config/git: import suckless sbase

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>

1 files changed, 47 insertions, 0 deletions

diff --git a/util/sbase/env.1 b/util/sbase/env.1
new file mode 100644
index 00000000..f25f54b1
--- /dev/null
+++ b/util/sbase/env.1
@@ -0,0 +1,47 @@
+.Dd October 8, 2015
+.Dt ENV 1
+.Os sbase
+.Sh NAME
+.Nm env
+.Nd modify the environment, then print it or run a command
+.Sh SYNOPSIS
+.Nm
+.Op Fl i
+.Oo Fl u Ar var Oc ...
+.Oo Ar var Ns = Ns Ar value Oc ...
+.Oo Ar cmd Oo arg ... Oc Oc
+.Sh DESCRIPTION
+.Nm
+unsets each
+.Ar var ,
+then adds or sets each
+.Ar ( var , value )
+tuple in the environment.
+.Pp
+If
+.Ar cmd
+is given, it is executed in this new environment;
+otherwise, the modified environment is printed to stdout.
+.Sh OPTIONS
+.Bl -tag -width Ds
+.It Fl i
+Completely ignore the existing environment and execute
+.Ar cmd
+only with each
+.Ar ( var , value )
+tuple specified.
+.It Fl u Ar var
+Unset
+.Ar var
+in the environment.
+.El
+.Sh SEE ALSO
+.Xr printenv 1 ,
+.Xr putenv 3 ,
+.Xr environ 7
+.Sh STANDARDS
+POSIX.1-2013.
+.Pp
+The
+.Op Fl u
+flag is an extension to that specification.