tests/lastpipe.tests

   1 binfalse()
   2 {
   3         $binfalse || return 1   # normalize return value
   4 }
   5
   6 if [ -x /usr/bin/true ]; then
   7         bintrue=/usr/bin/true
   8 elif [ -x /bin/true ]; then
   9         bintrue=/bin/true
  10 else
  11         bintrue=true
  12 fi
  13 if [ -x /usr/bin/false ]; then
  14         binfalse=/usr/bin/false
  15 elif [ -x /bin/false ]; then
  16         binfalse=/bin/false
  17 else
  18         binfalse=true
  19 fi
  20
  21 shopt -s lastpipe
  22
  23 unset foo bar
  24 echo a b c | read foo
  25 echo after 1: foo = $foo
  26
  27 unset tot
  28 declare -i tot
  29 printf "%d\n" 1 2 3 | while read foo; do tot+=$foo; done
  30 echo after 2: tot = $tot
  31
  32 unset bar
  33 echo g h i | bar=7
  34 echo after: $bar
  35
  36 unset foo last
  37 printf "%s\n" a b c | while read foo; do last=$foo; done
  38 echo last = $last
  39
  40 exit 142 | false
  41 echo $? -- ${PIPESTATUS[@]}
  42
  43 true | false | $bintrue
  44 echo $? -- ${PIPESTATUS[@]}
  45
  46 true | $bintrue | false
  47 echo $? -- ${PIPESTATUS[@]}
  48
  49 set -o pipefail
  50 true | $bintrue | false
  51 echo $? -- ${PIPESTATUS[@]}
  52
  53 true | binfalse | true
  54 echo $? -- ${PIPESTATUS[@]}
  55 set +o pipefail
  56
  57 ${THIS_SH} ./lastpipe1.sub
  58 echo lastpipe1.sub returns $?