Provided by: wannier90_3.1.0+ds-8ubuntu1_amd64 

NAME
w90chk2chk.x - convert wannier90.x checkpoint file between machine-dependent and machine-independent
formats
SYNOPSIS
w90chk2chk.x [options] [seedname]
OPTIONS
-u2f, -export
Convert from unformatted (standard) format to formatted format, to export
the checkpoint file on a different machine.
The seedname.chk file is read and the seedname.chk.fmt file is generated.
-f2u, -import
Convert from formatted format to unformatted (standard) format, to import
the checkpoint file seedname.chk.fmt from a different machine.
The seedname.chk.fmt file is read and the seedname.chk file is generated.
seedname
If a seedname string is given the code will read its input from a file
seedname.chk. The default value is wannier. One can also equivalently
provide the string seedname.chk instead of seedname.
w90chk2chk.x(1)