nixCraft

if [ `/opt/bin/ps ax | grep -c transmission` -gt 1 ]
then
echo "<td>Running</td>"
else
echo "<td>NOT running</td>"
fi


This is part of script that generate web site with some router statistics.
What I don't understand is the "-gt 1" part. What I think it does is decrease output of grep -c by one. But in different script I have "if [ $count -eq 0 ]"
whole script is here . If someone can point me to man page where I can find more info about it.
thanks
Peter

If output if greater than 1 process is running else it is not running

The -c switch for grep returns a count of lines that match the given pattern.

By saying
you're checking that there are at least two processes running with the pattern "transmission" in the output.

The -gt just means greater than. There are others of a similar form :
lt -- less than
eq -- equal to
ne -- not equal to

And so on and so forth.