CODEWITHSUNDEEP
fileunixreplace
Adam
Adam

Reputation: 2192

How to find and replace line in a file in Unix?

I have for example this line in my file (note that the numbers after = are every time different):

abcd=1234

and I need to change it to:

abcd=9999

How can I do it?

Upvotes: 0

Views: 4333

Answers (1)

Drise
Drise

Reputation: 4388

Try sed -i.backup -e 's/abcd=.*/abcd=9999/' filename.txt

Example in filename.txt

abcd=123
abcd=15652

Output as expected:

abcd=9999
abcd=9999

Note: It has been presented to me that this is the GNU sed, which has some extensions apparently that make it different from the normal sed. I was not aware of this, and I have no means to verify this. If someone has the non-gnu solution, please feel free to edit it in.

Upvotes: 2

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