Enable WARNS=4 by default for usr.bin, except for:
awk bdes checknr compile_et error gss hxtool kgetcred kinit
klist ldd less lex locale login m4 man menuc mk_cmds
mklocale msgc openssl rpcgen rpcinfo sdiff spell ssh
string2key telnet tn3270 verify_krb5_conf xlint

branches: 1.5.36;
Resurrect which(1), blessed by core.

RCS ID police

4.4-Lite version, slightly edited.

Add RCS identifiers.

branches: 1.1.1;
Initial revision

Sort sections. From Henning Petersen in PR 49222.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Return non-zero exit status if the listed programs aren't found.
Submitted by Gabriel Gonzalez in PR bin/20984
I deviated from the patch by returning 2 if only some programs were
located and 3 if none were. The submitted patch returned 1 and 2,
respectively, and 1 is already used for general error.

Whitespace cleanup.

add comma between xrefs in SEE ALSO

branches: 1.10.10;
More and more .Os cleanups. .Os is defined in the tmac.doc-common file,
so we shouldn't override it with versions in the manpages. Many more to
come.

Add .Xr which 1

Apply patch, KNF'd, from PR#3363 to add a "-p" option to whereis.

macroize BSD, NetBSD, FreeBSD and misc cleanup

fix .Nm usage

WARNSify; clean up .Nm usage

Sync with 44lite2

4.4-Lite version, slightly edited.

Add RCS indentifiers.

branches: 1.1.1;
Initial revision

PR bin/59449: use setregid(2)/setreuid(2) instead of setgid(2)/setuid(2)

This allows the calls to succeed when a non-root user runs
with e[gu]id != [gu]id and then produce the correct output.

Fix suggested by @kre.

branches: 1.21.72;
Fix a bug in which which(1) would check only the first element of the
path for all args except the first. So "which cp vi" found /bin/cp
using the first entry in the path, but failed to find /usr/bin/vi
using the second entry in the path, although "whereis cp vi" worked.
Restoring the ":" was done in the wrong place.

Also fix a bug in which an arg beginning with "/" would cause all
subsequent args to be ignored. A "break" should have been "continue".
Add comments to all break and continue statements saying what they are
intended to do.

Also add braces around the body of a for loop which contained only one
multi-line statement.

Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

branches: 1.19.6;
convert __attribute__s to applicable cdefs.h macros

branches: 1.18.10;
Apply patch from Michael van Elst to fix PR bin/34114:
which doesn't handle commands given as absolute pathnames.

branches: 1.17.2; 1.17.4;
PR/25680: Christian Biere: whereis/which return invalid information with
huge path

Set our uid and gid to the effective user and group id's of the current
process so that access(2) DTRT's (from Peter Postma).

Fix const problem.

- add which(1) functionality.
- fix bug where if a program appeared in more than one place it would
erroneously exit(2)
- fix error messages to use err and errx as appropriate.
- made sure we don't pick up directories or non executable files.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22365, verified by myself.

Return non-zero exit status if the listed programs aren't found.
Submitted by Gabriel Gonzalez in PR bin/20984
I deviated from the patch by returning 2 if only some programs were
located and 3 if none were. The submitted patch returned 1 and 2,
respectively, and 1 is already used for general error.

err/errx/warn/warnx do not need \n at the end

Since our gcc doesn't warn about NULL format strings anymore, we can
fix the incorrect err(1, "%s", "") et al.
Closes PR bin/7592 by cgd.

branches: 1.9.6;
Apply patch, KNF'd, from PR#3363 to add a "-p" option to whereis.

WARNSify; clean up .Nm usage

return 0 on successful exit, compare getopt() result to -1 instead of EOF.

Sync with 44lite2

4.4-Lite version, slightly edited.

Use <dirent.h> instead of <sys/dir.h>.

Add RCS identifiers.

/usr/src/usr.lib --> /usr/src/lib, and add some /usr/src/gnu paths.

branches: 1.1.1;
Initial revision

remove unnecessary quotes

which.1: minor grammar and style consistency fixes

No trailing whitespace

Resurrect which(1), blessed by core.