HCI command extensions for quick Process/Thread bouncing

I’m fond of this one.  😛

Absolutely.

Folks,

We have defined some functions in our Cloverleaf user account “hci” and “hcitest” to perform some of these tasks more easily with less typing.

We use the .profile.local.end file to store these functions.  You then invoke them at the shell command line.

Here are some samples to cycle a process; stop/start a thread; and do a purge cache of a process.  Hopefully they will prove useful.

function cycle {

       if -z $1 ; then

               echo “Syntax: cycle “;return

       fi

       if grep $1) ; then

               echo “$1 process not found”;return

       fi

       hcienginestop -p $1

       sleep 1

       hcienginerun -p $1

       echo “cycle $1 complete”

}

function purge {

       if -z $1 ; then

               echo “Syntax: purge “;return

       fi

       if grep $1) ; then

               echo “Process ($1) not found”;return

       fi

       hcicmd -p $1 -c ‘ . purgex’

       echo “purge $1 complete”

}

function bounce {

       if -z $1 ; then

               echo “Syntax: bounce “;return

       fi

       PROCESS=$(hciconnstatus|awk ‘$2 == Thread {print $1}’ Thread=$1)

       if -z $PROCESS ; then

               echo “Thread ($1) not found”;return

       fi

       hcicmd -p $PROCESS -c “$1 pstop”

       sleep 1

       hcicmd -p $PROCESS -c “$1 pstart”

       echo “bounce $1 complete”

}

Hi Bob,

We use tcsh here so we have .cshrc.local.end

Is there a way to use your functions with tcsh?

Greetings Michael,

I take it that you are running on Linux?  We run on AIX5.3 and use ksh shell.  In poking around the web, it appears that the C shell (csh) emulates the C programming language.  You would think that something like a function (or subroutine) could be invoked from a C shell?

Alas, I did not find any useful web links out there but then my search lasted only a half hour.

Does anyone on this Forum work with the C shell who could help out Michael?

May the silicon gods be merciful in your quest…

Thanks Bob.

I am on AIX.

Back in 1996 when I witnessed my first Cloverleaf install by Greg Wood,

I saw that he used tcsh. I think the hcispt1 account still uses it.

So I’ve used it ever since.

I love it because of the completion and /

features.

Anyhow, maybe I can get my Unix Admins to convert the scripts. Unfortunately it’s gonna cost me.

You should be able to run any script from any shell by adding the appropriate header. In this case, the header might be “#!/bin/csh”? Do a which “csh” from your command line.

Right, I could put those commands into a ksh script and exec it that way.

I liked the idea that I could do that as part of .cshrc.local.end

Right, I could put those commands into a ksh script and exec it that way.

I liked the idea that I could do that as part of .cshrc.local.end

You can write your own versions of the functions for tcsh and then put them into .tcshrc.local.end (or whatever file you want). This file is sourced (. .profile.local.end) by .profile when the hci user logs in.

I use the bash shell. Here are some example bash functions that I have in .profile.local.end:

It’s just a matter of looking up the function syntax for .tcsh.

here’s a nice shell script I got from Jerry. I modified it a bit.