Convert DEB to RPM or RPM to DEB Package

Posted on by admin

You can convert DEB file to RPM package and RPM to DEB package using alien command, if you have a *.rpm file that you want to install on a Debian or Ubuntu.

Convert RPM to DEB

Install alien command on Ubuntu as mentioned here:

# sudo apt-get install alien

Now, use alien command to convert rpm to deb file,

# alien clamav-0.92.1-1.el5.rf.i386.rpm

clamav-0.92.1-1.el5.rf.i386.deb generated

Finally, Install deb packages using the dpkg command,

# dpkg -i clamav-0.92.1-1.el5.rf.i386.deb

Where,
-i = install a package

Convert DEB to RPM

Use alient -r option to convert a deb file to rpm file.

# alien -r clamav-0.92.1-1.el5.rf.i386.deb

clamav-0.92.1-1.el5.rf.i386.rpm generated

Once you generate the rpm file, you can install it on Red Hat, Fedora or CentOS.
Finally install rpm,

# rpm -ivh clamav-0.92.1-1.el5.rf.i386.rpm

Where,
-i = Install RPM
-v = Install in verbose Mode
-h = Print  50  hash  marks  as the package archive is unpacked

nJoy 😉

 

Sysadmin as a Job

Posted on by admin

So .. Today I got a question asked to me :

” why did you leave programming to become a sysadmin? ”

This came as a surprise question from a new friend I have. And it got me thinking…
Why sysadmin ?

(more…)

Restarting shpinx for kaltura

Posted on by admin

Common problem with kaltura..

Common solution …

pkill searchd 
/opt/kaltura/bin/sphinx/searchd -c /opt/kaltura/app/configurations/sphinx/kaltura.conf

nJoy 😉

.Net Restart an ASP.NET application programmatically without editing the web.config

Posted on by admin

Windows oddly.. but a good friend found this it’s on her site:

http://rochcass.wordpress.com/2013/03/28/restart-an-asp-net-application-programmatically-without-editing-the-web-config/

to quote:

Several times I would be working on a site and some data would not change due to session variables or the .NET cache. This can’t be eliminated by clearing the browser cache but would need the whole ASP.NET application to be restarted to clear all sessions and cache. A traditional way of doing so is to edit the web.config slightly (a space, comma, fullstop would do the trick) … however this was happening often so I decided to restart my application automatically through my code. To do so, I used the Global.ascx on application_start and added this simple line of code which restarts the ADO.NET application:

System.Web.HttpRuntime.UnloadAppDomain();

 

Thanks Roch..

nJoy;-)

 

Accessing ESX management interface (DCUI) from ssh

Posted on by admin

Access the ESXi Direct Console User Interface (DCUI) over SSH

When not in position to go to the DC to access the ESX text mode interface use the DCUI command:

First you need to enable and start Remote Tech Support (SSH). This is done for the ESXi Host in Configuration -> Software -> Security Profile


Use an SSH client (putty) to connect to the ESXi host.

Once logged in simply run dcui

~ # dcui

Look familiar? Want to change the color to look like the console – check out this post.

To exit DCUI and return to the prompt use CTRL-C

KB article : here

 

nJoy 🙂

One Liner Email from bash

Posted on by admin

Simple:

# echo “This will go into the body of the mail.” | mail -s “Hello world” you@youremailid.com

nJoy 😉

 

Removing ctrl M (^M) from files in vi

Posted on by admin

It’s a common thing to open a file on linux and discover it was flooded with ^M symbols after being editted in windows by some windows user.

The ^M symbol is pretty harmless usually (it is the representation of alternate CR carriage return or move to beginning of line). An old IBM /PCDOS artefact not shared with unix as a requirement for newline.

In vi or vim use the following keystrokes to remove the ^Ms. NOTE the ^V is an escape so will not show in your vim 

:%s/^V^M//g

nJoy;

Automagically maintain a file system with autofs

Posted on by admin

Pending more detail

yum install -y autofs

/etc/autofs.master contains used protocols

/- /etc/autofs.nfs

/etc/autofs.nfs

/mnt/mountpoint -fstype=nfs,rw,soft,intr,rsize=8192,wsize=8192 hostname_or_IP:/mnt/exported_folder

To find out what is exported on a given machine use

showmount -e

nJoy 😉