Allowing users to run root programs

When a user starts a command, it runs with the permissions of that
user. What if you want to allow them to run some commands with root
permissions? You can, and that’s called suid.You can set a command to
be suid root with the chmod command. This will make it run as root even
if a user starts it. Here is how to set mybin suid root:

chmod +s mybin

Note that you must be very careful with this option.
Read more

bzip2 — A Block-sorting file (de)compressor.

Mr Mukund has developed a Perl extension for an Interactive Voice
Response (IVR) System with play back and voice menu options.
URL: http://search.cpan.org/search?mode=module&query=IVRS
(Thanks FSUG-Bangalore)

One Day One Command
===================

bzip2 — A Block-sorting file (de)compressor.

Summary:

bzip2 compresses files using the Burrows-Wheeler block sorting text
compression algorithm, and Huffman coding. Compression is generally
considerably better than the conventional compressors, & approaches
the performance of the PPM family of statistical compressors.

Read more

Free software

What is free software? “Free software” is a matter of liberty, not price. To understand the concept, you should think of “free” as in “free…

dos2unix — DOS/MAC to UNIX text file format converter.

One Day One Command (By Vishravars Ramasubramanian)
========================================

===========

dos2unix — DOS/MAC to UNIX text file format converter.

Summary:

Each OS will indicate the line end using Line Feed (LF,10) or Carriage
Return (CR,13). So when transferring a file from DOS to Linux, you have
to convert the Line end from DOS format to Linux format.

dos2unix will convert the DOS/MAC Text file to Unix format.

Read more