Add a character to the beginning of each line only if it's not already there

Channel:
Peter Schneider
Subscribers:
4,130
Published on ● Video Link: https://www.youtube.com/watch?v=rzDQKPOXYlY


Duration: 1:58
0 views
0

Add a character to the beginning of each line only if it's not already there
I hope you found a solution that worked for you :)
The Content (except music & images) is licensed under (https://meta.stackexchange.com/help/licensing)CC BY-SA |
Thanks to all those great people for their contributions!

(unix.stackexchange.com/users/532174/sepp-a)Sepp A |
(unix.stackexchange.com/users/22565/st%c3%a9phane-chazelas)Stéphane Chazelas |
A special thanks goes out to the (https://unix.stackexchange.com/questions/725444/add-a-character-to-the-beginning-of-each-line-only-if-its-not-already-there)Stackexchange community |

I wish you all a wonderful day! Stay safe :)

sed regular-expression



Other Videos By Peter Schneider


2022-11-22How do I produce a PDF from imagemagick with Fast Web View enabled?
2022-11-22What's the point of adding event to interface?
2022-11-21How to resolve linenumber in deadlock graph XML to line number displayed in SSMS sproc definition?
2022-11-21What is a good way to get a time for the data freshness when the source is log shipped to another...
2022-11-21Running sp_updatestats probably overrides manually done UPDATE STATISTICS WITH FULLSCAN and ruins...
2022-11-21Amazon Linux 2 SSL setup with Godaddy subdomain Certificate
2022-11-21Is it possible to increase the ENOB by oversampling and averaging the readings of an external ADC...
2022-11-21Proper way to write ETH Withdrawal function in Contract
2022-11-21Add/enable language to Language Module from code
2022-11-21Difference between to_server and from_client in snort
2022-11-21Add a character to the beginning of each line only if it's not already there
2022-11-21Formula Field or Flow?
2022-11-21How to load a png image as an array in Julia?
2022-11-21What Does Avoiding Vendor/Provider Lock in Mean in Cloud Operations?
2022-11-21Is dangerous bend a classical symbol in TeX?
2022-11-21How do you use two mappings to traverse a 2-tuple in Haskell?
2022-11-21How to run VMware 16 on Windows Server 2022 host?
2022-11-21What makes a MP4 streamable?
2022-11-21await 1, what is it good for?
2022-11-21cannot update MacBook Air to Monterey from Big Sur
2022-11-21How encryption recovery code works?


Tags:
sed
regular-expression