Linux-Command

This Repository contains Basic / Intermediate level of commands needed to work in Linux - Ubuntu.

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1. Understanding Basics of Shell Scripting - Bash :

       - INBUILD-SHELL-COMMANDS

       - SYMBOLS & METACHARACTERS

       - STRING

       - VARIABLE

       - SPECIAL/INTERNAL VARIABLE

       - VARIABLE SUBSTITUTION

       - ARRAY

       - ASSOCIATIVE ARRAY

       - OPERATOR - ARITHMETIC, LOGICAL, RELATIONAL

       - FILE TEST OPERATOR: (CONTROL STRUCTURES)

       - FUNCTIONS

       - BRACE EXPANSION

       - CASE STATEMENT

       - INFINITE LOOPS

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2. Shell Scripting Examples - Bash Scripting :

       - FILE - PERMISSION, COMPARISON, EXISTENCE, EMPTINESS

       - DIRECTORY - EXISTENCE

       - RENAME - SUBDIRECTORY FILES, FILE FORMAT, BULK FILES

       - LOOPS - FOR, WHILE, UNTIL

       - CONDITIONAL - IF, ELSE

       - SHIFT

       - FUNCTIONS

       - REMOVE - SUBSTRING, BULK FILES

       - CUT, SED, TR, GREP

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3. Basic Terminal Commands - TERMINAL :

       - DIRECTORY

       - FILE - PERMISSION, ARCHIVE-UNPACK, TRANSFER FILE USING SCP, CREATE-INSPECT-KEY-PAIR

       - SYSTEM-UPDATE

       - PACKAGES

       - SYSTEM-VPN

       - PYTHON - PIP, KIVY, VIRTUAL ENVIRONMENT

       - WEB-DEVELOPMENT - NODE, NPM, BROWSER-SYNC, REACT, REACT-NATIVE

       - DOCKER

       - PARTITION - CREATE, DELETE, SWAP, DISK-USAGE

       - PROCESS - RUNNING, TERMINATE

       - CRONTABLE

       - REMOTE CONNECTION

       - SERVICES

       - LOG FILES

       - SYSTEM - ACCOUNT

       - RESETTING GNOME

       - FACTORY-RESET-WITHOUT-REMOVING-DATA

       - REPAIRING-BOOT-AFTER-INSTALLING-LINUX-AND-WINDOWS (DUAL-BOOT)

       - TERMINAL BASIC COMMANDS

       - SYMBOLS IN TERMINAL

       - OPERATOR IN TERMINAL

       - KEYBOARD SHORTCUT IN TERMINAL

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4. GIT Commands - GIT BASH :

       - BASIC-CONFIGURATION

       - INITIALIZATION & STATUS

       - STAGING AREA

       - COMMIT

       - GIT HISTORY

       - STASHING

       - TAGGING

       - REMOTE

       - BRANCHES

       - MERGE

       - PUSH

       - ADD SSH KEY TO GITHUB

       - DELETING COMMIT HISTORY BUT KEEP CURRENT STATE

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5. PostgreSQL in Linux - PostgreSQL :

       - INSTALLATION AND SETUP

       - DATABASE

       - TABLE

       - FILTER USING CONDITIONS

       - CONSTRAINT

       - COMPARISON

       - AITHMETIC

       - TIME & DATE

       - FOREIGN KEY

       - EXTENSIONS

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