recursive

实战Linux编程的原代码,希望对学驱动的人能有所帮助

#!/bin/sh
# 4.1.1 and 4.1.2 had a bug whereby some recursive listings
# didn't include a blank line between per-directory groups of files.

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

. $srcdir/../envvar-check

pwd=`pwd`
tmp=recursive.$$
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

mkdir x y a b c a/1 a/2 a/3 || framework_failure=1
touch f a/1/I a/1/II || framework_failure=1

if test $framework_failure = 1; then
  echo "$0: failure in testing framework" 1>&2
  (exit 1); exit
fi

fail=0

# This first example is from Andreas Schwab's bug report.
ls -R1 a b c > out || fail=1
cat <<EOF > exp
a:
1
2
3

a/1:
I
II

a/2:

a/3:

b:

c:
EOF

cmp out exp || fail=1
test $fail = 1 && diff out exp 2> /dev/null

rm -rf out exp
ls -R1 x y f > out || fail=1
cat <<EOF > exp
f

x:

y:
EOF

cmp out exp || fail=1
test $fail = 1 && diff out exp 2> /dev/null

(exit $fail); exit