| 1 | package Psh::Builtins::Bg; |
| 2 | |
| 3 | require Psh::Util; |
| 4 | require Psh::Joblist; |
| 5 | |
| 6 | =item * C<bg [%JOB|COMMAND]> |
| 7 | |
| 8 | Put a job into the background. If JOB is omitted, uses the |
| 9 | highest-numbered stopped job, if any. |
| 10 | |
| 11 | If you specify a command instead of a job id it will execute |
| 12 | the command in the background. You can use this if you do not |
| 13 | want to type "command &". |
| 14 | |
| 15 | =cut |
| 16 | |
| 17 | sub bi_bg |
| 18 | { |
| 19 | my $arg = shift; |
| 20 | |
| 21 | if( ! Psh::OS::has_job_control()) { |
| 22 | Psh::Util::print_error_i18n('no_jobcontrol'); |
| 23 | return (0,undef); |
| 24 | } |
| 25 | |
| 26 | if (!defined($arg) || $arg eq '') { |
| 27 | ($arg)= Psh::Joblist::find_job(); |
| 28 | } else { |
| 29 | if( $arg !~ /^\%/) { |
| 30 | return Psh::evl($arg.' &'); |
| 31 | } |
| 32 | $arg =~ s/\%//; |
| 33 | |
| 34 | if ( $arg !~ /^\d+$/) { |
| 35 | ($arg)= Psh::Joblist::find_last_with_name($arg,0); |
| 36 | } |
| 37 | $arg-- if defined($arg); |
| 38 | } |
| 39 | return (0,undef) unless defined($arg); |
| 40 | |
| 41 | Psh::OS::restart_job(0, $arg); |
| 42 | |
| 43 | return (1,undef); |
| 44 | } |
| 45 | |
| 46 | 1; |