------------------------------------

另一个文件也是这么改，道理是一样的。

--------------------------------------
#!/bin/sh

# This Shell Script can change low-case filename to UPPER-CASE filename.

# init the vars!

error=0;count=0
number=$(echo $* | /usr/bin/wc -w)

# end of the "init the vars"!

# process the parameter(s)!

if [ "$1" = "-h" -o "$1" = "--help" ]; then
 echo "Usage: $0 [path] [filename]..."
 echo "Description: Change \"filename\" to \"FILENAME\"!"
 echo ""
 echo "  -h, --help               display this info and exit"
 echo "  -v, --version            display version info and exit"
 echo ""
 echo "Report bugs to <sea___sky@sina.com>."
 echo "PS: I think U can modify it by nothing! It's just a shell script! ;-)"
 exit 0
fi

if [ "$1" = "-v" -o "$1" = "--version" ];then
 echo "lowks2upks (a tool form my file-utils) ver0.1a"
 echo "Written by Juner.L"
 echo ""
 echo "Copyright (C) Juner"
 echo "This is free software; see the source for copying conditions.  There is NO"
 echo "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
exit 0
fi

# end of the "process the parameter(s)"!

# working part!

if [ -z "$1" ]; then
 /usr/bin/printf "\a"
 echo "Just put the \"filename\" follow the command!"
else
 for i in $*
 do
   declare -x filez=$(echo $i | /bin/awk BEGIN'{FS="/"} {print $NF}')
   pathz=$(echo $i | /bin/awk BEGIN'{FS=ENVIRON["filez"]} {print $1}')
   if [ -e "$i" -a -w "$i" ]; then
     file=$(echo $filez | /usr/bin/tr "[a-z]" "[A-Z]")
     if [ "$filez" = "$file" ]; then
       echo "THE FILE \"$i\" IS ALREADY UPPERCASED!"
       count=$(/usr/bin/expr 1 + $count)
     else
       echo "$pathz$filez => $pathz$file"
       /bin/mv -f $pathz$filez $pathz$file 2> /dev/null
     fi
   else
   echo "WARING: FILE \"$i\" NOT EXIST or YOU HAVE NO \"w\" RIGHT TO FILE!"
   fi
 done
 if [ "$number" -eq "$count" ]; then
   echo "    ALL FILE(S) IS UPPERCASED!"
 else
   echo "    $count FILE(S) ALREADY UPPERCASED!"
 fi
fi

# end of the "working part"!
--------------------------------------

   但是，"declare -x filez=$(echo $i | /bin/awk BEGIN'{FS="/"} {print $NF}')" 一句中的 "declare" 在 cygwin 下的 sh 就认不出来了，我不知道其他版本的会不会有问题（我用的是 Red Hat 6.2）。其实，如果不行也可以把"declare -x " 换成 " && export filez " 就行了。