mirror of
https://codeberg.org/libreboot/lbmk.git
synced 2026-03-26 13:59:02 +02:00
e9a910b33c
i currently use the output of sha512sum in several places of xbmk, which is a bit unreliable in case output changes. other cases where i use util outputs in variables are probably reliable, because i'm using mostly posix utilities in those. to mitigate this, i now import suckless sbase, which has a reasonable sha512sum implementation. *every* binary it builds is being placed in build.list, because i'll probably start using more of them. for example, i may start modifying the "date" implementation, adding the GNU-specific options that i need as mentioned on init.sh i'm importing it in util/ because the sha512sum util is needed for verifying project sources, so if sbase itself is a "project source", that means we can into a chicken and egg bootstrapping problem. this is sbase at revision: 055cc1ae1b3a13c3d8f25af0a4a3316590efcd48 Signed-off-by: Leah Rowe <leah@libreboot.org>
82 lines
1.5 KiB
Groff
82 lines
1.5 KiB
Groff
.Dd October 8, 2015
|
|
.Dt DATE 1
|
|
.Os sbase
|
|
.Sh NAME
|
|
.Nm date
|
|
.Nd print or set date and time
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl d Ar time
|
|
.Op Fl u
|
|
.Oo
|
|
.Cm + Ns Ar format |
|
|
.Sm off
|
|
.Ar mmddHHMM Oo Oo Ar CC Oc Ar yy Oc
|
|
.Sm on
|
|
.Oc
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
prints the date and time according to
|
|
.Xr locale 7
|
|
or
|
|
.Ar format
|
|
using
|
|
.Xr strftime 3
|
|
or sets the date.
|
|
.Sh OPTIONS
|
|
.Bl -tag -width Ds
|
|
.It Fl d Ar time
|
|
Print
|
|
.Ar time
|
|
given as the number of seconds since the
|
|
Unix epoch 1970-01-01T00:00:00Z.
|
|
.It Fl u
|
|
Print or set UTC time instead of local time.
|
|
.El
|
|
.Pp
|
|
An operand with a leading plus
|
|
.Pq Cm +
|
|
sign signals a user-defined format string using
|
|
.Xr strftime 3
|
|
conversion specifications.
|
|
.Pp
|
|
An operand without a leading plus sign is interpreted as a value
|
|
for setting the system's current date and time.
|
|
The canonical representation for setting the date and time is:
|
|
.Pp
|
|
.Bl -tag -width Ds -compact -offset indent
|
|
.It Ar mm
|
|
The month of the year, from 01 to 12.
|
|
.It Ar dd
|
|
The day of the month, from 01 to 31.
|
|
.It Ar HH
|
|
The hour of the day, from 00 to 23.
|
|
.It Ar MM
|
|
The minute of the hour, from 00 to 59.
|
|
.It Ar CC
|
|
The first two digits of the year (the century).
|
|
.It Ar yy
|
|
The second two digits of the year.
|
|
If
|
|
.Ar yy
|
|
is specified, but
|
|
.Ar CC
|
|
is not, a value for
|
|
.Ar yy
|
|
between 69 and 99 results in a
|
|
.Ar CC
|
|
value of 19.
|
|
Otherwise, a
|
|
.Ar CC
|
|
value of 20 is used.
|
|
.El
|
|
.Pp
|
|
The century and year are optional.
|
|
The default is the current year.
|
|
.Sh STANDARDS
|
|
POSIX.1-2013.
|
|
.Pp
|
|
The
|
|
.Op Fl d
|
|
flag is an extension to that specification.
|