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I am trying to prepend text to the begging/header of a set of .vtt text files with sed in a loop. I'm not replacing any text, only adding text.

I need some line breaks in the text.

The text should read:

WEBVTT Kind: captions Language: eng File Creation Date: 2023-08

Here is what I am trying:

for file in *.vtt ; do sed -i '' 'WEBVTT/nKind: captions/nLanguage: eng/nFile Creation Date: 2023-08' "$file" done 

give me the error: sed: 1: 'WEBVTT/nKind: captions/ ...': invalid command code W

I'm not sure why. I tried switching double/single quotes, but that didn't work.

I am trying to prepend text to the begging/header of a set of .vtt text files with sed in a loop. I'm not replacing any text, only adding text.

I need some line breaks in the text.

The text should read:

WEBVTT Kind: captions Language: eng File Creation Date: 2023-08 

Here is what I am trying:

for file in *.vtt ; do sed -i '' 'WEBVTT/nKind: captions/nLanguage: eng/nFile Creation Date: 2023-08' "$file" done 

give me the error: sed: 1: 'WEBVTT/nKind: captions/ ...': invalid command code W

I'm not sure why. I tried switching double/single quotes, but that didn't work.

I am trying to prepend text to a set up files with sed in a loop. I need some line breaks in the text.

Here is what I am trying:

for file in *.vtt ; do sed -i '' 'WEBVTT/nKind: captions/nLanguage: eng/nFile Creation Date: 2023-08' "$file" done 

give me the error: sed: 1: 'WEBVTT/nKind: captions/ ...': invalid command code W

I'm not sure why. I tried switching double/single quotes, but that didn't work.

I am trying to prepend text to the begging/header of a set of .vtt text files with sed in a loop. I'm not replacing any text, only adding text. 

I need some line breaks in the text.

The text should read:

WEBVTT Kind: captions Language: eng File Creation Date: 2023-08

Here is what I am trying:

for file in *.vtt ; do sed -i '' 'WEBVTT/nKind: captions/nLanguage: eng/nFile Creation Date: 2023-08' "$file" done 

give me the error: sed: 1: 'WEBVTT/nKind: captions/ ...': invalid command code W

I'm not sure why. I tried switching double/single quotes, but that didn't work.