follow-slink

实战Linux编程的原代码,希望对学驱动的人能有所帮助

#!/bin/sh
# make sure ls -L always follows symlinks

if test "$VERBOSE" = yes; then
  set -x
  ls --version
fi

pwd=`pwd`
tmp=follow-sl.$$
trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0
trap '(exit $?); exit' 1 2 13 15

framework_failure=0
mkdir $tmp || framework_failure=1
cd $tmp || framework_failure=1
ln -s link link || framework_failure=1

# Make sure the symlink was created.
# `ln -s link link' succeeds, but creates no file on
# systems running some DJGPP-2.03 libc.
ls -F link > /dev/null || framework_failure=1

if test $framework_failure = 1; then
  echo 'failure in testing framework'
  (exit 1); exit
fi

fail=0

ls -L link 2> /dev/null && fail=1

(exit $fail); exit