Land #17789, proftpd_modcopy_exec merge conflict

documentation/modules/exploit/unix/ftp/proftpd_modcopy_exec.md

@@ -13,6 +13,7 @@ directory, PHP remote code execution is made possible.
 Download and build:
 
 ```sh
+sudo apt install gcc make
 wget ftp://ftp.proftpd.org/distrib/source/proftpd-1.3.5.tar.gz
 tar zxvf proftpd-1.3.5.tar.gz
 cd proftpd-1.3.5
@@ -20,10 +21,10 @@ cd proftpd-1.3.5
 make
 ```
 
-Run ProFTPD in foreground with `-n` flag for testing:
+Run ProFTPD using the sample default configuration file (in foreground with `-n` flag for testing):
 
 ```
-sudo ./proftpd -n
+sudo ./proftpd -n -c "`pwd`/sample-configurations/basic.conf"
 ```
 
 Set up a web server with a world-writable directory: