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Browsing articles in "Linux"
Oct
20

Tweetdeck in 64bit Ubuntu

By bradj  //  Linux  //  No Comments

I found this post to work perfectly. Check it out!

You may have to restart Tweetdeck a time or two for it to work. I had to restart it just once.

Enjoy :)

Aug
4

Simple MySQL Backup Bash Script

By bradj  //  Bash, Linux  //  No Comments

Wrote this script to backup a MySQL database of mine. Let me know if you have trouble using it :) 

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#!/bin/bash
# This script was created by Brad Janke
# www.bradjanke.com
# Please use with caution =D
# <3 Penguins....
DATE="$(date '+%Y_%m_%d_%H%M')"
# password associated with the user
PW=""
# the name of the user you will connect to the MySQL server with.  This user must have read access to the database you are attempting to backup
USER=""
# the name of the database you want to backup
DB=""
# Where the backup will be written to
FILE="$DB.$DATE.sql"
mysqldump -u $USER -p$PW $DB > $FILE && echo "$FILE written successfully...."
echo "FIN!"
Jul
28

Automatically Add SSH Key to Your Servers

By bradj  //  Bash, Linux  //  No Comments

I am constantly working with multiple linux servers (mostly Debian). Whenever I create a new server I immediately execute this simple script I created which adds my box’s public key to the server I am trying to communicate with. If you know about SSH and SSH Keys then you know what I am talking about… if not… read this. Basically… an SSH Key circumvents the process of sending a password over the wire which is susceptible for interception and decryption. When connecting to a server under the SSH protocol the server sends the client a key/file that is encrypted with super awesomeness. The client reads the file and is like… dude… you need a password… and you’re all like… ok try this password… and then it’s like ok that works I am going to open the connection now…. and you’re like sweet and are able to start h4xing the crap out of life. The difference between this and normal auth: the SSH client does that communication on the client system instead of doing it over the wire! Yay… not rocket science but whatever.

Anyway… this script I wrote sets this junk up for ya. Is there another way to do it that is probably better? Absolutely. If you know it… then please share! :) 

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#!/bin/bash
 
usage()
{
cat << EOF
usage: $0 options
 
This script appends your public SSH Key on the server you specify which allows you to ssh into that server without typing a password 
 
OPTIONS:
   -h      Show this message
   -u      Username associated with the server you are accessing
   -s      Server address
   -f      SSH Public key file
 
EXAMPLES:
   ./distributeSSH.sh -u username -s 172.1.1.1 -f ~/.ssh/id_dsa.pub
EOF
}
 
user=
server=
file=
while getopts “hu:s:f:” OPTION
do
     case $OPTION in
         h)
             usage
             exit 1
             ;;
         u)
             user=$OPTARG
             ;;
         s)
             server=$OPTARG
             ;;
         f)
             file=$OPTARG
             ;;
         ?)
             usage
             exit
             ;;
     esac
done
 
if [[ -z $user ]] || [[ -z $server ]] || [[ -z $file ]]
then
     usage
     exit 1
fi
 
echo "User = $user"
echo "IP = $server"
echo "SSH Key file = $file"
 
echo "Uploading file on $server in the home directory of $user"
scp $file $user@$server:~/
echo "Executing necessary commands on $server to configure ssh key"
 
ssh -t $user@$server "if [ ! -d ~/.ssh/ ]; then echo Making ssh directory; mkdir ~/.ssh; else echo Found ssh directory; fi; chmod 700 ~/.ssh; cat ~/id_dsa.pub >> ~/.ssh/authorized_keys; chmod 600 ~/.ssh/authorized_keys; rm -f ~/id_dsa.pub"
echo "Configuring client to connect without using password..."
ssh -o PreferredAuthentications=publickey $user@$server echo "add this line to your .bashrc: alias server='ssh -X $user@$server'"