No command 'update' found, did you mean:
 Command 'xupdate' from package 'libxml-xupdate-libxml-perl' (universe)
 Command 'uupdate' from package 'devscripts' (main)
 Command 'lupdate' from package 'qt4-linguist-tools' (main)
 Command 'lupdate' from package 'qt3-dev-tools' (main)
update: command not found