How do I reverse the contents of a file in Linux?

How do you reverse the contents of a file in Unix?

5 ways to reverse the order of file content

  1. tac command is the reverse of cat. …
  2. This option uses a combination of commands to reverse the file order. …
  3. sed is the most trickiest of all. …
  4. awk solution is a pretty simple one. …
  5. perl solution is pretty simple due to the reverse function of perl.

How do I reverse the lines of a file?

The idea is to do the following:

  1. For each line move it to line 1 (to reverse). Command is g/^/m0 . …
  2. Print everything. Command is %p . …
  3. Forcefully quit without saving the file. Command is q! .

How do I find the command in Unix?

The find command in UNIX is a command line utility for walking a file hierarchy. It can be used to find files and directories and perform subsequent operations on them. It supports searching by file, folder, name, creation date, modification date, owner and permissions.

Which command is used to compare two files?

Use the diff command to compare text files. It can compare single files or the contents of directories. When the diff command is run on regular files, and when it compares text files in different directories, the diff command tells which lines must be changed in the files so that they match.

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How do I copy and paste a file in Linux?

Click the file you want to copy to select it, or drag your mouse across multiple files to select them all. Press Ctrl + C to copy the files. Go to the folder into which you want to copy the files. Press Ctrl + V to paste in the files.

How do I use find in Linux?

Basic Examples

  1. find . – name thisfile.txt. If you need to know how to find a file in Linux called thisfile. …
  2. find /home -name *.jpg. Look for all . jpg files in the /home and directories below it.
  3. find . – type f -empty. Look for an empty file inside the current directory.
  4. find /home -user randomperson-mtime 6 -iname “.db”

Which command is used to display the content of the file?

You can also use the cat command to display the contents of one or more files on your screen. Combining the cat command with the pg command allows you to read the contents of a file one full screen at a time. You can also display the contents of files by using input and output redirection.

How do you use Find command?

How to Use the Find Command to Search in Windows

  1. Open the Command Prompt Window with Administrative Privileges. …
  2. Switches and Parameters for the find Command. …
  3. Search a Single Document for a Text String. …
  4. Search Multiple Documents for the Same Text String. …
  5. Count the Number of Lines in a File.
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