How to Create File commands in Linux

This article describes how to create file commands in Linux.

Create a folder

Mkdir aaa

Mkdir-P aaa

Create FILE command

VI foo.txt

Emacs foo.txt

Echo "aaaa"> foo.txt

Cat> foo.txt

Clear command

> Foo.txt

Mkdir/home/U1 create Folder/home/u1

Chown Oracle/home/U1 indicates changing the directory owner to an oracle account;

Chgrp DBA/home/U1 change/home/U1 directory to DBA;

Chmod 755/home/U1 indicates that the Oracle account has 755 permissions on the/home/U1 directory;

Rmdir/home/U1 indicates deleting the/home/U1 directory

Hostname can be used to view the Linux computer name;

Whoami allows you to view the current user;

PWD displays the current path;

DF view system hardware information

Ls-lrt l indicates that the detailed list is displayed,-T indicates that the list is sorted by time, and-R indicates reverse sorting.

Cat orcl_ora_3436.trc | grep Bucket

See the following file content:

More/etc/oratab

CAT/etc/passwd

CAT/etc/group

The preceding method is used to create file commands in Linux.