awk -F works on Linux, but not on Solaris

Hello,

I found this command works on Linux:

$ echo `uptime` | awk -F "load average: " '{ print $2 }'
1.60, 1.53, 1.46

but got error on Solaris:

$ echo `uptime` | awk -F "load average: " '{ print $2 }'
awk: syntax error near line 1
awk: bailing out near line 1

$ which awk
/usr/bin/awk

$ uname -a
SunOS 5.10 Generic_127127-11 sun4us sparc FJSV,GPUZC-M
 
$ uptime
  1:33pm  up 6 day(s), 14:27,  3 users,  load average: 0.36, 0.48, 1.90

How do I use the awk -F on Solaris?

Thanks!

use /usr/bin/nawk or /usr/xpg4/bin/awk on Solaris

Thanks, they worked!