Confused with ' ' , " " ... used in commands


 
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Operating Systems AIX Confused with ' ' , " " ... used in commands
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Old 02-01-2017
Confused with ' ' , " " ... used in commands

What happens to the shell when we include ' ' or "" in our commands ..And what happens if we use only the commands without single or double quotes.
I don't know the use of these things.
Can you please help me with simple example please ? using ls or grep
Thanks a lot
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yum(8)																	    yum(8)

NAME
yum - Yellowdog Updater Modified shell SYNOPSIS
yum shell [filename] DESCRIPTION
yum includes an interactive shell for conducting multiple commands or sets of commands during a single execution of yum. These commands can be issued manually or passed to yum from a file. The commands are much the same as the normal yum command line options. See here yum(8) for that information. There are a few additional commands documented below. config [argument] [value] args: debuglevel, errorlevel, obsoletes, gpgcheck, assumeyes, exclude If no value is given it prints the current value. If value is given it sets that value. repo [argument] [option] list: lists repositories and their status enable: enable repositories. option = repository id disable: disable repositories. option = repository id transaction [argument] list: lists the contents of the transaction reset: reset (zero-out) the transaction solve: run the dependency solver on the transaction run: run the transaction Examples The following are examples of using the yum shell. list available packagename* groupinfo 'Some Group' install foo remove bar update baz run That will list available packages matching the glob 'packagename*'. It will return information on the group 'Some Group' It will then queue the following commands into the transaction: install foo, remove bar, update baz. Then the 'run' command will resolve dependencies for the transaction commands and run the transaction. SEE ALSO
yum (8) http://yum.baseurl.org/ AUTHORS
See the Authors file included with this program. BUGS
There of course aren't any bugs, but if you find any, they should be sent to the mailing list: yum@lists.baseurl.org or filed in bugzilla. Seth Vidal yum(8)