How do you display the last 100 lines in Unix?

How do you display the last 100 lines in Unix?

To look at the last few lines of a file, use the tail command. tail works the same way as head: type tail and the filename to see the last 10 lines of that file, or type tail -number filename to see the last number lines of the file.

How do I print last 20 lines in Linux?

To display last 20 lines of a file linux use the tail command. Displays the last 20 lines. The default is 10 if you leave out the -n option.

Which command can retrieve last 100 lines with running logs on Unix server?

“tail command in unix last 100 lines” Code Answer.

How do I print last 10 lines in Unix?

tail [OPTION]… [ Tail is a command which prints the last few number of lines (10 lines by default) of a certain file, then terminates. Example 1: By default “tail” prints the last 10 lines of a file, then exits.

How do I get the first 100 lines of a file in Unix?

Type the following head command to display first 10 lines of a file named “bar.txt”:

1. head -10 bar.txt.
2. head -20 bar.txt.
3. sed -n 1,10p /etc/group.
4. sed -n 1,20p /etc/group.
5. awk ‘FNR <= 10’ /etc/passwd.
6. awk ‘FNR <= 20’ /etc/passwd.
7. perl -ne’1..10 and print’ /etc/passwd.
8. perl -ne’1..20 and print’ /etc/passwd.

How can you read last 10 lines of a big file?

Open the file and start reading lines. After you’ve read 10 lines open another pointer, starting at the front of the file, so the second pointer lags the first by 10 lines. Keep reading, moving the two pointers in unison, until the first reaches the end of the file. Then use the second pointer to read the result.

How do you display the first 20 lines of a file in Unix?

head command example to print first 10/20 lines

1. head -10 bar.txt.
2. head -20 bar.txt.
3. sed -n 1,10p /etc/group.
4. sed -n 1,20p /etc/group.
5. awk ‘FNR <= 10’ /etc/passwd.
6. awk ‘FNR <= 20’ /etc/passwd.
7. perl -ne’1..10 and print’ /etc/passwd.
8. perl -ne’1..20 and print’ /etc/passwd.

How do you get to the last line in Unix?

In short press the Esc key and then press Shift + G to move cursor to end of file in vi or vim text editor under Linux and Unix-like systems.

How do you display the first 10 lines in Unix?

How do I find the first 100 lines of a file in Linux?

To look at the first few lines of a file, type head filename, where filename is the name of the file you want to look at, and then press . By default, head shows you the first 10 lines of a file. You can change this by typing head -number filename, where number is the number of lines you want to see.

What is use of chgrp command in Linux?

chgrp command in Linux is used to change the group ownership of a file or directory. All files in Linux belong to an owner and a group. You can set the owner by using “chown” command, and the group by the “chgrp” command.