Posts about UNIX Getting started
UNIX utility
May 23, 2021 10:00 0 Comment UNIX Getting started
Utility, Utility, Print the file, the pr command, lp and lpr commands, lpstat and lpg commands, Cancel and lprm commands, Send a message, Utility, So far you've definitely got some general understanding of the UNIX system and some basic ways to use commands., This tutorial will cover som
The UNIX vi editor uses wizards
May 23, 2021 10:00 0 Comment UNIX Getting started
The vi editor uses wizards, The vi editor uses wizards, Get started with the vi editor, The operating mode, Leave the vi editor, Move the cursor within the file, Control instructions, Edit the file, Remove the character, Change the instruction, Copy and paste instructions, Advanced instructions, Word or character search, Set instructions, Run the instruction, Replace the text, Attention, The vi editor uses wizards, In the UNIX operating system, there are many types of document editors, the, friendliest of which is vi. The, document edi
UNIX Shell Replacement
May 23, 2021 11:00 0 Comment UNIX Getting started
Shell substitution, Shell substitution, What is an alternative?, Variable replacement, Shell substitution, What is an alternative?, Shell performs an override when it encounters an expression that contains one or more special characters.
UNIX Manpage Help
May 23, 2021 11:00 0 Comment UNIX Getting started
Manpage Help, Manpage Help, Grammar, Man Page option, Useful shell commands, Manpage Help, UNIX commands have many optional and mandatory options, and it is common to forget the full syntax of these commands., Because no one ca
Unix Shell has built-in mathematical functions
May 23, 2021 11:00 0 Comment UNIX Getting started
Unix Shell has built-in mathematical functions, The most part of this tutorial covers the Bourne shell, but on this page the Korn shell of all the mathematical buildi, functions is listed., Mathemat
UNIX Shell function
May 23, 2021 11:00 0 Comment UNIX Getting started
The shell function, The shell function, Create a function, The argument of the function is passed, The function returns a value, Nested functions, Called from the Prompt function, The shell function, Functions allow you to break down the overall functionality of a script into smaller logical sub-parts and then be called to perfo
UNIX input/output redirection
May 23, 2021 11:00 0 Comment UNIX Getting started
Input/output redirection, Input/output redirection, Output redirection, Enter the redirect, Here document, Discard the output, Redirect commands, Input/output redirection, Most UNIX system commands accept input from your terminal and send the resulting output back to your terminal. A, command us
UNIX Shell reference mechanism
May 23, 2021 11:00 0 Comment UNIX Getting started
Shell reference mechanism, Shell reference mechanism, Meta-characters, Single quotes, Double quotes, Inverse quotes, Shell reference mechanism, Meta-characters, UNIX Shell provides a variety of meta-characters of special significance while taking advantage of them in
UNIX Shell Loop Control
May 23, 2021 11:00 0 Comment UNIX Getting started
Shell cycle control, Shell cycle control, Unlimited loops, Break statement, The continue statement, Shell cycle control, So far you've learned to create loops and use loops to accomplish different tasks., Sometimes you need to stop the loop or jump o
UNIX Shell Loop
May 23, 2021 11:00 0 Comment UNIX Getting started
Shell loop, Shell loop, Nested loops, Nested while loops, Grammar, Example, Shell loop, Loops are a powerful programming tool that enables you to repeat a series of commands., There are four types of loops for Shell programmer
UNIX Shell if... Else statement
May 23, 2021 11:00 0 Comment UNIX Getting started
Shell judgment statement, Shell judgment statement, case...... The esac statement, Shell judgment statement, When you write a shell script, there may be a situation where you need to select one of the two paths., So you need to use c
UNIX Shell basic operator
May 23, 2021 11:00 0 Comment UNIX Getting started
Shell basic operator, Shell basic operator, Arithmetic operator, The relationship operator, Boolean operator, Shell basic operator, Each shell supports a wide variety of operators., Our tutorial is based on the default Shell (Bourne), so all the important Bour
UNIX Advanced
May 23, 2021 12:00 0 Comment UNIX Getting started
UNIX Advanced, UNIX Advanced, UNIX regular expressions and SEDs, UNIX file system basics, UNIX user management, UNIX system performance, UNIX system logs, UNIX Signa
UNIX regular expressions and SEDs
May 23, 2021 12:00 0 Comment UNIX Getting started
Regular expressions and SEDs, Regular expressions and SEDs, Call sed, General syntax of sed:, Delete all rows with sed, Sed address, The sed address range, Replace the command, Replace the flag, Use a replaceable string separator, Replace with an empty string, Address replacement, Match the command, Use regular expressions, Match characters, Character class keywords, The reference, Use multiple sed commands, Reference, Regular expressions and SEDs, A regular expression is a string that can be used to describe several character sequences., Regular expressions, includi
UNIX file system basics
May 23, 2021 12:00 0 Comment UNIX Getting started
File system basics, File system basics, The directory structure, Browse the file system, df command, du command, Mount the file system, Uninstall the file system, User and group quotas, File system basics, A file system is a logical collection of files on a partition or disk., A partition is a container of information that can span th