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 show the first 10 lines of a file in Linux?
Type the following head command to display first 10 lines of a file named “bar.txt”:
- head -10 bar.txt.
- head -20 bar.txt.
- sed -n 1,10p /etc/group.
- sed -n 1,20p /etc/group.
- awk ‘FNR <= 10’ /etc/passwd.
- awk ‘FNR <= 20’ /etc/passwd.
- perl -ne’1..10 and print’ /etc/passwd.
- perl -ne’1..20 and print’ /etc/passwd.
How do I see the end of a file in Linux?
The tail command is a core Linux utility used to view the end of text files. You can also use follow mode to see new lines as they’re added to a file in real time. tail is similar to the head utility, used for viewing the beginning of files.
How do I display the 10th line of a file?
Below are three great ways to get the nth line of a file in Linux.
- head / tail. Simply using the combination of the head and tail commands is probably the easiest approach. …
- sed. There are a couple of nice ways to do this with sed . …
- awk. awk has a built in variable NR that keeps track of file/stream row numbers.
How do I view a command in Linux?
watch command in Linux is used to execute a program periodically, showing output in fullscreen. This command will run the specified command in the argument repeatedly by showing its output and errors. By default, the specified command will run every 2 seconds and watch will run until interrupted.
How do you find the end of a file?
You can either use the ifstream object ‘fin’ which returns 0 on an end of file or you can use eof() which is a member function of the ios class. It returns a non zero value on reaching the end of file.
How do I redirect the number of lines in Unix?
You can use the -l flag to count lines. Run the program normally and use a pipe to redirect to wc. Alternatively, you can redirect the output of your program to a file, say calc. out , and run wc on that file.
How do we go to the start of a line?
To navigate to the beginning of the line in use: “CTRL+a”. To navigate to the end of the line in use: “CTRL+e”.
How do I read a text file in Unix?
Use the command line to navigate to the Desktop, and then type cat myFile. txt . This will print the contents of the file to your command line. This is the same idea as using the GUI to double-click on the text file to see its contents.
How do I list the first 10 files in Linux?
The ls command even has options for that. To list files on as few lines as possible, you can use –format=comma to separate file names with commas as in this command: $ ls –format=comma 1, 10, 11, 12, 124, 13, 14, 15, 16pgs-landscape.