command http://pubs.opengroup.org/onlinepubs/9699919799/utilities/command.html getconf http://pubs.opengroup.org/onlinepubs/000095399/utilities/getconf.html paste http://pubs.opengroup.org/onlinepubs/009696799/utilities/paste.html bc http://pubs.opengroup.org/onlinepubs/000095399/utilities/bc.html at http://pubs.opengroup.org/onlinepubs/000095399/utilities/at.html
It seems docs/posix_conformance.txt is bit out of date. Update on current state of busybox: command: + $ ./busybox ash -c 'command -v ls' /usr/bin/ls getconf: +:( $ ./busybox getconf -h getconf: applet not found paste: + $ ./busybox paste -h paste: invalid option -- 'h' BusyBox v1.32.0.git (2020-03-11 13:06:13 CET) multi-call binary. Usage: paste [OPTIONS] [FILE]... Paste lines from each input file, separated with tab -d LIST Use delimiters from LIST, not tab -s Serial: one file at a time bc: + $ ./busybox bc -h bc: invalid option -- 'h' BusyBox v1.32.0.git (2020-03-11 13:06:13 CET) multi-call binary. Usage: bc [-sqlw] FILE... Arbitrary precision calculator -q Quiet -l Load standard math library -s Be POSIX compatible -w Warn if extensions are used $BC_LINE_LENGTH changes output width at: +:( $ ./busybox at -h at: applet not found getconf and at are missing completely, not sure if the other are POSIX compliant but at least they are present.