silent and non-interactive installation of a package in Solaris using pkgadd and admin file

The command am giving is: pkgadd -a admin file -d absolutepathofpackage Then, its showing the below error > The following packages are available: > 1 Packagename BigFix Agent > (sparc) 9.2.8.74 > > Select package(s) you wish to process (or 'all' to process > all packages). (default: all) [?,??,q]: all How to get this step included during silent installation?