Linux+ Fundamentals and Certification

It is also possible to find out what a command is without needing to go onto the internet.

In the example of remove, instead of going to google and searching "linux remove file" you could go to the command line and type apropos remove which would output:

queue (3) - implementations of lists, tail queues, and circular qu...
colrm (1) - remove columns from a file
cut (1) - remove sections from each line of files
DebianNet (3pm) - create, remove, enable or disable entry in /etc/inetd....
delgroup (8) - remove a user or group from the system
deluser (8) - remove a user or group from the system
envz_remove (3) - environment string support
flock (2) - apply or remove an advisory lock on an open file
inotify_rm_watch (2) - remove an existing watch from an inotify instance
insque (3) - insert/remove an item from a queue
ipcrm (1) - remove a message queue, semaphore set or shared memory id
lockf (3) - apply, test or remove a POSIX lock on an open file
lvremove (8) - remove a logical volume
modprobe (8) - program to add and remove modules from the Linux Kernel
mq_unlink (2) - remove a message queue
mq_unlink (3) - remove a message queue
mrd (1) - remove an MSDOS subdirectory
psfstriptable (1) - remove the embedded Unicode character table from a con...
pvremove (8) - remove a physical volume
pyclean (1) - removes .pyc and .pyo files
remove (3) - remove a file or directory
remove-default-ispell (8) - remove default ispell dictionary
remove-default-wordlist (8) - remove default wordlist
remove-shell (8) - remove shells from the list of valid login shells
remque (3) - insert/remove an item from a queue
rm (1) - remove files or directories
rmdir (1) - remove empty directories
rmmod (8) - simple program to remove a module from the Linux Kernel
sem_unlink (3) - remove a named semaphore
unlink (1) - call the unlink function to remove the specified file
unlinkat (2) - remove a directory entry relative to a directory file ...
update-inetd (8) - create, remove, enable or disable entry in /etc/inetd....
update-rc.d (8) - install and remove System-V style init script links
vgremove (8) - remove a volume group

You can then go down the list on the right and see which is most appropriate.

I have found this useful when for some reason I have not been able to get a net connection.

Dan