Basic commands used in CentOS/Rhel/Fedora
Basic Commands.......
#ls (List the contents of any directory)
#ls -l (Long listing - detailed report of available files)
#ls -la (Long listing including hidden files)
#pwd (Shows your present working directory)
#cd .. (change directory - moves you to one level up)
#cd /var/tmp (change directory to the specified path)
#cd (Bring back to your home directory)
Ctrl + L (Clear Screen)
Shift + Pg up Key (scroll your screen upwards)
Shift + Pg down Key (Scroll your screen downwards)
#cd - (Switches u between your current & previous directory)
#touch file1 (creates an empty file)
#mkdir dir1 (Creates new directory)
#cd dir1 (change directory to dir1)
#pwd
#cat (a closing angle bracket) file2 (Create new file with data)
Enter the data and press control + d to save the contents
#cat file2 (check the data inside the given file)
#cat ( 2 Closing angle brackets) file2 (Appends the new data in previously created file)
Enter the data, press enter and ctrl + d
#cat file2
How to Copy file and Dir...
#cp file2 file3 (make a copy of file2 with new name file3 including the contents of file)
#cp file2 /tmp (make a copy of file2 in /tmp directory)
#cp file2 /tmp/backup_file2 (make a copy of file2 in /tmp directory with new name)
#cp -r dir1 dir2 (-r switch is used to copy a directory)
#cp -r dir1 /tmp/backup_dir1 (copy directory & rename)
How to move and rename file......
#mv dir1 /var/tmp/ (Moves the dir1 to specified path)
#mv file1 /tmp/backup_file1 (Move and rename)
#mv old_name new_name (same mv command is used for renaming)
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