I use OpenFoam 7 and Ubuntu 20.04.1 LTS.
When I compile the code OpenFoam 6 located in the TurbulenceInflowTool folder, I will able to run the model with DFM and SEM inflow with uniform velocity at the inlet. However, I cannot run it with exponential velocity profile at the inlet and I got the mentioned error.
Whereas, when removed the platforms folder and again I compile the code OpenFoam 7 located in the TurbulenceInflowTool folder, I will not be able to run the model with DFM, SEM, and DFSEM inflow with uniform velocity at the inlet. I got the error related to IOstream.C at line 109.
I have uname.1.gz and uname.2.gz and not uname -a.
uname.1.gz:
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.47.3.
.TH UNAME "1" "September 2019" "GNU coreutils 8.30" "User Commands"
.SH NAME
uname \- print system information
.SH SYNOPSIS
.B uname
[\fI\,OPTION\/\fR]...
.SH DESCRIPTION
.\" Add any additional description here
.PP
Print certain system information. With no OPTION, same as \fB\-s\fR.
.TP
\fB\-a\fR, \fB\-\-all\fR
print all information, in the following order,
except omit \fB\-p\fR and \fB\-i\fR if unknown:
.TP
\fB\-s\fR, \fB\-\-kernel\-name\fR
print the kernel name
.TP
\fB\-n\fR, \fB\-\-nodename\fR
print the network node hostname
.TP
\fB\-r\fR, \fB\-\-kernel\-release\fR
print the kernel release
.TP
\fB\-v\fR, \fB\-\-kernel\-version\fR
print the kernel version
.TP
\fB\-m\fR, \fB\-\-machine\fR
print the machine hardware name
.TP
\fB\-p\fR, \fB\-\-processor\fR
print the processor type (non\-portable)
.TP
\fB\-i\fR, \fB\-\-hardware\-platform\fR
print the hardware platform (non\-portable)
.TP
\fB\-o\fR, \fB\-\-operating\-system\fR
print the operating system
.TP
\fB\-\-help\fR
display this help and exit
.TP
\fB\-\-version\fR
output version information and exit
.SH AUTHOR
Written by David MacKenzie.
.SH "REPORTING BUGS"
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
.br
Report uname translation bugs to <https://translationproject.org/team/>
.SH COPYRIGHT
Copyright \(co 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
arch(1), uname(2)
.PP
.br
Full documentation at: <https://www.gnu.org/software/coreutils/uname>
.br
or available locally via: info \(aq(coreutils) uname invocation\(aq
uname.2.gz
.\" Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>.
.\"
.\" %%%LICENSE_START(VERBATIM)
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\" %%%LICENSE_END
.\"
.\" 2007-07-05 mtk: Added details on underlying system call interfaces
.\"
.TH UNAME 2 2019-10-10 "Linux" "Linux Programmer's Manual"
.SH NAME
uname \- get name and information about current kernel
.SH SYNOPSIS
.B #include <sys/utsname.h>
.PP
.BI "int uname(struct utsname *" buf );
.SH DESCRIPTION
.BR uname ()
returns system information in the structure pointed to by
.IR buf .
The
.I utsname
struct is defined in
.IR <sys/utsname.h> :
.PP
.in +4n
.EX
struct utsname {
char sysname[]; /* Operating system name (e.g., "Linux") */
char nodename[]; /* Name within "some implementation-defined
network" */
char release[]; /* Operating system release (e.g., "2.6.28") */
char version[]; /* Operating system version */
char machine[]; /* Hardware identifier */
#ifdef _GNU_SOURCE
char domainname[]; /* NIS or YP domain name */
#endif
};
.EE
.in
.PP
The length of the arrays in a
.I struct utsname
is unspecified (see NOTES);
the fields are terminated by a null byte (\(aq\e0\(aq).
.SH RETURN VALUE
On success, zero is returned.
On error, \-1 is returned, and
.I errno
is set appropriately.
.SH ERRORS
.TP
.B EFAULT
.I buf
is not valid.
.SH CONFORMING TO
POSIX.1-2001, POSIX.1-2008, SVr4.
There is no
.BR uname ()
call in 4.3BSD.
.PP
The
.I domainname
member (the NIS or YP domain name) is a GNU extension.
.SH NOTES
This is a system call, and the operating system presumably knows
its name, release and version.
It also knows what hardware it runs on.
So, four of the fields of the struct are meaningful.
On the other hand, the field
.I nodename
is meaningless:
it gives the name of the present machine in some undefined
network, but typically machines are in more than one network
and have several names.
Moreover, the kernel has no way of knowing
about such things, so it has to be told what to answer here.
The same holds for the additional
.I domainname
field.
.PP
To this end, Linux uses the system calls
.BR sethostname (2)
and
.BR setdomainname (2).
Note that there is no standard that says that the hostname set by
.BR sethostname (2)
is the same string as the
.I nodename
field of the struct returned by
.BR uname ()
(indeed, some systems allow a 256-byte hostname and an 8-byte nodename),
but this is true on Linux.
The same holds for
.BR setdomainname (2)
and the
.I domainname
field.
.PP
The length of the fields in the struct varies.
Some operating systems
or libraries use a hardcoded 9 or 33 or 65 or 257.
Other systems use
.B SYS_NMLN
or
.B _SYS_NMLN
or
.B UTSLEN
or
.BR _UTSNAME_LENGTH .
Clearly, it is a bad
idea to use any of these constants; just use sizeof(...).
Often 257 is chosen in order to have room for an internet hostname.
.PP
Part of the utsname information is also accessible via
.IR /proc/sys/kernel/ { ostype ,
.IR hostname ,
.IR osrelease ,
.IR version ,
.IR domainname }.
.SS C library/kernel differences
.PP
Over time, increases in the size of the
.I utsname
structure have led to three successive versions of
.BR uname ():
.IR sys_olduname ()
(slot
.IR __NR_oldolduname ),
.IR sys_uname ()
(slot
.IR __NR_olduname ),
and
.IR sys_newuname ()
(slot
.IR __NR_uname) .
The first one
.\" That was back before Linux 1.0
used length 9 for all fields;
the second
.\" That was also back before Linux 1.0
used 65;
the third also uses 65 but adds the
.I domainname
field.
The glibc
.BR uname ()
wrapper function hides these details from applications,
invoking the most recent version of the system call provided by the kernel.
.SH SEE ALSO
.BR uname (1),
.BR getdomainname (2),
.BR gethostname (2),
.BR uts_namespaces (7)
.SH COLOPHON
This page is part of release 5.05 of the Linux
.I man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
\%https://www.kernel.org/doc/man\-pages/.
Thank you in advance.