CODEWITHSUNDEEP
bashconfigcat
funguy
funguy

Reputation: 2160

How to add multiple lines to the end of file using bash?

I would like to add this code to the end of a file:

DAEMON_OPTS="-a :80 \
            -T localhost:6082 \
            -f /etc/varnish/default.vcl \
            -S /etc/varnish/secret \
            -s malloc,256m"

How can I do this while keeping the structure and slashes?

I tried using echo line by line as well as this without success:

  cat > /etc/default/varnish  <<- EOM
  DAEMON_OPTS="-a :80 \
            -T localhost:6082 \
            -f /etc/varnish/default.vcl \
            -S /etc/varnish/secret \
            -s malloc,256m"
  EOM

Upvotes: 1

Views: 306

Answers (1)

anubhava
anubhava

Reputation: 785058

Use quotes around here-doc identifier to avoid shell expansion:

cat >> /etc/default/varnish <<-'EOM'
DAEMON_OPTS="-a :80 \                                                                                                                                   -T localhost:6082 \
            -f /etc/varnish/default.vcl \
            -S /etc/varnish/secret \
            -s malloc,256m"
EOM

As per man bash:

If any characters in word are quoted, the delimiter is the result of quote removal on word, and the lines in the here-document are not expanded.

Upvotes: 2

Related Questions