Unix Tip: IRIX: CHECK FOR NEW CONFIGS

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2919 - February 2, 2009

http://www.ugu.com/sui/ugu/show?tip.today

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IRIX: CHECK FOR NEW CONFIGS

SGI loves to try and simplify your life with chkconfig switches to toggle various services on and off. After each upgrade, DOUBLE check the chkconfig switches. If something doesn't work all of the sudden check here.

For instance, tape drives in IRIX are disabled by a default install. To enable a tape subsystem:

# chkconfig ts on

# /etc/init.d/ts start

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Unix Tip: OPERATING ON MULTIPLE FILES

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UNIX GURU UNIVERSE
UNIX HOT TIP

Unix Tip 2918 - February 1, 2009

http://www.ugu.com/sui/ugu/show?tip.today

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OPERATING ON MULTIPLE FILES

Have you ever felt the need to perform a set of operations on multiple files simultaneously???

Here is a solution for that.

For instance, if it is required to perform multiple operations like searching a string (using grep), and executing an awk or perl script etc, etc. on not just one file but a set of files, use the following commands at the unix prompt:

$<: foreach i (<file_list>)
? echo $i
? grep <search_pattern> $i > tmp
? awk -f awk_script tmp >> report
? ....
? ....
? end
$<:

The files list in the brackets can be either

* Specifically mentioned

* A unix variable which contains a list of file names. For instance, the variable "p" can be assigned all the files starting with string "data" as follows:
set p = (data*)
Other examples are:
set g = `grep -l "Startpoint" * `
or
set all = *
(This assigns all file names in the current directory to the variable "all" )

And its usage with the "foreach" command will be as follows:

$<: foreach i ($all)
.....
.....
end

This tip generously supported by: lakshmi@virtualipgroup.com

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==========================================================================
DISCLAIMER: All UNIX HOT TIPS ARE OWNED BY THE UNIX GURU UNIVERSE AND ARE
NOT TO BE SOLD, PRINTED OR USED WITHOUT THE WRITTEN CONSENT OF THE UNIX
GURU UNIVERSE. ALL TIPS ARE "USE AT YOUR OWN RISK". UGU ADVISES THAT
ALL TIPS BE TESTED IN A NON-PRODUCTION DEVELOPMENT ENVIRONMENT FIRST.

Unix Guru Universe - www.ugu.com - tips@ugu.com - Copyright 1994-2001
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