tests/tail-2/start-middle

   1 #!/bin/sh
   2 # Verify that tail works even when it's reading from a file
   3 # that is not at its beginning.  Based on a report from John Roll.
   4
   5 if test "$VERBOSE" = yes; then
   6   set -x
   7   tail --version
   8 fi
   9
  10 pwd=`pwd`
  11 tmp=tail-mid.$$
  12 trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0
  13 trap '(exit $?); exit' 1 2 13 15
  14
  15 framework_failure=0
  16 mkdir $tmp || framework_failure=1
  17 cd $tmp || framework_failure=1
  18
  19 (echo 1; echo 2) > k || framework_failure=1
  20
  21 if test $framework_failure = 1; then
  22   echo "$0: failure in testing framework" 1>&2
  23   (exit 1); exit 1
  24 fi
  25
  26 fail=0
  27
  28 sh -c 'read x; tail' < k > out || fail=1
  29 cat <<EOF > exp
  30 2
  31 EOF
  32
  33 cmp out exp || fail=1
  34 test $fail = 1 && diff out exp 2> /dev/null
  35
  36 (exit $fail); exit $fail