Date: Thu, 7 May 2015 20:54:38 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r282608 - head/bin/date Message-ID: <201505072054.t47Kscmh065939@svn.freebsd.org>
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Author: delphij Date: Thu May 7 20:54:38 2015 New Revision: 282608 URL: https://svnweb.freebsd.org/changeset/base/282608 Log: date(1): Make -r behave like GNU's version when the option can not be interpreted as a number, which checks the file's modification time and use that as the date/time value. This improves compatibility with GNU coreutils's version of time(1). MFC after: 2 weeks Modified: head/bin/date/date.1 head/bin/date/date.c Modified: head/bin/date/date.1 ============================================================================== --- head/bin/date/date.1 Thu May 7 20:25:17 2015 (r282607) +++ head/bin/date/date.1 Thu May 7 20:54:38 2015 (r282608) @@ -32,7 +32,7 @@ .\" @(#)date.1 8.3 (Berkeley) 4/28/95 .\" $FreeBSD$ .\" -.Dd April 26, 2014 +.Dd May 7, 2015 .Dt DATE 1 .Os .Sh NAME @@ -41,7 +41,7 @@ .Sh SYNOPSIS .Nm .Op Fl jRu -.Op Fl r Ar seconds +.Op Fl r Ar seconds | Ar filename .Oo .Fl v .Sm off @@ -150,6 +150,9 @@ is the number of seconds since the Epoch see .Xr time 3 ) , and can be specified in decimal, octal, or hex. +.It Fl r Ar filename +Print the date and time of the last modification of +.Ar filename . .It Fl t Ar minutes_west Set the system's value for minutes west of .Tn GMT . Modified: head/bin/date/date.c ============================================================================== --- head/bin/date/date.c Thu May 7 20:25:17 2015 (r282607) +++ head/bin/date/date.c Thu May 7 20:54:38 2015 (r282608) @@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/time.h> +#include <sys/stat.h> #include <ctype.h> #include <err.h> @@ -85,6 +86,7 @@ main(int argc, char *argv[]) struct vary *v; const struct vary *badv; struct tm lt; + struct stat sb; v = NULL; fmt = NULL; @@ -116,8 +118,12 @@ main(int argc, char *argv[]) case 'r': /* user specified seconds */ rflag = 1; tval = strtoq(optarg, &tmp, 0); - if (*tmp != 0) - usage(); + if (*tmp != 0) { + if (stat(optarg, &sb) == 0) + tval = sb.st_mtim.tv_sec; + else + usage(); + } break; case 't': /* minutes west of UTC */ /* error check; don't allow "PST" */
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