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Re^4: How to call Linux command sequentially

by mv.ashwin@gmail.com (Novice)
on Sep 13, 2011 at 09:22 UTC ( #925656=note: print w/replies, xml ) Need Help??


in reply to Re^3: How to call Linux command sequentially
in thread How to call Linux command sequentially

OK there was syntax problem i was able to run the command. But here comes another problem. The first command here creates the an environment, in that environment i need to execute the second command. Here nither system nor exec will do these. Untill I manually exit from environment the second command is not running. Once i exit from environment the second executes. But i need the second command to be executed in environment which was set by first command. Is it possible to do so? Please help!!!!
  • Comment on Re^4: How to call Linux command sequentially

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Re^5: How to call Linux command sequentially
by Corion (Pope) on Sep 13, 2011 at 09:25 UTC
Re^5: How to call Linux command sequentially
by graff (Chancellor) on Sep 13, 2011 at 09:33 UTC
    You could try something like:
    #!/usr/bin/perl use strict; my $shpid = open( SH, '|-', '/bin/bash' ) or die "Can't launch bash: $ +!\n"; my @command_list = ( "first_command args ...\n", "second_command args ...\n" ... ); for my $cmd ( @command_list ) { print SH $cmd; } print SH "exit\n"; waitpid( $shpid, 0 );
    If the list of commands actually includes things that change the shell environment for subsequent commands, that should work as intended.

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