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What does the comm command do?
comm compare two sorted files line by line and write to standard output; the lines that are common and the lines that are unique. comm is the command that will help you to achieve this. It requires two sorted files which it compares line by line.
What information is shown in three columns when comm command is executed?
By default, ‘comm’ will always display three columns. First column indicates non-matching items of first file, second column indicates non-matching items of second file, and third column indicates matching items of both the files. Both the files has to be in sorted order for ‘comm’ command to be executed.
What is the output of PS description )?
The output includes the USER, PID, PPID, STIME, DEVICE, TIME and FUNCTION fields. Include processes on a job queue in the output. Display a long listing. The output includes the USER, PID, PPID, PRI, STATUS, JOBID, STIME, DEVICE, TIME and FUNCTION fields.
How use Chattr command in Linux?
The chattr command in Linux is a file system command which is used for changing the attributes of a file in a directory. The primary use of this command is to make several files unable to alter for users other than the superuser.
How is the output of the diff command different?
An example of how the output differs depending on the file order: Using the table below as a reference, you can better understand what is happening in your terminal. Let’s take another look at the diff command output: Let’s see the first difference in the output: The line 2 of file 1, CHANGE with line 2 of file 2.
What does 3C3 mean in the diff command?
Next line contains 2,3c3 which means from line 2 to line 3 in the first file needs to be changed to match line number 3 in the second file. It then tells us those lines with the above symbols. The three dashes (“—“) merely separate the lines of file 1 and file 2.
What does Line 5 mean in the diff command?
— 1,5 —- indicates the start of the second file and it says that line 2 is slightly changed from line 2 of file 1. It also indicates that line 4 has been added (+) in the second file and there is no corresponding line in file 1. This option provides output similar to the copied context format.
What does diff in CMP mean in Linux?
diff stands for difference. This command is used to display the differences in the files by comparing the files line by line. Unlike its fellow members, cmp and comm, it tells us which lines in one file have is to be changed to make the two files identical.