Linux commands

1. To know the version and bit type of the Ubuntu installation:

a) file /sbin/init
 
b) cat /proc/version
 
c) uname -m

2. Load/Eject CDROM in Ubuntu from Terminal:

To eject: eject cdrom
To insert: eject -t cdrom 

3. For instance, to search for all the files with foo in it on the whole filesystem, then use:

find / -name '*foo*'

4. From Ubuntu17.04 gedit/update-manager and others will not launch under 'root'. If you want supply this command first:
xhost local:root





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