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fix 'sed' part of command after reading comments

edited May 17, 2019 at 10:54

As a one-liner to demonstrate the concept :

echo -e 'a\nb\nc\nPATTERN\nd\ne\nf' | sed -r '1'0,/PATTERN/ s/^(.*)$/#&#/'

You just have to adapt to your context :

as for the 'PATTERN'
I assumed '#' as the commenting character
and regarding how you can apply this to all your files. If they all are 'fileXXX.txt', you can run : sed -rii '1'0,/PATTERN/ s/^(.*)$/#&#/' file*txt

As a one-liner to demonstrate the concept :

echo -e 'a\nb\nc\nPATTERN\nd\ne\nf' | sed -r '1,/PATTERN/ s/^(.*)$/#&/'

You just have to adapt to your context :

as for the 'PATTERN'
I assumed '#' as the commenting character
and regarding how you can apply this to all your files. If they all are 'fileXXX.txt', you can run : sed -ri '1,/PATTERN/ s/^(.*)$/#&/' file*txt

As a one-liner to demonstrate the concept :

echo -e 'a\nb\nc\nPATTERN\nd\ne\nf' | sed '0,/PATTERN/ s/^/#/'

You just have to adapt to your context :

as for the 'PATTERN'
I assumed '#' as the commenting character
and regarding how you can apply this to all your files. If they all are 'fileXXX.txt', you can run : sed -i '0,/PATTERN/ s/^/#/' file*txt

answered May 17, 2019 at 10:44

As a one-liner to demonstrate the concept :

echo -e 'a\nb\nc\nPATTERN\nd\ne\nf' | sed -r '1,/PATTERN/ s/^(.*)$/#&/'

You just have to adapt to your context :

as for the 'PATTERN'
I assumed '#' as the commenting character
and regarding how you can apply this to all your files. If they all are 'fileXXX.txt', you can run : sed -ri '1,/PATTERN/ s/^(.*)$/#&/' file*txt