command line add text to text file.!!!

[slackman]

what's command line can to add text line to text file.

i use "echo 5555 >> text.t"

but that command line add text tail only. How to fix line number to add such as line 20 or line 30 .

[lakais88]

if you want to add text to a already existing file you do


cat >>(file name) and hit enter, you'll go to the next row where you type your information and hit enter again then ctr +d when your finished.

Hope this helps