To get the lines between the two pattern in a file in BOSS Linux

To get the lines between the two pattern in a file.txt use the following sed command format



sed -n "/pattern1/,/pattern2/p" file.txt

Edit a file directly using "sed" command in Linux

sed is stream editor, but can edit files directly

sed -i -e 's/foo/bar/g' hello.txt

s is used to replace the found expression "foo" with "bar" and g used to

replace any found matches.

-i option is used to edit in place on hello.txt.

-e option indicates a command to run.