sysrq
Reputation: 135
Delete line with specific number of characters
I have a specific file (file.txt) with several lines.
How is it possible to delete all lines that do not have 12 characters, using sed?
Upvotes: 1
Views: 51
Answers (2)
William Pursell
Reputation: 212424
Not sure why you would use sed. This is much cleaner in awk:
awk 'length == 12' file.txt
Upvotes: 2
oguz ismail
Reputation: 50795
Use an interval expression to specify the exact number of characters you want to match between the beginning (^) and end ($) of the input record.
sed '/^.\{12\}$/!d' file
Upvotes: 3
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