Combine the lines from two files in every combination. Apparently that's called the cartesian product but don't quote me on that.
▶ go get -u github.com/tomnomnom/comb
Or download a binary and put
it somewhere in your $PATH (e.g. /usr/bin/comb).
▶ comb -h
Combine the lines from two files in every combination
Usage:
comb [OPTIONS] <prefixfile> <suffixfile>
Options:
-f, --flip Flip mode (order by suffix)
-s, --separator <str> String to place between prefix and suffix
Normal mode:
▶ cat prefixes
1
2
▶ cat suffixes
A
B
C
▶ comb prefixes suffixes
1A
1B
1C
2A
2B
2C
Flip mode (order by suffix):
▶ comb --flip prefixes suffixes
1A
2A
1B
2B
1C
2C
Separator:
▶ comb --separator="-" prefixes suffixes
1-A
1-B
1-C
2-A
2-B
2-C
Yes, but it's a PITA to type this:
▶ while read prefix; do while read suffix; do echo $prefix$suffix; done < suffixes; done < prefixes
1A
1B
1C
2A
2B
2C