Creating nginx configuration files with script and variable expansion

Question

I'm trying to create a nginx configuration file using a here-document with variable expansion. I use:

cat <<EOF > /etc/nginx/nginx.conf
settings
EOF

It works and expands the variables I need, but there are variables that need to be printed literally, so it's breaking my configuration file.

Example of lines I need to print literally:

limit_req_zone $binary_remote_addr zone=one:30m rate=20r/s;
try_files $uri =404;

How do I fix this issue?

Freddy · Accepted Answer · 2019-12-01 08:03:50Z

3

Escape the $ with a \ of those variables you don't want to replace:

cat <<EOF > /etc/nginx/nginx.conf
limit_req_zone \$binary_remote_addr zone=one:30m rate=20r/s;
try_files \$uri =404;
EOF

answered Dec 1, 2019 at 8:03

Freddy

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