CODEWITHSUNDEEP
linuxshell
uss
uss

Reputation: 1309

How to grep lines that end with .c or .cpp?

I have a file as below, I want to grep for lines having .c or .cpp extension. I have tried using cat file|grep ".c" grep but I am getting all types of extensions as output. Please shed some light on this. Thanks in advance.

file contents are below:
/dir/a/b/cds/main.c
/dir/a/f/cmdss/file.cpp
/dir/a/b/cds/main.h
/dir/a/f/cmdss/file.hpp
/dir/a/b/cdys/main_abc.c
/dir/a/f/cmfs/file_123.cpp

Upvotes: 4

Views: 8417

Answers (4)

Patryk Gawroński
Patryk Gawroński

Reputation: 185

Also you can use --include parameter like below

grep --include \*.hpp --include \*.cpp your_search_pattern

Upvotes: 0

Michael Kazarian
Michael Kazarian

Reputation: 4462

$ grep -E '\.cp{2}?' testfile1 
/dir/a/b/cds/main.c
/dir/a/f/cmdss/file.cpp
/dir/a/b/cdys/main_abc.c
/dir/a/f/cmfs/file_123.cpp
$

May be this variant will useful. Here p{2} mean 'symbol p meet 2 times after symbol c'

Upvotes: 0

stdcall
stdcall

Reputation: 28920

The Android framework defines a bash function extensions named cgrep, it goes recursively in the project directory, and it's much faster than using grep -r.

Usage:
cgrep <expession to find>

it greps only C/C++ header and source files.

function cgrep()
{
    find . -name .repo -prune -o -name .git -prune -o -type f \( -name '*.c     ' -o -name '*.cc' -o -name '*.cpp' -o -name '*.h' \) -print0 | xargs -0 gre     p --color -n "$@"
}

You can paste this in you .bashrc file, or use the inline directly in shell.

Upvotes: -1

user1907906
user1907906

Reputation:

grep supports regular expressions.

$ grep -E '\.(c|cpp)$' input
  • -E means 'Interpret PATTERN as an extended regular expression'
  • \. means a dot .
  • () is a group
  • c|cpp is an alternative
  • $ is the lineend

Upvotes: 13

Related Questions