cxx_utils

Small utilities

rand_line

Reads a file passed as argument and returns a random line from it:

$ ./rand_line /usr/share/dict/words
puddle

lurker

Simple grep-like utility. Recursively scans current directory for specific pattern. For now accepts only string and doesn't print anything except matched lines:

$ ./lurker random_device
./src/bulls_and_cows.cxx
10:    random_device rd;
./src/rand_line.cxx
26:    random_device rd;

rand_int

Generates random numbers in specified range:

$ ./rand_int 1 6 3
3
5
2
$ ./rand_int -2 2 2
-1
2

valid_ip_address

Tests if passed string is a valid IP address.

$ ./valid_ip_address --address ::1 # returns 0
$ ./valid_ip_address --address 127.0.0.1 # returns 0
$ ./valid_ip_address --address dog # returns 1