Red Hat Enterprise Linux Basic Commands | Linux Basic Commands | RHEL Fundamentals
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Red Hat Enterprise Linux Basic Commands | RHEL Fundamentals
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►Content:
Red Hat Enterprise Linux CLI Commands
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00. To see current directory
pwd
Output: /Current_Directory_Name
01. To Change Directory
cd [/direcotory_name]
Ex. cd /my_directory
02. To Displays the amount of diskspace file available
df -kh
Note: kh - human readable in kilobyte size.
03. To see Space in kilobyte
free
for megabyte
free -
04. To see current directory
pwd
Output: /Current_Directory_Name
05. To make directory
mkdir directory_1
mkdir -p /directory_1/directory_2/....../directory_n
remove directory rmdir directory_name
06. To create a file
touch file_mame.extension
07. To display files in serially
ls
08. To display files by list
ll
09. To show list of file with human readable
ls -larth
Or
ll -larth
10. Open a file in CMD
vi file_name.extension
Example: vi file.txt
11. To Enable to write in note pade
i
12. To escape to write in note pade
esc
13. To save and close file
:x!
14. To see file content in CMD
cat file_name.extension
15. Creating User
15.01.To create new user
useradd user_name
passwd user_name
Then you need to add give new password for this newly created user
15.02.Deleting User
userdel -f -r Your_User_Name
16. login by CMD
su - user_name
17. Change file owner
chown user_name:group_name file_name.extension
Note: here group name is user name
18.
18.1.Set specific file permission to a user
setfacl -m u:username:rwx folder_name/file_name
18.2.If you want to apply it recursively to all the subdirectories
setfacl -R -m u:username:rwx folder_name/file_name
Note: setfacl is short for set File ACL (Access Control List)
18. Change file mode
To give read permission to a file owner
chmod 400 file_name/direcotory_name
To give read & write permission to a file owner
chmod 600 file_name/direcotory_name
To give read, write and access permission only to a file owner
chmod 700 file_name/direcotory_name
19. Configuring IP
To display current ip configurations
ifconfig
To change on network path
cd /etc/sysconfig/network-script/
Then ls
To open if cfg in note pade
vi ifcfg-eth0
Now we need to change
ONBOOT = YES
BOOTPROTO=none
Add below lines
IPADDR=192.168.1.2
NETMASK=255.255.255.0
Restart network
service network restart
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