#!/bin/sh# make sure ls and `ls -R' do the right thing when invoked with no arguments.if test "$VERBOSE" = yes; then  set -x  ls --versionfipwd=`pwd`tmp=no-args.$$trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0trap '(exit $?); exit' 1 2 13 15framework_failure=0mkdir $tmp || framework_failure=1cd $tmp || framework_failure=1mkdir -p dir/subdir || framework_failure=1touch dir/subdir/file2 || framework_failure=1ln -s f symlink || framework_failure=1cat > exp <<\EOF || framework_failure=1direxpoutsymlinkEOFif test $framework_failure = 1; then  echo 'failure in testing framework'  (exit 1); exitfifail=0ls > out || fail=1cmp out exp || fail=1test $fail = 1 && diff out exp 2> /dev/nullcat > exp <<\EOF.:direxpoutsymlink./dir:subdir./dir/subdir:file2EOFls -R > out || fail=1cmp out exp || fail=1test $fail = 1 && diff out exp 2> /dev/null(exit $fail); exit