my system configuration Post: 302557579

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Top Forums Shell Programming and Scripting my system configuration Post 302557579 by Corona688 on Wednesday 21st of September 2011 03:33:07 PM

09-21-2011

Registered User

Some comments:

1) We often get the "linux newbie memory freakout" here. A new user may see "56M free" and panic -- rebooting obsessively when free gets low, plugging bizzare and harmful values into /proc/vm to "flush the cache", and sometimes even reformatting just to try and solve an imaginary memory leak. Any decently busy system converts 'free' to 'cache' in short order, which is fine -- cache is as good as free.

2) It'd be better to leave dmidecode out than demand random people run your untested script as root.

3) Run ifconfig with the full path, /sbin/ifconfig, so non-root users can find it.

4) Not everyone has java. Test if java exists before trying to get its version.

5) You can get disk information without root and fdisk, as well as tons of other stuff, via /sys:

Code:

# Sizes and models of all hard drives
TOTAL=0
for X in /sys/class/block/[sh]d[a-z]
do
        D=$(basename ${X})
        read TYPE < ${X}/removable
        read SIZE < ${X}/size
        read MODEL <"${X}/device/model"
        [ "$TYPE" = 0 ] || continue # Ignore removable drives
        set -- ${X}[1-9]* # Set $# to the number of partitions

        TOTAL=$((TOTAL + SIZE))
        echo "$D[1-$#]: $(((SIZE*512)/(1000*1000*1000)))GB $MODEL"
done

echo "Total: $(( (TOTAL*512)/(1000*1000*1000) )) GB"

# MAC addresses of all network cards
for DEV in /sys/class/net/*
do
        D=`basename $DEV`
        [ "$D" = "lo" ] && continue # Ignore loopback
        [ "$D" = "sit0" ] && continue # Ignore ipv6 tunnel

        read MAC < $DEV/address
        echo "$D mac $MAC"
done

# Get some DMI information without needing root
cat /sys/class/dmi/id/* 2>/dev/null

Last edited by Corona688; 09-21-2011 at 04:47 PM..

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LEARN ABOUT CENTOS

kitpost

KITSEND(1)						      General Commands Manual							KITSEND(1)

NAME

       kitpost - posts distribution kits

SYNOPSIS

       kitpost [ -hrV ] [ -H file ] [ -D desc ] [ -m dest1,dest2 ] [ kits ] [ newsgroups ]

DESCRIPTION

       Kitpost	posts  distribution kits made by makedist to some (source) newsgroups specified on the command line. If you do not specify any kit
       list, then all the kits are sent. Otherwise, only the specified kits will be (re)sent.

       A kit list may include ranges, 1-10 specifying kits 1 through 10, and 5- meaning kits 5 up to the last one. You may also specify  kit  num-
       bers by separating them with commas or spaces, and even mix with ranges, such as: 1 3 5-7 9.

       Kitpost ensures correct References: lines are inserted in your postings so that all parts but the first point to the root article. Threaded
       newsreaders and end-users traditionally appreciate that.

OPTIONS

       The following options are recognized by kitpost:

       -h	 Print help message and exit.

       -m dest1,destn
		 Sends kits by e-mail to the specified recipients. This option may be used in conjunction with newsgroup  posting.  It	is  mainly
		 intended  for	sites  where  direct  posting to a moderated newsgroup is not allowed by inews. You may thus send your kits to the
		 newsgroup moderator in a form that will ease the whole posting process.

       -r	 Signals a repost.

       -D description
		 Specify a description string that will be added to the subject line. Usually a brief sentence (less than, say, 40 characters).

       -H file	 Specify a file to be used as header introduction in the first part of your posting. Usually the root README file.

       -V	 Print version number and exit.

BUGS

       Article cross-referencing is properly set-up only when the whole package is (re)posted in one batch.

       It is not currently possible to set-up the article headers manually or better, interactively.

AUTHOR

       Raphael Manfredi <ram@hptnos02.grenoble.hp.com>

SEE ALSO

       makedist(1), kitsend(1).

									ram								KITSEND(1)