I'm using busybox in a embedded system, and I would like to check its version. How do I check the busybox version from within busybox?
Invoke the busybox binary as busybox, and you get a line with the Busybox version, a few more lines of fluff, and the list of utilities included in the binary.
busybox | head -1
Most utilities show a usage message if you call them with --help, with the version number in the first line.
ls --help 2>&1 | head -1
answered Jun 30 '11 at 20:13
Gilles 'SO- stop being evil'Gilles 'SO- stop being evil'
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You can check the version on any system running busybox by running any of the commands with the --help flag to see usage. The first line of the usage calls includes a note about the busybox version:
$ cat --help
BusyBox v1.18.4 (2011-03-13 15:36:03 CET) multi-call binary.
Usage: cat [FILE]...
Concatenate FILEs and print them to stdout
If you are not running busybox but have it installed on your system, you can check by instantiating one of the utilities like so:
$ busybox cat --help
(Edit: As Gilles notes you can also call the busybox binary without a command and get the same header)
Lastly, there is also a note at the end of the man page that shows what version it's from:
$ man busybox | tail -n 1
version 1.18.4 2011-03-13 BUSYBOX(1)
-
I'm using busybox in a embedded system. If I type
cat --versionon it, it showscat: unrecognized option '--version'. – Tom Brito Jul 4 '11 at 13:20 -
I also tried with
ls --versionwith the same resultls: unrecognized option '--version'– Tom Brito Jul 4 '11 at 13:22 -
@Tom, actually @Gilles has the right answer here, it's in the header of anything you run, so running the
busyboxbinary directly makes the most sense. Mine only works for the same reason and throws an error besides. I'll correct it. – Caleb Jul 4 '11 at 15:15 -
Does it not report the version when you connect,
i.e.
telnet 10.10.10.1
BusyBox v0.61.pre (2008.06.11-10:37+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.
#
or run (for example)
# busybox ash
BusyBox v1.17.1 (Debian 1:1.17.1-8) built-in shell (ash)
Enter 'help' for a list of built-in commands.
#
answered Jun 30 '11 at 18:45
Since it hasn't been mentioned, sh --help also works.
# sh --help
BusyBox v1.27.1 (2020-06-11 08:53:57 UTC) multi-call binary.
Usage: sh [-/+OPTIONS] [-/+o OPT]... [-c 'SCRIPT' [ARG0 [ARGS]] / FILE [ARGS]]
Unix shell interpreter
# _
