linux day -2 assignment
1 . List any two methods of creating files on Linux
1.) By using the touch command ex: touch filename
2.) By using vi editor
ex: vi filename
2 . What is the command to create a directory on Linux.
the command to create a directory on linux
by using mkdir command
example: mkdir directory-name
3 . What does ls -lart does. Explain each of the option lart
ls": This is the basic command to list files and directories in a directory.
"-l": This flag is used to display the listing in a long format, providing detailed information about files and directories, such as permissions, ownership, size, and timestamps.
"-a": This flag is used to show hidden files and directories (those starting with a dot).
"-r": This flag is used to reverse the order of listing, showing files in reverse order.
"-t": This flag is used to sort the listing by modification time, showing the most recently modified files first.
4 . What is the command to recursively copy all the files from /dir1/ to /dir5/
cp -r dir1/* dir5/
5 . What are two way to modify permissions on a file.
absolute mode
octal notation
symbolic notation
6 . If you want to update permissions on a file so that only the owner and group have read and execute permissions. What is the command to be used.
chmod 550 file_name
To give the owner full permissions and others only read and execute permissions: chmod 755 directoryname
To give the user write permission on a file: chmod u+w filename
7 . How do you get last five lines from a log file. Give the command to be used.
the command to be used as
tail -n 5 filename
8 . If you need to continuous list last 10 lines from a file, what option is to be used. tail -<>
command is used
tail - f -n 10 filename.log
9 . How do you pass the output of one command to the other. Write a command to display last 2 files from the cal command on the screen.
cal | tail -n 2
10 . Count the number of lines present in the output of cal command. Display only number of lines on screen.
cal | wc -l