filecheck

UNIX[1].shell范例精解(第4版)_code

#!/bin/tcsh -f
# Scriptname: filecheck
# Usage: filecheck filename
alias Usage 'echo "    Usage: $0 filename\!*" ; exit 1'
alias Error 'echo "    Error: \!* "; exit 2'
set file=$1
if ( $#argv == 0 ) then
   Usage
endif
if ( ! -e $file ) then
	Error "$file does not exist"
endif

if ( -d $file ) then
   echo "$file is a directory"
else if (-f $file) then 
   if ( -rx $file ) then      # nested if construct
      echo "You have read and execute permission on $file"
   endif
else
   print "$file is neither a plain file nor a directory."
endif