Making your own commands!

[viking60]

Jupp! Adding only this line is definitely easier:

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alias ifconfig='/sbin/ifconfig'

The Guru has spoken.

Still I will leave the above because it demonstrates how to combine several aliases into one alias.

[rolf]

Sure, I like your multi-command alias tip.

[viking60]

Every time I add an alias I have to restart bash or log out and back in.
to restart bash i have to remember this command:

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source ~/.bashrc

Which i don't so i made an alias out of it:

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alias restartbash='source ~/.bashrc'

So to make it work you only need to do a:

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source ~/.bashrc

But that would be for the last time After that you can simply write

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restartbash

[viking60]

Sometimes you need to alias complex commands with quotes since I use the single quite ( ' ) for my aliases I need to replace the inner quotes with a double one ( " ).
Example:

This command will show the last 20 programs installed in Arch ( you need to install expac):

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expac --timefmt='%d-%m-%Y %T' '%l\t%n' | sort | tail -20

As you can see the time format is in quotes so when I make an alias of it like this:

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alias lastinstalled='expac --timefmt='%d-%m-%Y %T' '%l\t%n' | sort | tail -20'

It won't work

But when I replace those inner quotes with " like this:

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alias lastinstalled='expac --timefmt="%d-%m-%Y %T" "%l\t%n" | sort | tail -20'

It works just fine:

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30-06-2015 12:16:09   perl-json-xs
30-06-2015 12:16:10   perl-net-ssleay
30-06-2015 12:16:10   perl-xml-libxml
30-06-2015 12:16:11   perl-xml-parser
30-06-2015 12:16:12   pidgin
30-06-2015 12:16:15   postgresql-libs
30-06-2015 12:16:15   python2-systemd
30-06-2015 12:16:15   rrdtool
30-06-2015 12:16:15   rxvt-unicode
30-06-2015 12:16:15   rxvt-unicode-terminfo
30-06-2015 12:16:15   screen
30-06-2015 12:16:15   systemd-sysvcompat
30-06-2015 12:16:15   virtualbox-host-modules-lts
30-06-2015 13:25:42   ruby-net-ssh
30-06-2015 13:25:58   ruby-net-ssh-gateway
30-06-2015 14:52:49   lsb-release
30-06-2015 16:13:25   expac
31-05-2014 19:40:38   inputproto
31-05-2014 19:41:00   xvidcore
31-10-2014 15:08:54   libpipeline


If you are using exotic foreign dates you may want to change the code to:

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alias lastinstalled='expac --timefmt="%Y-%m-%d %T" "%l\t%n" | sort | tail -20'