atul jha

apt-cache showpkg 

I been using Ubuntu/Debian for over 5-6 years now but never got an opportunity where i had to check the available version of particular software in repository and know about its dependency and also reverse dependency.

 sudo apt-cache showpkg ftp

Package: ftp
Versions: 
0.17-19build1 (/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_lucid_main_binary-i386_Packages) (/var/lib/dpkg/status)
 Description Language: 
                 File: /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_lucid_main_binary-i386_Packages
                  MD5: e4165975d9905e3c75c5c1aa9714d90d


Reverse Depends: 
  webcam,ftp
  ltp-network-test,ftp
  heimdal-clients,ftp 0.16-1
  gabedit,ftp
  ftp-ssl,ftp 0.10
  ftp-ssl,ftp 0.10
  ubuntu-standard,ftp
Dependencies: 
0.17-19build1 - libc6 (2 2.11) libncurses5 (2 5.6+20071006-3) libreadline6 (2 6.0) netbase (0 (null)) netstd (0 (null)) 
Provides: 
0.17-19build1 - 
Reverse Provides: 
heimdal-clients 1.2.e1.dfsg.1-1ubuntu1
ftp-ssl 0.17.19+0.2-1

After 2 hrs of brain storming on weekend in my office finally got spell checker working for my open office 3.2 on ubuntu 10.04. i had to take expert help from Hobbes, nigleb and lastly Indranil dada and it worked.

sudo apt-get install hunspell  myspell-en-us openoffice.org-help-en-us

Once this is installed  open a open office document and TOOLS -> OPTIONS –> LANGUAGES

Once this is done check WRITING AIDS and do as screen shot does.

Restart your open-office and you will have spell checker working.

Apart from playing with the Source Code Open Source Software has given us.

Installing Monit :–

sudo apt-get install monit

This command will install Monit on Ubuntu.

In order to Start the Monit we need to edit file  “/etc/default/monit” and set the  “startup= 1”

This will start the Monit, but we need to do the real work inside the “/etc/monit/monirc”  file, and mention what all services we want to be monitored.

I have simply added a script for monitoring my Nginx Server

check process nginx with pidfile /var/run/nginx.pid
start program = “/etc/init.d/nginx start”
stop program  = “/etc/init.d/nginx stop”
group www-data

But before that we need to enable few other services as well like:–

set daemon  20           # check services at 2-minute intervals

set logfile syslog facility log_daemon    #for log analysis

set httpd port 2812 and
use address localhost  # only accept connection from localhost
allow localhost        # allow localhost to connect to the server and
allow admin:monit      # require user ‘admin’ with password ‘monit’
#     allow @monit           # allow users of group ‘monit’ to connect (rw)
#     allow @users readonly  # allow users of group ‘users’ to connect readonly

Once am done with this i will restart monit and see the status on localhost:2812 , we will see the status saying nginx is running.

let kill or stop Nginx and see the same url, you will see a message saying Nginx is stopped.

As we have asked the monit to check and restart the service at 2 minutes, you will see the process up and running again.