Comments on Command line aliases in the Linux Shell

 Thanks! I enjoyed reading these articles.

 If these comments need to be manually approved, why is the captcha necessary (I especially hate recaptcha's ones).

Without a captcha, spam bots would post thousands of messages a day. And without manual approval, your site get's listed as useful target on the "marketing" lists of SEO agencies and their "human bots" start to fill the comments with spam.

Good article - thanks.

Another tip if you make an alias for a system command - e.g. alias ping='ping c3' - because you use ping so often you do not want pings to be infinite.

Then If you want the system ping (infinite) back for a one time situation you can escape your ping with a backspace - $ \ping - and you will be using the system ping and not your alias ;-)

I have the following alias I use quite a lot:alias e='env | grep -Ei'

This is useful to quickly find a shell variable without writing it out. E.g. compare:

echo $JAVA_HOME

with

e java

It is also useful if you know part of the value, but don't remember the name of the variable. E.g. you know there is a proxy setup in the shell, but don't remember the variable names. Just write:

e prox

http_proxy=http://proxyhost.acme.org:8080

ftp_proxy=http://proxyhost.acme.org:8080

https_proxy=http://proxyhost.acme.org:8080

no_proxy=localhost,127.0.0.1

----Final comment: Why use aliases? Bash functions are way more useful.