Remove comments from files

sed -e '/^#/d' -e 's/#.*$//' in
Use sed to remove comments from a file. In this example the comments begin with #. The command '/^#/d' remove line starting with #. The command 's/#.*$//' remove comments at end of lines.

7
By: agambier
2012-01-25 15:05:57
sed

1 Alternatives + Submit Alt

What Others Think

Just take care when the '#' is used for any other purpose than commenting ! - in a string - in bash substitution like ${variable#}
frans · 565 weeks ago
A decent effort but its flawed as Franz pointed out above.. as well as his examples it also removes shebang lines. Removing comments at end of lines is a tricky problem no doubt.
zlemini · 564 weeks and 3 days ago
Sorry, But I did not understand the syntax of this command, but the line below is also an alternative to remove the comments "#" of the specified files. sed-i-r 's /^#// g' testes.txt The command you provided is just a filter on the file and print only after the same lines that do not have comments, or if the case of a configuration file, you can print only the rows that do not have the "#". I hope to have collaborated with everyone! Att, Julio C. S. Ferraz
julioferraz · 564 weeks and 3 days ago
frans: you're right, but I used this command to remove comments from a configuration file not a script file. To protect shebang you can use the following command: sed -e 's/^#!/__SHEBANG__/' -e '/^#/d' -e 's/#.*$//' -e 's/^__SHEBANG__/#!/' The shebang is first shebang '#!' replaced by __SHEBANG__ so the line won't be removed then comments are removed and at last __SHEBANG__ is replaced by the real shebang '#!'. I guess there's a another cleaner way to perform it. But it doesn't fix the case showed by frans.
agambier · 564 weeks and 2 days ago
When I saw this, I feel this is a fantastic command key. But when i try this on my work, I don't know why it's not working. And also you need to visit https://essayguru.org/do-my-homework to complete your quality task easily. And showing some error here. Kindly get me out of this trouble. Thanks in advance.
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muneerahmed · 87 weeks and 4 days ago
That's a good thing, I hope you will add more information, scribble io
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muneerahmed · 82 weeks and 3 days ago
Thanks for the valuable information you have added here that helps in Remove comments from files and even though it is a simple for they have provided here are the results will be good so those who have tried it should definitely share how effective the code is convalescent hospital
Kaitlyn · 75 weeks and 5 days ago
We can learn more about the linux commands through these kinds of websites. I think this website is the Smile Roofing Inc absolute choice for you to learn such commands. The above command sed is used to remove comments from a file. I am looking here for more details on that.
Alyssalauren · 67 weeks and 4 days ago
I have a lot of files to organize and manage for Newport Beach Concrete And Masonry. This helped me a lot.
MarkMatthews · 65 weeks and 3 days ago
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