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tests/jobs.sh: suppress error msg on noncompliant 'ps'

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This commit is contained in:
Martijn Dekker 2021-02-12 23:52:25 +00:00
parent dec10fee6a
commit 8c1e9971a7
1 changed files with 2 additions and 2 deletions
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4
src/cmd/ksh93/tests/jobs.sh
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@ -20,7 +20,7 @@ function err_exit
let Errors++
}
alias err_exit='err_exit $LINENO'
alias warning='err\_exit $((Errors--,LINENO))'
alias warning='err\_exit $((Errors--,LINENO)) warning:'
Command=${0##*/}
integer Errors=0
@ -79,7 +79,7 @@ kill %+ >out 2>&1 || err_exit "'kill %+' not working in script (got $(printf %q
# =====
# Before 2021-02-11, job control was deactivated in subshells
# https://www.mail-archive.com/austin-group-l@opengroup.org/msg06456.html
(sleep 1 & UNIX95=1 ps -o pid=,pgid= -p $!) | IFS=$' \t' read -r pid pgid
(sleep 1 & UNIX95=1 command -p ps -o pid=,pgid= -p $! 2>/dev/null) | IFS=$' \t' read -r pid pgid
if let "pid>0 && pgid>0" 2>/dev/null
then kill $pid
let "pgid == pid" || err_exit "background job run in subshell didn't get its own process group ($pgid != $pid)"