Added rpc code to square a number
updated square function
Added multithreaded version fof square function
Added rpc with auth but some bug fix needed
Added daytime client and server
Added concurrent versions as well
Added concurrent echo server
Added basic stuff
Added 2 basic programs
added source for groups ans sessions
added alarm example
added signal folder
renamed files and added content related to sockets
fixed a bug
Added sigaction.c
Added deamon.c
Added basic pipers and fork case
Added implementation of commands for linux
Added code for popen
Added source for fifo