This is simple "tree like" program, that prints files and directories recursively, with color output.

$./dirls /tmp
[/tmp]
'-> [dirls_test]
'    '-> main.c (1853 k)
'    '-> macro.h (506 k)
'    '-> head.h (433 k)
'    '-> README.md (102 k)
'    '-> Makefile (100 k)
'-> [data_plot]
'    '-> data.db (805888 k)
'-> file.db (0 k)
'-> [to_copy]
'    '-> convert.sh (107 k)
'    '-> xsetroot.sh (260 k)
'    '-> xset.sh (82 k)
'    '-> wifi.sh (179 k)
'    '-> takevideo.sh (200 k)
'    '-> takescreenshot.sh (89 k)
'    '-> takepic.sh (312 k)
'    '-> show_last_n_rows_sql.sh (244 k)
'    '-> restore_file.sh (0 k)
'    '-> rename.sh (98 k)
'    '-> qemu.sh (535 k)
'    '-> privoxy-blocklist.sh (7465 k)
'    '-> pkg_traffic.sh (721 k)
'    '-> loadavg.sh (53 k)
'    '-> gentoo_upgrade.sh (53 k)
'    '-> cpu_usage.sh (117 k)
'    '-> cpu_mode.sh (237 k)
'    '-> colors.sh (770 k)
'    '-> bytes_traffic.sh (645 k)
'-> sleep.log (71 k)
'-> [pulse-D0aT2ujuPE6p]