table of contents
SETARCH(8) | System Administration | SETARCH(8) |
NAME¶
setarch - change reported architecture in new program environment and set personality flagsSYNOPSIS¶
setarch arch [options] [program [argument...]]arch [options] [program [argument...]]
setarch --list|-h|-V
DESCRIPTION¶
setarch currently only affects the output of uname -m. For example, on an AMD64 system, running setarch i386 program will cause program to see i686 instead of x86_64 as the machine type. It also allows to set various personality options. The default program is /bin/sh.OPTIONS¶
- --list
- List the architectures that setarch knows about. Whether setarch can actually set each of these architectures depends on the running kernel.
- --uname-2.6
- Causes the program to see a kernel version number beginning with 2.6.
- -v, --verbose
- Be verbose.
- -3, --3gb
- Specifies that processes should use a maximum of 3GB of address space on systems where it is supported (ADDR_LIMIT_3GB).
- --4gb
- Ignored (for backward compatibility only).
- -B, --32bit
- Turns on ADDR_LIMIT_32BIT.
- -F, --fdpic-funcptrs
- Userspace function pointers point to descriptors (turns on FDPIC_FUNCPTRS).
- -I, --short-inode
- Turns on SHORT_INODE.
- -L, --addr-compat-layout
- Changes the way virtual memory is allocated (turns on the ADDR_COMPAT_LAYOUT).
- -R, --addr-no-randomize
- Disables randomization of the virtual address space (turns on ADDR_NO_RANDOMIZE).
- -S, --whole-seconds
- Turns on WHOLE_SECONDS.
- -T, --sticky-timeouts
- Turns on STICKY_TIMEOUTS.
- -X, --read-implies-exec
- Turns on READ_IMPLIES_EXEC.
- -Z, --mmap-page-zero
- Turns on MMAP_PAGE_ZERO.
- -V, --version
- Display version information and exit.
- -h, --help
- Display help text and exit.
EXAMPLES¶
setarch ppc32 rpmbuild --target=ppc --rebuild foo.src.rpmsetarch ppc32 -v -vL3 rpmbuild --target=ppc --rebuild bar.src.rpm
setarch ppc32 --32bit rpmbuild --target=ppc --rebuild foo.src.rpm
AUTHOR¶
Elliot LeeJindrich Novy
AVAILABILITY¶
The setarch command is part of the util-linux package and is available from Linux Kernel Archive.December 2014 | util-linux |