61 lines
1,018 B
Text
61 lines
1,018 B
Text
binfalse()
|
|
{
|
|
$binfalse || return 1 # normalize return value
|
|
}
|
|
|
|
if [ -x /usr/bin/true ]; then
|
|
bintrue=/usr/bin/true
|
|
elif [ -x /bin/true ]; then
|
|
bintrue=/bin/true
|
|
else
|
|
bintrue=true
|
|
fi
|
|
if [ -x /usr/bin/false ]; then
|
|
binfalse=/usr/bin/false
|
|
elif [ -x /bin/false ]; then
|
|
binfalse=/bin/false
|
|
else
|
|
binfalse=true
|
|
fi
|
|
|
|
shopt -s lastpipe
|
|
|
|
unset foo bar
|
|
echo a b c | read foo
|
|
echo after 1: foo = $foo
|
|
|
|
unset tot
|
|
declare -i tot
|
|
printf "%d\n" 1 2 3 | while read foo; do tot+=$foo; done
|
|
echo after 2: tot = $tot
|
|
|
|
unset bar
|
|
echo g h i | bar=7
|
|
echo after: $bar
|
|
|
|
unset foo last
|
|
printf "%s\n" a b c | while read foo; do last=$foo; done
|
|
echo last = $last
|
|
|
|
exit 142 | false
|
|
echo $? -- ${PIPESTATUS[@]}
|
|
|
|
true | false | $bintrue
|
|
echo $? -- ${PIPESTATUS[@]}
|
|
|
|
true | $bintrue | false
|
|
echo $? -- ${PIPESTATUS[@]}
|
|
|
|
set -o pipefail
|
|
true | $bintrue | false
|
|
echo $? -- ${PIPESTATUS[@]}
|
|
|
|
true | binfalse | true
|
|
echo $? -- ${PIPESTATUS[@]}
|
|
set +o pipefail
|
|
|
|
${THIS_SH} ./lastpipe1.sub
|
|
echo lastpipe1.sub returns $?
|
|
|
|
${THIS_SH} ./lastpipe2.sub
|
|
|