for eg. input :
// copyright
package com.base
import com.base
import com.base
...
i want to replace the pattern "// copyright\n\n^package.*" with another string
i'm trying to do using
sed -e 's/.,^package/$(anotherString)/g' $text
1 Answer
Using sed
Here is a sed solution:
$ sed '\|// copyright|,\|^package|{s/^package/Something\nElse/p;d}' file
Something
Else com.base
import com.base
import com.base
...
Did you want to remove all of the original package line? If so, just a minor change is needed:
$ sed '\|// copyright|,\|^package|{s/^package.*/Something\nElse/p;d}' file
Something
Else
import com.base
import com.base
...
Using awk
$ awk '/^\/\/ copyright/,/^package/{if (/^package/) print "Something\nElse"; next} 1' file
Something
Else
import com.base
import com.base
...
-
I get
"\|// copyright|,\|^pack ...": extra characters at the end of d commanderror using the firstsedcommand (bash on macOS) - any ideas what's wrong?adamsfamily– adamsfamily2021-04-20 09:22:54 +00:00Commented Apr 20, 2021 at 9:22 -
@adamsfamily MacOS uses BSD tools instead of GNU. That makes for a wide variety of minor yet annoying incompatibilities. I don't have access to BSD tools to test this on but, based on past experience, I suspect that an extra semicolon is needed: try
sed '\|// copyright|,\|^package|{s/^package/Something\nElse/p;d;}' fileJohn1024– John10242021-04-20 21:36:48 +00:00Commented Apr 20, 2021 at 21:36 -
thank you, it works like a charm! However, I just realized it hasn't entirely solved my problem, I have created another question if you are interested in checking it out: unix.stackexchange.com/questions/647980/… - thanks!adamsfamily– adamsfamily2021-05-04 06:17:48 +00:00Commented May 4, 2021 at 6:17
// copyrightandpackage ...? One or two ? Your example has one empty line in between but you're saying you want to replace// copyright\n\npackage.*which means two empty lines in between...