SSH Socks Proxy

$ssh -D 9999 username@ip-address-of-ssh-server

Listens to Port 9999 and tunnels the connection via the ssh-server connected

VIM Editor - Search and Replace

• /searchkey - search something
• :[range]s/search/replace/ - replace something within range
• :8,10 s/search/replace/g  - replace something within range
• :%s/search/replace/g - replace something full document
• :%s/search/replace/gc.  - prompt
• 
  

Kannel restart script | Attempting to Kill a process in linux until it gets killed

Restarting kannel wasn't simpler, as the bearerbox was not exiting on single stop command for Kannel. So needed to do some tricks on killing the bearerbox first. See the code

#!/bin/bash
while [ true ]
do
 echo "quering bearerbox"
 sleep 1
 count=$(ps -C "bearerbox" | wc -l)
 echo $count
 if [ $count -eq 2 ]
 then
  echo "attempting to kill bearerbox"
  killall bearerbox
 else
  sleep 1
  echo "======= bearerbox killed ========"
  break
 fi
done
sleep 1
bearerbox /etc/kannel/kannel.conf
smsfox /etc/kannel/kannel.conf

bash shell quick tips

some quick tips on bash shell programming

a) Variable set/access

varname='some text'
echo $varname

b) store command output to a variable

varname=`somecommand`
echo $varname

or,
an alternate way to do it
varname=$(some command)
echo $varname

eg. - to store current timestamp in a variable
current_timestamp=`date +%s`
echo $current_timestamp

c)s

eg

d)

eg

e)

eg

f)

eg

g)

eg