Question

35

rated 0 times [ 35] [ 0] / answers: 1 / hits: 126404 / 1 Year ago, sun, april 16, 2023, 12:31:08

I know how to add new text to a file, but how can I edit it?

Example: adding hello_world = 1 to test.txt using the following command:

echo "hello_world = 1" >> test.txt

But how can I change 1 to 0 or something else?

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Location: Honduras

Member since Sat, Jul 24, 2021

3 Years ago

answered 1 Year ago pilun · Accepted Answer

Using sed:

sed -i 's/1/0/g' test.txt

In general:

sed -i 's/oldstring/newstring/g' filename

See man sed for more info.