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-rw-r--r--sys/man/1/date14
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/man/1/date b/sys/man/1/date
index 7ad11ffab..cf38ad83d 100644
--- a/sys/man/1/date
+++ b/sys/man/1/date
@@ -6,6 +6,9 @@ date, clock \- date and time
[
.I option
] [
+.B -f
+.I format
+] [
.I seconds
]
.br
@@ -16,6 +19,8 @@ Print the date, in the format
.B
Tue Aug 16 17:03:52 CDT 1977
.PP
+Or the format specified by the format option.
+
The options are
.TP
.B -u
@@ -33,6 +38,13 @@ Report the date as ISO-8601 with time and timezone suffix.
.TP
.B -m
Report the date as an email compatible (RFC2822) time stamp.
+.TP
+.B -f
+Print using the format specified by the
+.I format
+string rather than the default. Format strings are in the format used by
+.IR tmdate (2)
+
.PP
The conversion from Greenwich Mean Time to local time depends on the
.B $timezone
@@ -65,3 +77,5 @@ into
.B /sys/src/cmd/date.c
.br
.B /sys/src/cmd/clock.c
+.SH "SEE ALSO"
+.IR tmdate (2)