UNIX-programming-timev
Historically, UNIX systems have maintained two different time values: Calendar time. This value counts the number of seconds since the Epoch: 00:00:00 January 1, 1970, Coordinated…
#unix
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UNIX-programming-signals
Signals are a technique used to notify a process that some condition has occurred Soo if a process divides by zero the signal whose name is SIGFE (floating-point exception) is…
Rust Programming Language - Primitive types
first of all i learned smth like there is no default mutable variable in Rust. You must write smth like "let mut x = 5;" and the second one is bro, rust have dynamic arrays...damn…
UNIX-programming-userident
#UserID The user ID from our entry in the password file is a numeric value that identifies us to the system. This user id is assigned by system admin when our login name is…
UNIX-programming-errors
When an error occurs in one of the UNIX Systems functions, a negative value is often returned, and the integer 'errno' is usually set to a value that gives additional information/…
UNIX-programming-programs-procs
A program is an executable file residing on disk in a directory. #ProcandprocID An executing instance of a program is called a process. Some OS use the term task for this process…
UNIX Advanced System Programming - Files and directories
The UNIX file system is a hieararchical arrangement of directories and files. Everything starts with root ( / ). A directory is a file that contains directory entries. Logically…
UNIX Advanced System Programming-shell
its the Architecture of UNIX operating systems. ( applications ( library routines ( systemcalls (( kernel )) systemcalls ) shell ) applications ) In a broad sense, an operating…
