A fork bomb (also named Rabbit virus) is a denial of service attack against a system.
Last week, I had to produce a short tutorial about screen recording on Mac OS X Mavericks.
To produce the tutorial I had to use QuickTime Player app, but from the GUI there is no way to launch two instances of QuickTime Player app.
The text file manipulation is one of the most common job for a system administrator, today I'm going to show how to insert a string at the beginning of each line in a text file.
Some weeks ago I installed Ubuntu Saucy Salamander on my Acer Aspire 5630 with 1 GB of RAM.
As it happens for other operating systems, the new release of Ubuntu is a resources hungry release. On my old laptop, the performances and the user experience are very poor. So I have modified some settings to get a better linux box.
The text file manipulation is one of the most common job for a system administrator, today I'm going to show how to append a string to each line of a text file.
we have a file named file0.txt and we want to append the string "text to append" to each line of this file.
Sometimes you could have the need of numbering the lines of a text file. If the text file is very short you can do this job by hand, but if the number of lines of the text files is high this is a tedious job.
Almost all of Unix flavors provides the nl tools.
I use vim every day on every platform I work, Linux, Windows, Mac, FreeBSD and all flavours of Unices
Someone can think I am a masochist, because there are a lot of visual editors more convenient than vim, but at this point my familiarity with him is huge, and I feel at home when I use it!