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Home/ Questions/Q 3556
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Sneha Singh
Sneha SinghLevel 40
Asked: October 3, 20212021-10-03T22:59:38+05:30 2021-10-03T22:59:38+05:30

If You Need To Redirect The Output From A Command, What Symbol Should You Use?

If You Need To Redirect The Output From A Command, What Symbol Should You Use?
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    1. Priya Hamsa Bronze
      2021-10-31T13:55:18+05:30Added an answer on October 31, 2021 at 1:55 pm

      If You Need To Redirect The Output From A Command, What Symbol Should You Use?

      We use the greater than a symbol or we use the pipe operator in order to redirect the output command. Today, let us learn about the redirecting command in detail. Here we simply need to write the command in the command prompt. Write ls >(right arrow). This is just the key to the left of the? key on the keyboards and we write the type of the file that we need to put into it. Here it puts the result in the out file. so that we need to type the nano out file. When we type nanooutfile.txt, here we can see the output of the commands.

      We can use different commands like the find command to find the files with a minimum size of 10 kilobytes. Type find -size -10k -exec grepin -i -n “type the file file “which we need to find. And end the exec file {}. And now we should redirect the output with f.text.

      We should use the echo command to display the output on the screens, the echo command is nothing but to see something on the screen. By default it is called the standard output, we can able to redirect the output away from the screen and redirect it into the file by simply using the greater than symbol.

      And we are not able to find the file, it will be created by default. And if the file already exists then it will automatically be overwritten. And if we want to add it to a file instead of the overwriting, we can use the double arrow for it. So that we can redirect the output to any command.

      Now, let us learn some of the redirecting commands for the standard output error in Linux. The standard output is like a data stream that we send into the display monitor in order to display it on the screen.

      By default, the terminal itself be the standard output that can able to produce some of the output. Another kind is the standard error, the standard error is as a destination address for all the error messages that are present over there. Now, let us learn how to redirect the file. Let say we have a file ls -l, this will show some of the output if we want to send it into the file instead of displaying it into the terminal, for that we type ls -l > we see the file. Here if the file is not present it gets created but if the file is present it will get overwritten, and when we want to see the content of the file we just type cat f. So that it will display the content of the files.

      And when we use pwd >f, the earlier content that is present in the file is gets replaced and overwritten with the readability content or by the output of the pwd into the file. Hence, greater than symbol is used in redirecting the output from a command.

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