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Technical Blog

Checking the availability of SMTPS, POPS and IMAPS. 

April 13th, 2006

Open a linux shell execute the respective command; replace the hostname with the server IP/Hostname for which you want to check the avialability of secured mail ports.

POPS - port number 995 ->

# openssl s_client -connect hostname:995

SMTPS - port number 465 ->

# openssl s_client -connect hostname:465

IMAPS - port number 993 ->

# openssl s_client -connect hostname:995

Check out this link on more informaton about securing POP and IMAP.
http://www.linux-sec.net/Mail/secure_pop3.gwif.html

To create a link in the start menu in gnome. 

April 13th, 2006

The file should be named like gmplayer.desktop having content as below

[Desktop Entry]
Name=GMplayer
Comment=The Movie Player for Linux
Exec=gmplayer
Terminal=0
Type=Application
Categories=AudioVideo;Application;
Icon=gnome-mplayer.png

The location where these files are found are /usr/share/

Searching Google redefined ;) 

April 13th, 2006

Search in google using the below

?intitle:index.of? mp3 hello

This will search all the mp3 which starts with hello :)

Find files of more than 1 GB 

April 13th, 2006

find / -size +1000000000c

This is a useful command. This can be used to solve issues where the domlogs have exceeded 2 GB or so and apache refuse to start.

Clearing all unwanted semaphores — Memory Tweak 

April 13th, 2006

for i in `ipcs | tail -80 |head -75 |cut -d ‘ ‘ -f2`; do ipcrm sem $i; done

ipcrm removes System V interprocess communication (IPC) objects and associated data structures from the system.’ as per the man pages.



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