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A CLI Utility to extract text from files or stdin
Reading from stdin
shell
$ tnt 5 15 < seq 1 20
$ seq 1 20 | tnt 5 15
Reading from file
shell
$ seq 1 20 > my_seq.txt && tnt 5 15 -f my_seq.txt
Generating test data using seq I made 9,999,999 lines to test with.
I emulated the behaviour using tail and head and then ran it against tnt.
shell
$ seq 9999999 | time tail -9999998 | head -9999997 > /dev/null
tail -9999998 9.62s user 8.38s system 93% cpu 19.188 total
head -9999997 > /dev/null 3.12s user 5.18s system 48% cpu 17.220 total
The total time to extract took about 19 seconds
shell
$ seq 9999999 | time tnt 1 9999997 > /dev/null
tnt 1 9999997 > /dev/null 0.36s user 0.21s system 17% cpu 3.286 total
The same output took about 3 seconds with tnt