stealth / grab Goto Github PK

grep could search in several files/dirs:

grep -r help dir*

and finds string in all files/dirs. grab can't do this.

I am trying to found a number of pattern searched in the file. But it doesn't show me any output that how much pattern are found. If anyone can help me. It means alot.

I can't pipe to grab, which makes me sad.

$ make
c++ -Wall -O2 -I/usr/local/include -DBUILD_WITH_PARALLELISM -L/usr/local/lib -lpcre -pthread grab.cc -o grab
grab.cc:439:3: error: unknown type name 'cpu_set_t'
                cpu_set_t cpuset;
                ^
1 error generated.
make: *** [grab] Error 1

and

$ gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin14.0.0
Thread model: posix

grab.cc:226:69: error: use of undeclared identifier 'MAP_POPULATE'
PROT_READ, MAP_PRIVATE||MAP_NORESERVE|MAP_POPULATE,
^
grab.cc:401:3: error: unknown type name 'cpu_set_t'
cpu_set_t cpuset;

It is always great to see new grep projects. I always had the feeling that grepping is mostly limited by disk reading speed rather than regex engines, so it is worth to explore newer methods whenever it is possible.

Please be aware that the pcre1 development has has been ended since 2015, and projects (especially new ones) should use its new API called pcre2. Pcre1 is unlikely to see a new release, so some issues will never be fixed. Pcre2 is better, faster, etc. but most importantly: maintained.