To use this, you will need the lynx tool, so install that first.
sudo yum install lynx
Now, to get list of all the URLs in local html file or some URL, just execute this:
lynx -dump -listonly
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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.
If you already have some mail in your maildir and you have set procmail filters, then it is difficult to apply the procmail filter, right? Not so, you just need to go to the Inbox directory and then execute the command.
for i in *; do cat $i|procmail; rm -f "$i"; done
This will pass all of your e-mail through procmail again and then your filters will get applied. Mails will go to their appropriate directory and you will be one happy man, I hope.
Continue readingHere are few quick tips on getting to see what could be wrong with firefox.
Config entries – about:config
Support Information – about:support
Details on config entries – http://kb.mozillazine.org/About:config_entries
Reset firefox profile – https://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-most-problems
Firefox profiles – https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data
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If you are experiencing slow ssh connections, then possibly your system is trying to do reverse lookup of the IP address. If that is the case, then you can add the below to “hosts” line in /etc/nsswitch.conf file.
‘[NOTFOUND=return]’
The other cause for slow connections can be GSSAPI authentication. If that is the case, then the simplest solution is to add the following in your “~/.ssh/config” file:
Continue readingIf you want to access some local resources like the release website from the remote server when you are connecting to the remoter server using ssh over VPN, then possibly reverse ssh tunnelling is the best option. So, basically when you are connecting to the remote server, you tell the server your intent to do so and which local resource you want to connect to and on which port.So, here I want to connnet to google.com and tunnel the data to 192.168.131.921:9090 tthough the tunnel, then the command to use will be ::
Continue readingCouple of days back, I was trying to take screenshot with Firefox. As usual I started out with searching for plugins which could take a screen shot for the whole page and not just the visible portion of the page. Installed couple of them, some did not work. Finally I found something called Development Bar.
So, here is a simple way to take a screenshot. Press “Shift+F12”. This will bring up a bar in the bottom of the firefox window. To take a screenshot, type:
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