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Reload this Page [SOLVED] sed command '1s/^/File: /;1!s/^/+ /'
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Old 06-07-2022, 08:35 PM   #1
Faki
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sed command '1s/^/File: /;1!s/^/+ /'

What does this sed command do? I see that it adds "File: " or "+ ", but is not straightforward to determine when the expressions are inserted.

Code:
sed '1s/^/File: /;1!s/^/+ /'
 
Old 06-07-2022, 09:06 PM   #2
michaelk
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Lets start with https://www.gnu.org/software/sed/manual/sed.html

Basically 1 is line one and 1! is all lines but line 1.
 
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