pkgwat is a nice utility to search the fedora packages websearch.
Description : Pronounced "package WAT", pkgwat is a fast CLI tool for querying : the fedora packages webapp. : https://apps.fedoraproject.org/packages/ : : You can make its search even better by helping us tag packages. : https://apps.fedoraproject.org/tagger
And to search for a package, you can use ::
pkgwat search pkgwat -h # get help on package.
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I was getting really bad battery life on my Fedora 19 system, and did not find much on how to tune it. Finally I found something that just does not need much configuration but works pretty well. So, here is what you need to do:
sudo yum install tuned tuned-adm
The second package, tuned-adm installs additional themes for power saving. It is optional and not mandatory. Once you have installed these, you can do the following:
Continue readingIn Fedora, ramdisks are not created by default as is the case with RHEL. So, if you need to get Ramdisks on Fedora, then you can do this:
sudo yum install MAKEDEV
This will create some default Ramdisk’s in the “/dev” directory. Now, if you need to change anything then feel free to go to “/etc/makedev.d” and feel free to change these files.
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For a long time I have not posted any script. So, its not that I have not written anything new, but just that did not put them here in lack of time. So, here is one interesting one. The original idea came from one posted in one of the interesting blog here. But the problem with this one was that for every time, it ran in the cron, it would make multiple entries in the “last” output (about 10 or more with my modifications for differentiating between solaris and Linux). This is something which is not quite desirable. Hence I came up with this script which is based on html template and hence the output is also easier to manipulate. BTW, just the below script will not help, you would need to download the template files as well. In the list.txt file, you will have to put the usename, password and the server IP to monitor. The server could be any Linux or Solaris host.
Continue readingIf you have to compare cksum for couple of files, the you know how cumbersome it is. So, I wrote a simple script, wherein you can create a file called cksums in the current directory and copy paste the result of “**cksums ***” into this file, and then run this script. Cool 🙂
#!/bin/bash -
#===============================================================================
#
# FILE: checkcksums.sh
#
# USAGE: ./checkcksums.sh
#
# DESCRIPTION: Compare cksums of multiple files.
#
# OPTIONS: ---
# REQUIREMENTS: ---
# BUGS: ---
# NOTES: ---
# AUTHOR: Amit Agarwal (),
# ORGANIZATION:
# CREATED: 02/22/2013 09:12:17 PM IST
# REVISION: ---
#===============================================================================
file=cksums
while read line
do
a=( $(echo $line) )
if [[ -f ${a[2]} ]]
then
b=( $(cksum ${a[2]}) )
if [[ $a == $b ]]
then
echo "Cksum for ${a[2]} = ${a[0]} matches"
else
echo "Failed ::Cksum for ${a[2]} = ${a[0]} matches"
fi
else
echo "Failed :: file ${a[2]} does not exist"
fi
done < $file
It is good practice to keep iptables/firewall enabled. But configuring it is difficult, do you agree. Not any more 🙂
Install firewall-config
sudo yum install firewall-config
This will install a GUI application, which you can run with “Firewall” application in the dash or with “firewall-config” in terminal. It is pretty straight forward to use this tool, even if you don’t have much knowledge on Firewall/iptables.
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ss is used to dump socket statistics. It allows showing information similar to netstat. It can display more TCP and state informationsthan other tools.
This comes in iproute package in Fedora. So, to install this you would need to install “iproute” if not installed already.
sudo yum install iproute
Now, once you have done that you can look at the man page to check what all you can see with ss. but here are some examples:
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