commands have different size

[Piero_2]

Hi there,

have anybody an idea why the commands included in /sbin are bigger than the similar ones in /usr/bin?
Have a look at chmod and ls, for example.

Tks in advance.

Piero

[Pete Randall · Accepted solution]

The commands in /sbin are statically linked - that is everything is included so that when you boot in single user mode, the commands will run while /usr is not mounted. The commands in /usr/bin are dynamically linked and require shared libraries in order to execute - not possible in single user mode.


Pete

[Peter Godron]

Piero,
covered in earlier thread:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=514511

[Peter Godron]

Piero,
sorry for the follow-up. (No points please)

You can check this yourself with:
$ file /usr/bin/ls /sbin/ls
/usr/bin/ls: PA-RISC1.1 shared executable dynamically linked
/sbin/ls: PA-RISC1.1 shared executable

[spex]

Hi Piero,

'ldd' will also demonstrate the difference between statically- and dynamically-linked files:

# ldd /sbin/cat
ldd: "/sbin/cat" is not a shared executable.
# ldd /usr/bin/cat
/usr/lib/libc.2 => /usr/lib/libc.2
/usr/lib/libdld.2 => /usr/lib/libdld.2
/usr/lib/libc.2 => /usr/lib/libc.2

PCS

[Gary Cantwell]

Hi Piero,

Please take a moment to assign points to those who have taken the time to assist you, here's how:

http://forums1.itrc.hp.com/service/forums/bizsupport/helptips.do?#33

Thanks,

Gary

[Piero_2]

Thanks to everyone for the support.