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实战Linux编程的原代码,希望对学驱动的人能有所帮助

#!/bin/sh
# Exercise a bug that was fixed in 4.0s.
# Before then, rm would fail occasionally, sometimes via
# a failed assertion, others with a seg fault.

. $srcdir/../expensive

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

pwd=`pwd`
t0=`echo "$0"|sed 's,.*/,,'`.tmp;tmp=$t0/$$
trap 'status=$?; cd $pwd; rm -rf $t0 || exit $?; exit $status' 0
trap 'exit $?' 1 2 13 15

framework_failure=0
mkdir -p $tmp || framework_failure=1
cd $tmp

# Create a hierarchy with 3*26 leaf directories, each at depth 153.
echo "$0: creating 78 trees, each of depth 153; this will take a while..." >&2
y=`seq 1 150|tr -sc '\n' y|tr '\n' /`
for i in 1 2 3; do
  for j in a b c d e f g h i j k l m n o p q r s t u v w x y z; do
    mkdir -p t/$i/$j/$y || framework_failure=1
  done
done

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

fail=0

rm -r t || fail=1

(exit $fail); exit