Re^2: How to know if a perl script is put in the background

I created a small sample for you below. This behaves the same way ..
OS: Linux 2.6.9-67.0.20 (SCL - Scientific Linux 4)
Shell: bash
Perl: 5.8.5

      1 #!/usr/bin/perl
      2
      3 use strict;
      4 use warnings;
      5
      6 print "# Start script\n";
      7 print "\n    -> Waiting 2 seconds\n";
      8 sleep(2);
      9 print "\n    -> Waiting 2 seconds\n";
     10 sleep(2);
     11 print "# Exiting .. \n";
[download]

Comment on Re^2: How to know if a perl script is put in the background Download Code

Replies are listed 'Best First'.
Re^3: How to know if a perl script is put in the background by almut (Canon) on Nov 18, 2008 at 17:12 UTC
Can't reproduce it, though I'm also using Linux and bash. With your sample code I'm getting something like: `$ ./724323.pl & [2] 10620` [download] (no further output) `$ ps x \| grep 724323 10620 pts/1 T 0:00 /usr/bin/perl ./724323.pl` [download] (the 'T' indicates that the script has been stopped) `$ fg ./724323.pl # Start script -> Waiting 2 seconds -> Waiting 2 seconds # Exiting ..` [download] (after foregrounding it, output continues normally)	[reply] [d/l] [select]

Replies are listed 'Best First'.

Re^3: How to know if a perl script is put in the background
by almut (Canon) on Nov 18, 2008 at 17:12 UTC

Can't reproduce it, though I'm also using Linux and bash. With your sample code I'm getting something like:

$ ./724323.pl &
[2] 10620
[download]

(no further output)

$ ps x | grep 724323
10620 pts/1    T      0:00 /usr/bin/perl ./724323.pl
[download]

(the 'T' indicates that the script has been stopped)

$ fg
./724323.pl
# Start script

    -> Waiting 2 seconds

    -> Waiting 2 seconds
# Exiting ..
[download]

(after foregrounding it, output continues normally)

[reply]
[d/l]
[select]