How to append a variable to CURL command

Question

I am trying to use curl qrenco.de/google.com with an alias so that the alias takes the input parameter google.com and appends it to curl qrenco.de/. i want it to look something like this:
$qrcode google.com

i have tried the following:
alias qrcode='curl qrenco.de/$(read)'

but this doesn't seem to work. i am new to bash and would like to know the right approach.

Isn't it what you need locally to your Linux system, rather than one more occasion to give-up your data to GAFAMs for a mundane feature? See: qrencode man-page: linux.die.net/man/1/qrencode — Léa Gris
– Léa Gris, Commented Jul 19, 2021 at 6:03

Paul Hodges · Accepted Answer · 2021-07-19 13:37:09Z

1

Almost every time an alias gives you trouble, you should just be using a function.

qrcode() { curl qrenco.de/"$1"; }

answered Jul 19, 2021 at 13:37

Paul Hodges

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3 Comments

Manoj Over a year ago

thank you. i have found a work around using a similar command alias qrcode='f(){ curl qrenco.de/"$@"; unset -f f; }; f' but could not understand this. can you help me with this?

Manoj Over a year ago

what does unset -f f; mean?

Paul Hodges Over a year ago

unset removes something like a variable from the env. -f says the thing is a function. In this example, the name of the function is f. What that does is uses an alias to create a function every time that un-creates itself when it runs - then call the function. Seems silly to me. Just drop the alias and make a function instead. Why use both to create exactly the same function over and over?

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