অপারেটিং সিস্টেম লিনাক্স আমাদের কাছে তেমন একটা জনপ্রিয় না হলেও আমাদের মাঝে অনেকেই লিনাক্স ব্যবহার করে থাকি। যারা ব্যবহার করছেন বা আগামীতে করার চিন্তা আছে তাদের জন্য কিছু Basic Commands আশা করি কাজে লাগবে
For changing directory / to /etc
[root@pc1 /]# cd /etc
One step back /etc to /
[root@pc1 etc]# cd ..
Go to previous working directory
[root@pc1 /]# cd -
Go to current login user home directory
[root@pc1 etc]# cd ~
Show the contents of /etc in single color
[root@pc1 ~]# dir /etc
Show the contents of /etc in different colors with nature of contents
[root@pc1 ~]# Ls /etc
create a folder on root partition
[root@pc1 ~]# mkdir /disk
Create a folder in /disk
[root@pc1 ~]# mkdir /disk/dir
Create multiple folder in multiple directories with single command
[root@pc1 ~]# mkdir /etc/dir1 /var/dir2 /usr/dir3
Create multiple folder in same directory
[root@pc1 ~]# mkdir dir1 dir2 dir3
Copy a file in directory
[root@pc1 disk]# cp file dir
Copy a file from /disk/file and paste it in /disk/dir/
[root@pc1 disk]# cp /disk/file /disk/dir
Copy a directory with –r option
[root@pc1 disk]# cp -r dir dir2
Copy a file from /disk/file and paste it in /etc with myfile name
[root@pc1 disk]# cp /disk/file /etc/myfile
Remove a file
[root@pc1 disk]# rm file
Remove a file with forcefully option
[root@pc1 disk]# rm –f file
Remove a directory with out –r option and you face will an error
[root@pc1 disk]# rm dir
Remove a directory with –r option
[root@pc1 disk]# rm -r /disk
Remove a directory with forcefully option
[root@pc1 disk]# rm -rf dir
Move /etc/dir1 to /disk/ with different name
[root@pc1 disk]# mv /etc/dir1 /disk/mydir
Rename the folder name mydir to dir
[root@pc1 disk]# mv /disk/mydir /disk/dir
Rename the file name with myfile
[root@pc1 disk]# mv file myfile
Read a file page by page with less command
[root@pc1 disk]# less /etc/grub.conf
Read a file page by page with more command
[root@pc1 disk]# more /etc/qrub.conf
Read first ten lines of grub.conf
[root@pc1 disk]# head /etc/grub.conf
Read last ten lings of grub.conf
[root@pc1 disk]# tail /etc/grub.conf
Read first 12 lines with –n option
[root@pc1 disk]# head -n 12 /etc/grub.conf
Read last 11 lines with –n option
[root@pc1 disk]# tail -n 11 /etc/grub.conf
Copy the contents of /etc/grub.conf in /disk/file
[root@pc1 disk]# cat /etc/grub.conf > /disk/file
Append the contents /etc/mtab in /etc/file
[root@pc1 disk]# cat /etc/mtab >> /disk/file
Merging tow commands with pipe sign output of the first command is input of second command
[root@pc1 disk]# cat /etc/squid/squid.conf I more
Count the total lines of squid.conf
[root@pc1 disk]# cat /etc/squid/squid.conf I wc -L
Show only spool words in squid.conf
[root@pc1 disk]# cat /etc/squid/squid.conf I grep spool
Flush the contents of file
[root@pc1 disk]# cat /dev/null > /var/log/messages
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