CODEWITHSUNDEEP
sedmatchfilenames
John Doe
John Doe

Reputation: 47

Sed. How to print lines matching pattern from another file?

I have file1 containing some text, like:

abcdef 123456 abcdef
ghijkl 789123 abcdef
mnopqr 123456 abcdef

and I have file2 containing single line of text which I want to use as pattern:

ghijkl 789123

How can I use second file as a pattern to print lines containing it to third file using sed? like file3:

ghijkl 789123 abcdef

I've tried to use

sed -ne "s/r file2//p" file1 > file3

But the content of file3 is blank for some reason P.S. using Windows

Upvotes: 1

Views: 1261

Answers (3)

marian0
marian0

Reputation: 654

This is the simplest sed solution on linux: sed -n /`<file2`/p file1 > file3, but windows does not provides backticks. So the windows work-around would be:

set /p PATERN=<file2
sed -n /%PATERN%/p file1 > file3

Upvotes: 0

Jan Nielsen
Jan Nielsen

Reputation: 11829

The sed solution is:

    cat f2.txt | xargs -I {} sed -n "/{}/p" f1.txt > f3.txt

but, as @Cyrus correctly notes, grep is the proper tool for this solution and it's much nicer:

    grep -f f2.txt f1.txt > f3.txt

Note: using these incredibly powerful *nix tools like sed, grep, cat, xargs, bash, etc. on Microsoft Windows can be frustrating. Consider spinning up a Linux environment, instead -- you'll save yourself many hours of grief dealing with subtle path and environment issues from emulators like Cygwin, etc.

Upvotes: 0

Cyrus
Cyrus

Reputation: 88756

If you have sed, do have access to grep?

grep -f file2 file1 > file3

Upvotes: 2

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