How do I write to a specific line in bash?

How do I write to a specific line in bash?

Write a bash script to print a particular line from a file

1. awk : $>awk ‘{if(NR==LINE_NUMBER) print $0}’ file.txt.
2. sed : $>sed -n LINE_NUMBERp file.txt.
3. head : $>head -n LINE_NUMBER file.txt | tail -n + LINE_NUMBER Here LINE_NUMBER is, which line number you want to print. Examples: Print a line from single file.

How do you go to a specific line in terminal?

To do this, press Esc , type the line number, and then press Shift-g . If you press Esc and then Shift-g without specifying a line number, it will take you to the last line in the file.

How do I put text on one line in Linux?

1. added bonux replace echo text to insert by cat file-to-insert.txt – Archemar Mar 22 ’16 at 15:06.
2. At least with bash, instead of all those echo s, you could use printf ‘%s\n’ 2 a ‘text to insert’ . wq – evilsoup Mar 22 ’16 at 22:58.

How to view output from the command line?

You can view the standard output that went to the file by typing “myoutput.txt” in the command window. This will open the text file in your default text file viewer. For most people, this is usually Notepad.exe.

How to insert a line at specific line number in Linux?

The sed command is a powerful utility for editing files in Linux. It offers lots of operations on files. In this section, we’re going to insert text in the third line of File1 as we did with ed, but this time using GNU sed. The sed command was created based on ed, but unlike this, it cannot be used interactively.

How to apply shell command to each line of a command output?

[…] Note that if the command in question accepts multiple arguments, then using xargs is almost always more efficient as it only has to spawn the utility in question once instead of multiple times. You actually can use sed to do it, provided it is GNU sed. Replace substituted line with command output.

How to redirect output from Windows command line to text file?

Note that you can also just browse to that directory in Explorer and open the file from there. Here is an example of the output if the ipconfig command in a text file. To close Notepad, select Exit from the File menu. To close the command window, type exit at the command prompt and press Enter.