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1

In the case below, the report command must always be executed but I need to get an exit status 1 if the test command fails:

test;report
echo $?
0

How can I do it in a single bash line without creating a shell script?

bash exit-status

share|improve this question

edited 2 hours ago

Jeff Schaller♦

45.8k1165150

asked 3 hours ago

EduardoEduardo

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1

In the case below, the report command must always be executed but I need to get an exit status 1 if the test command fails:

test;report
echo $?
0

How can I do it in a single bash line without creating a shell script?

bash exit-status

share|improve this question

edited 2 hours ago

Jeff Schaller♦

45.8k1165150

asked 3 hours ago

EduardoEduardo

1062

New contributor

Eduardo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

In the case below, the report command must always be executed but I need to get an exit status 1 if the test command fails:

test;report
echo $?
0

How can I do it in a single bash line without creating a shell script?

bash exit-status

share|improve this question

edited 2 hours ago

Jeff Schaller♦

45.8k1165150

asked 3 hours ago

EduardoEduardo

1062

New contributor

Eduardo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

test;report
echo $?
0

share|improve this question

edited 2 hours ago

Jeff Schaller♦

45.8k1165150

asked 3 hours ago

EduardoEduardo

1062

New contributor

Eduardo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 2 hours ago

Jeff Schaller♦

45.8k1165150

asked 3 hours ago

EduardoEduardo

1062

New contributor

Eduardo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 2 hours ago

Jeff Schaller♦

45.8k1165150

edited 2 hours ago

Jeff Schaller♦

45.8k1165150

asked 3 hours ago

EduardoEduardo

1062

New contributor

Eduardo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 3 hours ago

EduardoEduardo

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2 Answers
2

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3

What is a shell script except a file containing shell commands? You could pretend it's not a shell script and put it on one line with something like:

(test; r=$?; report; [ "$r" -gt 0 ] && exit 1; exit 0)

This exits the subshell with a 1 if the first command returned anything other than 0; otherwise, it returns 0.

For examples -- I'm just echoing something in lieu of running a real program:

$ (false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
1
$ (true; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
0
$ # example with an exit-status of 2:
$ (grep foo bar; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
grep: bar: No such file or directory
report
$ echo $?
1

If you regularly set the errexit shell option, you'd want to add in an override so that the subshell doesn't exit prematurely:

(set +o errexit; false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)

share|improve this answer

answered 2 hours ago

Jeff Schaller♦Jeff Schaller

45.8k1165150

add a comment | 

3

Save and reuse $?.

test; ret=$?; report; exit $ret

If you have multiple test commands and you want to run them all, but keep track of whether one has failed, you can use bash's ERR trap.

failures=0
trap 'failures=$((failures+1))' ERR
test1
test2
if ((failures == 0)); then
 echo "Success"
else
 echo "$failures failures"
 exit 1
fi

share|improve this answer

answered 2 hours ago

GillesGilles

553k13311341643

add a comment | 

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3

What is a shell script except a file containing shell commands? You could pretend it's not a shell script and put it on one line with something like:

(test; r=$?; report; [ "$r" -gt 0 ] && exit 1; exit 0)

This exits the subshell with a 1 if the first command returned anything other than 0; otherwise, it returns 0.

For examples -- I'm just echoing something in lieu of running a real program:

$ (false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
1
$ (true; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
0
$ # example with an exit-status of 2:
$ (grep foo bar; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
grep: bar: No such file or directory
report
$ echo $?
1

If you regularly set the errexit shell option, you'd want to add in an override so that the subshell doesn't exit prematurely:

(set +o errexit; false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)

share|improve this answer

answered 2 hours ago

Jeff Schaller♦Jeff Schaller

45.8k1165150

add a comment | 

3

What is a shell script except a file containing shell commands? You could pretend it's not a shell script and put it on one line with something like:

(test; r=$?; report; [ "$r" -gt 0 ] && exit 1; exit 0)

This exits the subshell with a 1 if the first command returned anything other than 0; otherwise, it returns 0.

For examples -- I'm just echoing something in lieu of running a real program:

$ (false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
1
$ (true; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
0
$ # example with an exit-status of 2:
$ (grep foo bar; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
grep: bar: No such file or directory
report
$ echo $?
1

If you regularly set the errexit shell option, you'd want to add in an override so that the subshell doesn't exit prematurely:

(set +o errexit; false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)

share|improve this answer

answered 2 hours ago

Jeff Schaller♦Jeff Schaller

45.8k1165150

add a comment | 

What is a shell script except a file containing shell commands? You could pretend it's not a shell script and put it on one line with something like:

(test; r=$?; report; [ "$r" -gt 0 ] && exit 1; exit 0)

This exits the subshell with a 1 if the first command returned anything other than 0; otherwise, it returns 0.

For examples -- I'm just echoing something in lieu of running a real program:

$ (false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
1
$ (true; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
0
$ # example with an exit-status of 2:
$ (grep foo bar; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
grep: bar: No such file or directory
report
$ echo $?
1

If you regularly set the errexit shell option, you'd want to add in an override so that the subshell doesn't exit prematurely:

(set +o errexit; false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)

share|improve this answer

answered 2 hours ago

Jeff Schaller♦Jeff Schaller

45.8k1165150

(test; r=$?; report; [ "$r" -gt 0 ] && exit 1; exit 0)

$ (false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
1
$ (true; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
report
$ echo $?
0
$ # example with an exit-status of 2:
$ (grep foo bar; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)
grep: bar: No such file or directory
report
$ echo $?
1

(set +o errexit; false; r=$?; echo report; [ "$r" -gt 0 ] && exit 1; exit 0)

share|improve this answer

answered 2 hours ago

Jeff Schaller♦Jeff Schaller

45.8k1165150

answered 2 hours ago

Jeff Schaller♦Jeff Schaller

45.8k1165150

answered 2 hours ago

Jeff Schaller♦Jeff Schaller

45.8k1165150

3

Save and reuse $?.

test; ret=$?; report; exit $ret

If you have multiple test commands and you want to run them all, but keep track of whether one has failed, you can use bash's ERR trap.

failures=0
trap 'failures=$((failures+1))' ERR
test1
test2
if ((failures == 0)); then
 echo "Success"
else
 echo "$failures failures"
 exit 1
fi

share|improve this answer

answered 2 hours ago

GillesGilles

553k13311341643

add a comment | 

3

Save and reuse $?.

test; ret=$?; report; exit $ret

If you have multiple test commands and you want to run them all, but keep track of whether one has failed, you can use bash's ERR trap.

failures=0
trap 'failures=$((failures+1))' ERR
test1
test2
if ((failures == 0)); then
 echo "Success"
else
 echo "$failures failures"
 exit 1
fi

share|improve this answer

answered 2 hours ago

GillesGilles

553k13311341643

add a comment | 

Save and reuse $?.

test; ret=$?; report; exit $ret

If you have multiple test commands and you want to run them all, but keep track of whether one has failed, you can use bash's ERR trap.

failures=0
trap 'failures=$((failures+1))' ERR
test1
test2
if ((failures == 0)); then
 echo "Success"
else
 echo "$failures failures"
 exit 1
fi

share|improve this answer

answered 2 hours ago

GillesGilles

553k13311341643

test; ret=$?; report; exit $ret

failures=0
trap 'failures=$((failures+1))' ERR
test1
test2
if ((failures == 0)); then
 echo "Success"
else
 echo "$failures failures"
 exit 1
fi

share|improve this answer

answered 2 hours ago

GillesGilles

553k13311341643

answered 2 hours ago

GillesGilles

553k13311341643

answered 2 hours ago

GillesGilles

553k13311341643