os : centos 5.5
kernel : 2.6.18-194.3.1
arch : x86_64


I'm trying to install glusterfs with rpms.
I downloaded rpms from 
http://download.gluster.com/pub/gluster/glusterfs/3.2/LATEST/CentOS/5.7/
(I only can find centos version 5.7 and 6.0 I could not find 5.5 in that site)

and I try to install "glusterfs-fuse-3.2.5-1.x86_64.rpm"

and copy it to my local repository, and run "createrepo"

after that I install glusterfs-core with "yum".

during the installation, 
the error message shows,


===========================================================================
Installing     : glusterfs-core               

/var/tmp/rpm-tmp.6336: line 25: sleep: command not found
error: %post(glusterfs-core-3.2.5-1.x86_64) scriptlet failed, exit status 127

===========================================================================

what is the problem? 

if you need more information, please let me know.