Colorize svn diff

Install colordiff and configure Subversion's diff-cmd.

On Mac OS X, you can install colordiff using MacPorts.

$ sudo port install colordiff

On Debian or Ubuntu, you can install colordiff using apt.

$ sudo apt-get install colordiff

On other systems, you can download source tarball from http://www.colordiff.org/ and install colordiff.

~/.subversion/config

[helpers]
diff-cmd = colordiff

$ svn diff | less -R

Linux, Mac

Divide a huge file by lines

When I divide huge files such as log or CSV, I want them not to be divided in the middle of the line.

First, look into the number of lines in the file.

$ wc -l access_log
 1197356 access_log

Divide the file by 100000 lines.

$ split -l 100000 access_log