Introduction to Unix: Fundamental Commands. What You Will Learn. The fundamental commands of the Unix operating system. Everything told for Unix here is applicable to the Linux operating system also. What is Unix.
–communicate with other computer systems.
You are now logged into the computer and will have a prompt that reflects the computer\'s name. For example, if you connect to hyperionmachine, the prompt looks like this:
[[email protected] ~]$
Unix is alsocase-sensitive. ThismeansthatcatandCataredifferentcommands.
Whenyoufirstlogin, the prompt is displayedbybash, andyouarerunningyourfirstunix program, thebashshell.
A pathcouldrefertoeither a directoryor a filename, sojoecould be either.
wc –w myfile.c : displays a count of wordsin a file.
A20. tr a b translate specified characters into other characters or to delete them.
A43. bash : Bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file.