makedir

早期freebsd实现

#!/bin/sh
# : makedir.SH,v 24920Revision: 4.0.1.1 24920Date: 92/06/08 14:24:55 $
# 
# $Log:	makedir.SH,v $
# Revision 4.0.1.1  92/06/08  14:24:55  lwall
# patch20: SH files didn't work well with symbolic links
# 
# Revision 4.0  91/03/20  01:27:13  lwall
# 4.0 baseline.
# 
# 

export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0; kill $$)

case $# in
  0)
    /bin/echo "makedir pathname filenameflag"
    exit 1
    ;;
esac

: guarantee one slash before 1st component
case $1 in
  /*) ;;
  *)  set ./$1 $2 ;;
esac

: strip last component if it is to be a filename
case X$2 in
  X1) set `/bin/echo $1 | /usr/bin/sed 's:\(.*\)/[^/]*$:\1:'` ;;
  *)  set $1 ;;
esac

: return reasonable status if nothing to be created
if test -d "$1" ; then
    exit 0
fi

list=''
while true ; do
    case $1 in
    */*)
	list="$1 $list"
	set `echo $1 | /usr/bin/sed 's:\(.*\)/:\1 :'`
	;;
    *)
	break
	;;
    esac
done

set $list

for dir do
    /bin/mkdir $dir >/dev/null 2>&1
done