passwd command stands for the password. By using passwd command we can change the password of a user account in Unix system. Steps for change password. 1. Enter the command “passwd” on the terminal and press enter. 2. System asks for old Unix password then the user will enter old Unix password. 3. System asks … Read more
Command “cal” stands for calendar.This command is used to see the calendar of a specific month/ year or both.The basic syntax of command “cal”. cal [month] [year] [month]- is used for specify month[year] – is used for specify year cal command to display calendar of current month type “cal” command on terminal and press enter … Read more
The “echo” command in Unix is often used in the shell script for displaying/printing messages on the terminal.There are two uses of the “echo” command. 1. echo to print messages on the terminal. Echo with options -n: This option prevents the trailing newline character from being printed. It is useful when you want to display … Read more
The linux date command is used to display and set the date of the system.To see the current date type the command “ date” on the terminal as shown the below $ date [ press enter on terminal] output Sat Jul 1 17:32:37 IST 2023 Linux date Format Linux date format is as below %Y: … Read more
Command cd stands for Change Directory. You can change directory or move from one directory to another directory by using cd command. Syntax:
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$ cd [directory name] [press enter] |
Example: pwd command display the absolute path name of current directory. To see the current directory absolute path press pwd command on terminal.
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$ pwd [press enter] /home/it |
We are currently in “ it ’ … Read more
To delete user in linux first login as root using using su – then provide root password after login use command userdel -r user_name. userdel command is used to delete ther specified user_name
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[cse@localhost ~]$ su - Password: [root@localhost ~]# userdel -r manish [root@localhost ~]# |
With userdel -r We delete a user and its home directory and the user´s mail spool.
For adding a new user first login as root using su – then use command useradd username this will create n new user to check detail of user use id username it will show user detail. login as root
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[abc@localhost ~]$su - password: |
give the following command
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[root@localhost ~]#useradd manish |
check user is created or not
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[root@localhost ~]#id manish uid=501(manish) gid=501(manish) groups=501(manish) |
it will give … Read more
“mv” command is used to moves a group of file to a another/different directory. “mv” command can also use to rename file and directory. This command does not create a new copy of file , it only rename it. When we rename it does not consume any additional space on the disk. Syntax: $ mv … Read more
Linux and Unix tail command is one of the important command. Command tail displays the bottom/end of the file at the terminal. When “tail” command is used without any option it will display the bottom/end ten lines of the file. Syntax of tail Command in Unix and Linux Syntax: $ tail filename [press enter] Example … Read more
Command head displays the beginning/top of the file at the terminal. When “head” command is used without any option it will display the beginning/top ten lines of the file. Syntax:
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$ head filename [press enter] |
Example: Suppose we have a file Employee.txt as shown below and we want to see the beginning/top of this file by default it will … Read more
