The chown command change file owner and group. The chmod command change file mode (bits) i.e. permission. A wrong permission can create problems on Linux or Unix-like system. It is clearly illustrated in this comic.
The author is the creator of nixCraft and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.