Saber Lalam wrote: which program?
usually (as root on a system): # apt-get install <package-name> will do everything needed. depending upon the package you may have to configure some things after it is installed. if you do not know the name of the package you can use search the package list for keywords to see what shows up and use other search utilities to show more details. they are available both on-line ( https://www.debian.org/distrib/packages ) and off-line ( # apt-get install synaptic ) for more general introductory information check: https://wiki.debian.org/ there is also a debian-handbook and debian-reference (both are also packages which can be installed). songbird