> cd /categories/ctf/

> ls -l

total 6

-rw-r--r--   3519 2022-04-04 ritsec-ctf-2022-write-up.md

-rw-r--r--   4198 2021-09-19 hcktivity-con-ctf-2021-write-up.md

-rw-r--r--   3519 2021-04-12 ritsec-ctf-2021-write-up.md

-rw-r--r--   3616 2021-04-05 b01lers-ctf-2021-write-up.md

-rw-r--r--   3325 2021-03-29 umassctf-2021-write-up.md

-rw-r--r--   3422 2021-01-26 shadowctf-2021-write-up.md