DZone Snippets: Fak3r's Code Snippets

Populate titlebar in any term

fak3r (fak3r) — Wed, 20 Jun 2007 18:28:35 GMT

Populate your titlebar in any term with some useful info such as uname -a, architecture, if you're ROOT or not, etc. In Linux:



#!/bin/bash

HOST_NAME=`hostname -f`

if [ `id -u` = 0 ]; then

OPT=”`uname` (`uname -a | cut -f12 -d’ ‘ -`) - ROOT USER”

else

OPT=”`uname` (`uname -a | cut -f12 -d’ ‘ -`)”

fi

REPLACE=”${HOST_NAME} - ${OPT}”

echo -n -e “\033]0; $REPLACE \007 “

echo “${REPLACE}”

exit 0

Then run this script, and your termtitle will be something like the following:



Servername (Linux / x86_64).

For Solaris it needs to be done a bit differently:



#!/usr/local/bin/bash

HOST_NAME=`uname -a | cut -f2 -d’ ‘ -`

OPT=”(`uname -a | cut -f1 -d’ ‘ -` / `uname -a | cut -f6 -d’ ‘`)”

REPLACE=”${HOST_NAME} - ${OPT}”

echo -n -e “\033]0; $REPLACE \007 “

echo “${REPLACE}”

exit 0

Add/remove things from the OPT= line to customize. To test it, just issue the command on the commandline without the ()'s to see what it'll look like.

Remove comments from a file

fak3r (fak3r) — Wed, 20 Jun 2007 18:24:22 GMT

Remove all comment lines from a file.



sed -e '/^#/d' $1 | more

or to output it to a new file



sed -e '/^#/d' $1 > $1.nocomments

Simple mySQL backup script for cron

fak3r (fak3r) — Wed, 20 Jun 2007 15:01:39 GMT

Simple mySQL backup script for cron - backs up all databases, saves the last 4 copies.



#!/bin/bash



# modify the following to suit your environment

export DB_BACKUP="/backup/mysql_backup"

export DB_USER="root"

export DB_PASSWD="********"



# title and version

echo ""

echo "mySQL_backup"

echo "----------------------"

echo "* Rotating backups..."

rm -rf $DB_BACKUP/04

mv $DB_BACKUP/03 $DB_BACKUP/04

mv $DB_BACKUP/02 $DB_BACKUP/03

mv $DB_BACKUP/01 $DB_BACKUP/02

mkdir $DB_BACKUP/01 



echo "* Creating new backup..."

mysqldump --user=$DB_USER --password=$DB_PASSWD --all-databases | bzip2 > $DB_BACKUP/01/mysql-`date +%Y-%m-%d`.bz2

echo "----------------------"

echo "Done"

exit 0