100 lines
1.7 KiB
Perl
Executable File
100 lines
1.7 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# Josh Holtrop
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# 2006-05-05
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use strict;
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sub usage
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{
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print "Usage: $0 [options] command [args]\n";
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print "Options:\n";
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print " -q Run <command> on hosts sequentially (default in parallel)\n";
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print " -s<ssh> Use <ssh> instead of 'ssh' for a remote shell program\n";
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print " -u<user> Use username <user> instead of your own\n";
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print " -h<hostlist> The hosts to run the command on, comma-separated\n";
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print " If the -h option is not given, the host list is\n";
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print " read from standard input, one host per line\n";
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exit(42);
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}
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my $ssh = 'ssh';
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my $user = '';
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my $seq = 0;
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my @hosts = ();
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my @command = ();
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for (my $i = 0; $i <= $#ARGV; $i++)
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{
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if ($ARGV[$i] eq '-q')
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{
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$seq = 1;
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}
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elsif ($ARGV[$i] =~ /^-s(.*)$/)
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{
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if (length($1) > 0)
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{
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$ssh = $1;
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}
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else
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{
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usage() if ($i == $#ARGV);
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$ssh = $ARGV[++$i];
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}
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}
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elsif ($ARGV[$i] =~ /^-h(.*)$/)
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{
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if (length($1) > 0)
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{
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@hosts = split(/,/, $1);
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}
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else
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{
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usage() if ($i == $#ARGV);
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@hosts = split(/,/, $ARGV[++$i]);
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}
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}
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elsif ($ARGV[$i] =~ /^-u(.*)$/)
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{
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if (length($1) > 0)
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{
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$user = $1;
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}
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else
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{
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usage() if ($i == $#ARGV);
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$user = $ARGV[++$i];
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}
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}
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else
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{
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# We've reached the command
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@command = splice(@ARGV, $i);
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last;
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}
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}
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$user .= '@' if ($user ne '');
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usage() if ($#command < 0);
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if ($#hosts < 0)
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{
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# Read hosts from stdin
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while (my $host = <STDIN>)
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{
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chomp($host);
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push(@hosts, $host);
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}
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}
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foreach my $host (@hosts)
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{
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my $f = $seq ? 0 : fork();
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$f || system($ssh, "$user$host", @command);
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exit(0) unless ($f || $seq); # Exit if not parent and not sequential
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}
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while (wait() != -1) {} # Wait for all children to exit
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exit(0);
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