We all know that sharepoint central administration is the great UI which allows us to to all administration operation for the sharepoint.
but there is something more powerful command line tool in sharepoint known as STSADM.
here is the link to all stsadm commands : all stsadm commands
there is some thing called customizationof these commands.
gl-tool is the great tool which is customized stsadm commands and allows you more power.
visit this link to know more