Unix and Linux Basic Commands

Below are details of Basic Commands

Command	Description
date	date command is used to print or set the system date and time. Syntax: date options
cal	cal displays a simple calendar. If arguments are not specified, the current month is displayed. Syntax: cal options
clear	clear the terminal screen
pwd	pwd command is used to print name of working directory
uname	print system information. Generally used to know the flavor and version of the operating system
who	show who is logged on
uptime	Tell how long the system has been running.
ls	If you simply execute ls on the command prompt, then it will display the files and directories in the current directory.You can pass a directory as an argument to ls command. In this case, the ls command prints all the files and directories in the specific directory you have passed.Syntax: ls directory
touch	The touch command simply creates an empty file. The below touch command creates a file_name.txt in the current directory.Syntax: touch file_name.txt
cat	The cat command is used to display the contents in a file. Syntax: cat file_name.txt
head	The head command can be used to print the specified number of lines from the starting of a file. Syntax: head -3 file_name.txt
tail	The tail command can be used to print the specified number of lines from the end of a file. Syntax: tail -3 file_name.txt
mkdir	The mkdir command is used to create the specified directory.
cd	The cd command can be used to change from one directory to another directory. You need to specify the target directory where you want to go.
mv	The mv command is used to rename the files and it also used for moving the files from one directory into another directory.
cp	The cp command is used to copy the content of source file into the target file. If the target file already have data, then it will be overwritten.
rmdir	remove or delete directories. Syntax: rmdir directory_name
wc	wc command can be used to find the number of line, words and characters in a file.
cut	cut remove sections from each line of files. Syntax: cat new_file.txt|cut -c1
man	If you want to know more about all above command then go to man comman Syntaxman command_name.