vim – yank/xopy in different register to paste

2014-01-16 1 min read Vim Tips

Very quick update, to use registers, you can select and then yank in a register to paste using the same register. This could be a convinient way to copy multiple selections and then paste which ever selection you want. Here is the simple way to do it:

visuallly select with v/V

then “qy to yank (here we are yanking into register q, so in the command you can use any of a-z to use as register)

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cgroups – use to control your cpu and memory

2014-01-06 2 min read Fedora Firefox Learning

cgroups is a kernel feature and with userspace utilities, we can use the feature to control the cpu and memory for per process. So, lets first install the required tools.

sudo yum install libcgroup-tools

Now, we need to enable the service.

sudo systemctl enable cgconfig.service
sudo systemctl enable cgred.service

cgconfig.service is to enable configuration for cgroups and
cgred.service is to enable configuration for cgroups for processes depending on the name.

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more clients for mpd.

2013-12-26 1 min read Fedora Linux

Here are some more clients that you can use with mpd.

sudo yum install mpd mpc qmpdclient.x86_64 gmpc.x86_64 sonata.x86_64

mpd is ::

Music Player Daemon (MPD) is a flexible, powerful, server-side application for
playing music. Through plugins and libraries it can play a variety of sound
files (e.g., OGG, MP3, FLAC, AAC, WAV) and can be controlled remotely via its
network protocol. It can be used as a desktop music player, but is also great
for streaming music to a stereo system over a local network. There are many
GUI and command-line applications to choose from that act as a front-end for
browsing and playing your MPD music collection.

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Fix typescript files generated with script command

2013-12-18 1 min read Learning Linux

Generally quite a lot of us would have used the script command. This generates the logs for the session. But the problem with the logs is that it contains a lot of un-readable characters. These characters are mostly from the color codes, and as such can be removed very easily with a single command:

cat typescript | 
 perl -pe 's/e([^[]]|[.*.*?[a-zA-Z]|].*?a)//g' | col -b > typescript-processed

This assumes the input log file is named as typescript and the output is kept as typescript-processed. You can change the names as required.

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get systemd journal entries on web interface.

2013-12-12 1 min read Fedora

Just in case you need it, you can get the journalctl entries from systemd in the web page.

First install :

yum install systemd-journal-gateway

Once you have done this you can get the journal entries with wget as well with

wget http://localhost:19531/entries

or if you prefer, you can browse with a browser at http://localhost:19531/. It has a nice little interface for browsing the entries, nothing too fancy but just sufficient.

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