into-self-3

来自「实战Linux编程的原代码,希望对学驱动的人能有所帮助」· 代码 · 共 41 行

#!/bin/sh
# move a directory into itself, with a twist

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

dir1=is3-dir1
dir2=is3-dir2

framework_failure=0
rm -rf $dir1 $dir2 || framework_failure=1
mkdir $dir1 $dir2 || framework_failure=1

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

# Make sure we get English translations.
. $srcdir/../lang-default

# This mv command should exit nonzero.
mv $dir1 $dir2 $dir2 > out 2>&1 && fail=1

sed \
   -e "s,mv:,XXX:,g" \
   -e "s,$dir2,ZZZ,g" \
  out > out2

cat > exp <<\EOF
XXX: cannot move `ZZZ' to a subdirectory of itself, `ZZZ/ZZZ'
EOF

cmp out2 exp || fail=1

rm -fr out out2 exp $dir1 $dir2

exit $fail