How to use curl in a shell script? [duplicate]

Question

I'm trying to run this shell script in order to install RVM in an Ubuntu box

#!/bin/bash
RVMHTTP="https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer"
CURLARGS="-f -s -S -k"

bash < <(curl $CURLARGS $RVMHTTP)

but I get the following error

Syntax error: Redirection unexpected

Also tested not using the variables, but same result, could you tell what I'm missing?

Your question has been already answered here: stackoverflow.com/questions/5735666/… — favoretti
– favoretti, Commented Nov 29, 2011 at 22:33
I tried it on my mac and it worked fine. I guess it's Ubuntu's bash (which I believe is dash). You might want to check the man page for dash. — jaypal singh
– jaypal singh, Commented Nov 29, 2011 at 22:37
If you get "redirection unexpected" it probably means you were using sh instead of bash, in spite of the shebang line. — tripleee
– tripleee, Commented Mar 23, 2021 at 7:55

Community · Accepted Answer · 2017-05-23 10:30:49Z

26

#!/bin/bash                                                                                                                                                                                     
CURL='/usr/bin/curl'
RVMHTTP="https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer"
CURLARGS="-f -s -S -k"

# you can store the result in a variable
raw="$($CURL $CURLARGS $RVMHTTP)"

# or you can redirect it into a file:
$CURL $CURLARGS $RVMHTTP > /tmp/rvm-installer

or:

Execute bash script from URL

edited May 23, 2017 at 10:30

CommunityBot

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answered Nov 29, 2011 at 22:34

Tilo

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Comments

Andrew Barber · Accepted Answer · 2013-09-26 14:39:02Z

6

url=”http://shahkrunalm.wordpress.com“
content=”$(curl -sLI “$url” | grep HTTP/1.1 | tail -1 | awk {‘print $2′})”
if [ ! -z $content ] && [ $content -eq 200 ]
then
echo “valid url”
else
echo “invalid url”
fi

edited Sep 26, 2013 at 14:39

Andrew Barber

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answered Sep 26, 2013 at 12:57

Krunal Shah

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Comments

ДМИТРИЙ МАЛИКОВ · Accepted Answer · 2011-11-29 22:44:08Z

4

Firstly, your example is looking quite correct and works well on my machine. You may go another way.

curl $CURLARGS $RVMHTTP > ./install.sh

All output now storing in ./install.sh file, which you can edit and execute.

edited Nov 29, 2011 at 22:44

answered Nov 29, 2011 at 22:36

ДМИТРИЙ МАЛИКОВ

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