Bash Scripts

Question from Pastebin

#!/bin/bash

IPS=$(ifconfig | awk '/inet/ { print $2 }' | awk -F ":" '{ print $2 }')

NUMIPS=$(echo $IPS | wc -w)

COUNT=1
for i in $IPS
do
  export IP$COUNT=$i
  COUNT=`expr $COUNT + 1`
done

# -----------------
# I need to display all ips like this to user:
#
# 1. 123.123.123.123
# 2. 22.22.22.22
# 3. 32.32.32.222
#
# Please choose which IP address to use:
# Prompt user here

< planetxm> on Efnet #debian 02:33, 25 Feb 2005 (CET)

Answer

#!/bin/bash

# IPS=$(ifconfig | awk '/inet/ { print $2 }' | awk -F ":" '{ print $2 }')
IPS="192.168.23.5 47.45.56.11 189.67.24.21"
count=1

for IP in $IPS;
do
IP[$count]=$IP;
echo "Found IP $count - ${IP[count]}";
count=`echo $count+1 | bc`
done


read -p "Which IP do you want to use? (number)" choice

IPCHOICE=${IP[$choice]}
echo "Your choice was $choice - Setting IP to $IPCHOICE "


# ifconfig ...

mutante 02:33, 25 Feb 2005 (CET)

Schwanzersatzfaktor-Berechnung

Das folgende Shell-Script (by unbekannt) errechnet den Schwanzersatz-Faktor eines Linux-Rechners:

#!/bin/sh
LC_ALL=C
echo `uptime|grep days|sed 's/.*up \([0-9]*\) day.*/\1\/10+/'; \
cat /proc/cpuinfo|grep MHz|awk '{print $4"/30 +";}'; free|grep '^Mem' \
|awk '{print $3"/1024/3+"}'; df -P -k -x nfs | grep -v 1k \
| awk '{if ($1 ~ "/dev/(scsi|sd)"){ s+= $2} s+= $2;} END \
{print s/1024/50"/15+70";}'`|bc|sed 's/\(.$\)/.\1cm/'

from [1]

see also Schwanzersatzfaktor

For each file or directory

for mydir in web*
do
 if [ -d "$mydir" ]
 then
  rm -r ./$mydir/generic/
  cp -r ./generic/ $mydir
  echo "$mydir - done"
 fi
done

see also [2]

Don't do this at home, kids:

bash fork-bomb (will turn your computer into a bomb). may be prevented by using ulimits or other stuff.

:(){(:&:)};: