On debain you have by default three programs to maintain your installed software packages: dselect : a curses based frontend to the other programs dpkg : maintain software, like installing packages, purging , updateing etc. apt-get: to install software directly from the media or the net and to maintain it
#
Permission
7
full
6
read and
write
5
read and
execute
4
read only
3
write and
execute
2
write
1
execute
0
none
In the command, the first number refers to your permissions, the second refers to group, and the third refers to general users. Typing the command: chmod 751filename
gives you full access, the group read and execute, and all others execute only permission df -ah | grep -e [8-9][0-9]% -h - to check drives usage that are in the range of 80 to 99 percent capacity
Using modules
Perl comes with some internal modules. There are also two other resources for finding Perl modules: Debian and CPAN. CPAN is the Comprehensive Perl Archive Network; one of its primary functions is to serve as a repository of Perl modules.
Linux IDE naming conventions:
/dev/hda
1st (Primary) IDE controller
Master
/dev/hdb
1st (Primary) IDE controller
Slave
/dev/hdc
2nd (Secondary) IDE controller
Master
/dev/hdd
2nd (Secondary) IDE controller
Slave
SCSI disks are labeled /dev/sda, /dev/sdb, /dev/sdc etc... to represent the first, second, third
SCSI hard drive partitions are represented by an additional number. i.e. First drive first partition, /dev/sda1, second partition, /dev/sda2,...
