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Bash script - bad substitution error
So I wanted to do a bash script but whenever I run it I get "bad substitution" error. I have already browsed stackoverflow and tried some solutions (such as making sure #!bin/bash is at the top and to execute using sh command) but none worked 
Any ideas?
#!/bin/bash printf "Hello. This is an OTS setup script provided by Damon at Otland. Please standby as user input may be required." read -r -p "Do you want to install the webpanel? [Y/n]" response response=${response,,} # tolower if [[ $response =~ ^(yes|y| ) ]]; then wget https://raw.githubusercontent.com/NicolasLoew/vps/master/panelsetup.sh sh panelsetup.sh fi printf "If you installed webpanel please navigate to http://yourip:2004/ and follow install instructions." printf "Once you have installed the webpanel login and go to Enduser-->Configuration-->Apache and delete everything in the config and replace it with https://raw.githubusercontent.com/NicolasLoew/vps/master/apacheconfig. This will be needed for Znote later." read -r -p "Do you want to compile latest TFS? [Y/n]" response response=${response,,} # tolower if [[ $response =~ ^(yes|y| ) ]]; then wget https://raw.githubusercontent.com/NicolasLoew/vps/master/tfsauto.sh sh tfsauto.sh fi printf "You have successfully compiled TFS! You can start it by going to cd forgottenserver and execute ./tfs. Dont forget to configure config.lua though. You can create database in webpanel-->enduser." read -r -p "Do you want to install ZnoteAAC? [Y/n]" response response=${response,,} # tolower if [[ $response =~ ^(yes|y| ) ]]; then wget https://raw.githubusercontent.com/NicolasLoew/vps/master/znotesetup.sh sh znotesetup.sh fi printf "You havee successfully setup ZnoteAAC. Navigate to http://yourip and follow the instructions."
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BEEP
LowEndStackOverflow, eh?
Try:
https://paste.lugons.org/show/Y7qoxDQoCvZyDDaXAaJe/
And fix znotesetup.sh as well:
https://paste.lugons.org/show/2EPEozmJ9pgG2TButVKI/
And don't troll over forum, stay in same topic. Just advice.
+1 @Nekki
where's my gun?
How big of a hole do you want to make
10cm atleast
Damn feds say its a destructive device if bore size is over 1/2" / 1.27cm