Spooling

Spooling: Storing something temporarily in a buffer is called spooling

when we spool a package we can add the package directly with out OS cd

SPOOL: simultaneous peripheral operational online.

1. to spool a package:

  # pkgadd -d /cdrom/cdrom0/s0/Solaris_10/Product -s spool SUNWzsh

2. all the spooled packages are stored under

   /var/spool/pkg

# cd /var/spool/pkg

# ls

SUNWsh

# pwd

 /var/spool/pkg

# cd

# eject cdrom

now delete zsh:

1. remove zsh

# pkgrm SUNWzsh

2. to get back the package from spool

# pkgadd SUNWzsh

Note: 

while adding a package the '-d' option is used, to add a package from removal devices

there is no need of '-d' option to add a package from spool.