DATE.1
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上传日期:2007-01-18
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- .TH DATE 1
- .SH NAME
- date - print or set the date and time
- .SH SYNOPSIS
- fBdate [fB-qsufR] [[fIMMDDYYfR]fIhhmmfR[fIssfR]] [fI+formatfR]fR
- .br
- .de FL
- .TP
- \fB\$1\fR
- \$2
- ..
- .de EX
- .TP 20
- \fB\$1\fR
- # \$2
- ..
- .SH OPTIONS
- .FL "-q" "Read the date from fIstdinfR"
- .FL "-s" "Set the time (implicit for fB-qfR or a date string)"
- .FL "-u" "Print the date as GMT"
- .FL "-t" "Use this number of seconds instead of current time"
- .SH EXAMPLES
- .EX "date" "Print the date and time"
- .EX "date 0221921610" "Set date to Feb 21, 1992 at 4:10 p.m."
- .SH DESCRIPTION
- .PP
- With the fB-qfR flag or a numeric argument,
- .I date
- sets the GMT time and date.
- .I MMDDYY
- refers to the month, day, and year;
- .I hhmmss
- refers to the hour, minute and second.
- Each of the six fields must be exactly two digits, no more and no less.
- .I date
- always display the date and time, with the default format for the system.
- The fB-ufR flag request GMT time instead of local time.
- A format may be specified with a + followed by a printf-like string with
- the following options:
- .ta 0.25i
- .nf
- .PP
- %% % character
- %A Name of the day
- %B Name of the month
- %D mm/dd/yy
- %H Decimal hour on 2 digits
- %I Decimal hour modulo 12 on 2 digits
- %M Decimal minute on 2 digits
- %S Decimal seconds on 2 digits
- %T HH:MM:SS
- %U Decimal week number, Sunday being first day of week
- %W Decimal week number, Monday being first day of week
- %X Same as %T
- %Y Decimal year on 4 digits
- %Z Time Zone (if any)
- %a Abbreviated name of the day
- %b Abbreviated name of the month
- %c Appropriate date & time (default format)
- %d Decimal day of the month on 2 digits
- %e Same as %d, but a space replaces leading 0
- %h Same as %b
- %j Decimal dey of the year on 3 digits
- %m Decimal month on 2 digits
- %n Newline character
- %p AM or PM
- %r 12-hour clock time with AM/PM
- %s Number of seconds since the epoch
- %t Tab character
- %w Decimal day of the week (0=Sunday)
- %x Same as %D
- %y Decimal year on 2 digits
- .SH "SEE ALSO"
- .BR time (2),
- .BR ctime (3),
- .BR readclock (8).