ref: 66892eb133865ec02faa8e64cdfa2f867f9e1e87
dir: /sys/src/ape/cmd/README/
This is an attempt to make the utilities specified in POSIX 1002.3 available, assuming /$objtype/ape/bin and /lib/rc/ape are bound to /bin before the regular bin directories. Here's a brief description of the status of these commands. EXECUTION ENVIRONMENT UTILITIES awk Plan 9 awk. system() uses rc instead of sh. basename POSIX conforming bc Plan 9 bc. cat Plan 9 cat. no -u option (for byte-at-at-time) cd shell builtins doesn't use $HOME or $CDPATH chgrp Plan 9 chgrp. no -R option (for recursive chgrp). only takes name, not number chmod Plan 9 chmod. no -R option (for recursive chmod). no s (setuid) and X (conditional x) perms. nonstandard a,l perms. chown Always prints 'Permission denied' and fails. cksum not implemented cmp Plan 9 cmp. nonstandard -L option no line number printed; hex instead of octal for bytes comm Plan 9 comm. command not implemented cp Plan 9 cp. no -R and -r (recursive), -i (interactive), -p (preserve) options nonstandard -z option cut not implemented date Plan 9 date. no format option nonstandard -n option dd Plan 9 dd. diff Plan 9 diff. can't have both files directories no -r (recursive) option -c<n> instead of -c and -C <n> for context dirname POSIX conforming echo Plan 9 echo ed Plan 9 ed nonstandard b,wq commands env not implemented expr V10 expr (seems to be like POSIX) false POSIX conforming find not implemented fold not implemented getconf not implemented getopts not implemented grep script calling Plan 9 grep -G s means q, should mean forget nonexistent files nonstandard 1,b,L,q options head not implemented id not implemented join not implemented kill V10 kill no -s signalname, no -l arg ln not implemented locale not implemented localedef not implemented logger not implemented logname not implemented lp Plan 9 lp ls Plan 9 ls mailx not implemented mkdir Plan 9 mkdir mkfifo not implemented mv Plan 9 mv nohup not implemented od not implemented paste not implemented pathchk not implemented pax implemented pr Plan 9 pr printf not implemented pwd Plan 9 pwd read shell builtin rm Plan 9 rm rmdir script no -p option sed v10 sed sh ksh93 -- POSIX compliant sleep Plan 9 sleep sort Plan 9 sort stty POSIX compliant (sort of) tail Plan 9 tail tee Plan 9 tee test Plan 9 test (POSIX compliant); copied as [ touch Plan 9 touch tr Plan 9 tr true POSIX compliant umask noop SOFTWARE DEVELOPMENT UTILITIES (OPTIONAL) ar script to call Plan9 ar, after arg conversion make V10 make strip not implemented C LANGUAGE DEVELOPMENT UTILITIES OPTION c89 script to APE environment cc (also avaiable as cc) lex Plan 9 lex yacc script to Plan 9 yacc General Bugs: The environment variables LANG, LC_ALL, LC_CTYPE, and LC_MESSAGES are ignored. The use of -- as an argument to stop option processing is generally not done. The many 'not implemented' functions will be implemented as scripts using them show up.