Basic command line tools for unix terminal

Linux Basic Commands

• pwd : prints working directory.

• ls :lists all the folders in current directory (This will list only visible files and folders (hidden files will not be visible)

• ls-al : list all the folders and files which includes hidden files with permissions like r- read w-write x- execute

• ls -a Document/ : -a is flag, Document/ is argumemnts

• . : current folder, .. : prev folder

• cd folder/

• cd ..

• cd ~ : current home director

• history :list out all the command lines we used

• clear : to clear the shell

• volumes, mount- external drives pendrive etc

• rwx- read write execute- permissions and gives users who have access to the folder

• top- network monitor

• mkdir: used to create new directory

• mkdir folderName/ : mkdir followed by folder name

• cd fol(TAB)- auto complete

• touch helloworld.sh: create new file

Vi Basics

• vi hellowrod.sh :create new files
• ./helloworld.sh : to execute the current directory file
• vi- only keyboard not mouse- Visual only mode
• hjkl- navigate like arrow top bottom right left
• i: insert mode to start typing text in vi
• ESC - to escapte from insert
• : enter command mode
• :w - write (Save mode)
• :q - quit
• :wq - write and quit (save and close)

Permission Basics

• chmod - modify the current use permission
• cdmod +x helloworld.sh : +x modified the user to have execute access
• cdmod -x helloworld.sh : -x removes the execute access

Link to File Permissions Tutorial

All the system commands are softwares in linux

• which ls : outputs : /usr/bin/ls - ls is a software
• echo $Path lists all the paths the os will search when looking for a command
• cat helloworld.sh - view the content of the file

Package Managers:

Package managers helps to download and install the packages and its dependencies. which reduces manual work of configuration lock: has all the manuals logged what packages are installed including dependecies - u can view and remove if u want ubundu apt install and remove feroro: yum install and remove windows: has chocolaty package manager- need to try mac has brew cask as package manager

• rm : delete
• rm -r fooldername/ : deletes the folder (-r is flag)

• mkdocs: ZEN KNOWLEDGE BASE
• pip install mkdocs