Felipe Cruz

Using Awk and Bash to create a network mapper

Below you will find a simple script made with awk and bash to create network maps.

The script basically needs to know the base ip address and the range of ips to explore and it will try to ping every single ip. If an ip address is alive then it will be added to the map file.

The script generates a mapfile.txt archive with the resulting network map.

Its useful either to understand how you can use the powerful awk with bash scripting or simply as a network tool.

The Script Below:

# - IP MAPPER BY FELIPE CRUZ
baseip="10.0.0."
range=256 # - Number of ips to trace
cont=1
echo "Starting Mapping Process, this may take a while ..."
echo "MAP FILE will be saves in ./mapfile.txt"
while [ $cont -lt $range ]; do

        res=`ping -c 1 -W 1 $baseip$cont | sed '1d'| awk '{printf "%1-s",$6}'`
        #echo $res     
        process=` echo $res | awk -F"=" '{printf "%1-s",$1}'`
        if [ "$process" ==  "ttl" ]; then
                echo "IP $baseip$cont IS ALIVE!"
                echo "IP $baseip$cont IS ALIVE" >> ./mapfile.txt
        fi
        let cont=cont+1
done

Bash Script for FTP uploads / backups

The following is a fully functional backup script programmed fully on Bash

As you know bash can be a little picky with certain spaces, so please try and not change the script much unless you know what you are doing.
You need to create a file with the source below and give execution permissions.

For example:
touch script.sh

then add the source code with VI or any editor and finally

chmod a+x script.sh

You are free to use the script, in combination with the crontab you can automate you server to upload any specific files or folders you might need to back up to a remote ftp server. I currently use this same script on multiple servers with great success.

I would appreciate you leaving my name on the Script ( ego talking )

The Script Below:

# =====================================
# SCRIPT by Felipe Cruz for SHDaemon.com
# please respect the reference above
# =====================================

# -- CONFIGURE VALUES --
ftpserv="10.0.0.1"    # - Ftp server ip
ftpusr="ftpuser"        # - ftp user
ftppass="mypass"  # - ftp password
remotefolder=""       # - remote storage location
localfolder="/home/myfiles"  # - where are my files

# -- DO NOT CHANGE FROM DOWN BELOW --

recorrido=`ls $localfolder`

for i in $recorrido; do

        echo "Copying archive $i , proceso $$ , use CTRL+C to abort "
        echo "Information:"
        echo `file $localfolder/$i`
# -- Comandos FTP --
ftp -i -v -n $ftpserv <<ENDFTP
user $ftpusr $ftppass
binary

send $localfolder/$i $remotefolder/$i
bye
ENDFTP

        echo "Completed upload for $i"
        echo ""
        sleep 3

done

echo "FINISHED"