apt-get install "unable to locate package"

command
" apt-get install update"

/output/

"reading package lists... Done
building dependency tree
reading state information. .. Done
E:Unable to locate package update"

and
" apt-get install Im-sensors"

"reading package lists... Done
building dependency tree
reading state information. .. Done
E:Unable to locate package Im-sensors"
 
the correct command for updating the package list is
Code:
apt-get update
please try again with this command instead of
Code:
apt-get install update
 
the correct command for updating the package list is
Code:
apt-get update
please try again with this command instead of
Code:
apt-get install update

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