Question

I have the below command that fails when I run it through a bash script but If I copy each echoed statement and paste them in a terminal it works…

networksetup -listallntworkservices | while read line; do networksetup -setautoproxy '"'$line'"' http://etc...

I ideally only want to run the above command for network services that have “Ethernet” or “Wi-fi” in the name.

Answer 1

As I don’t know what are the input of your command :
Try change '"'$line'"' by "$line" or "'$line'".

To avoid shell expansion in the case variable contains spaces always double quote variables when passing an argument to a command.

If double quotes are needed inside variable, this should work: "\"$line\""

To filter lines matching Ethernet or Wi-fi

networksetup -listallntworkservices |
  while read line; do
    if [[ $line =~ (Ethernet|Wi-fi) ]]; then
      networksetup -setautoproxy "$line" http://etc.
    fi
  done