Great description and examples of Linux commands

Found a great description of some Linux commands at http://www.linfo.org/command_index.html which I definitely recommend for newbies. Some of my favourits:

mike@jarvis:/media/sdb1/www$ find . -type d -exec sudo chmod 0775 {} \;
mike@jarvis:/media/sdb1/www$ find . -type f -exec sudo chmod 0664 {} \;

mike@mikembp:~$ tail -f /var/log/apache2/error_log
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/extensions/no-debug-non-zts-20090626/imagick.so' - dlopen(/usr/lib/php/extensions/no-debug-non-zts-20090626/imagick.so, 9): Library not loaded: /opt/local/lib/libpng15.15.dylib\n  Referenced from: /usr/lib/php/extensions/no-debug-non-zts-20090626/imagick.so\n  Reason: image not found in Unknown on line 0
[Fri Feb 21 05:03:12 2014] [notice] Digest: generating secret for digest authentication ...
[Fri Feb 21 05:03:12 2014] [notice] Digest: done
[Fri Feb 21 05:03:12 2014] [info] Init: Seeding PRNG with 144 bytes of entropy
[Fri Feb 21 05:03:12 2014] [info] Init: Generating temporary RSA private keys (512/1024 bits)
[Fri Feb 21 05:03:13 2014] [info] Init: Generating temporary DH parameters (512/1024 bits)
[Fri Feb 21 05:03:13 2014] [info] Init: Initializing (virtual) servers for SSL
[Fri Feb 21 05:03:13 2014] [info] mod_ssl/2.2.24 compiled against Server: Apache/2.2.24, Library: OpenSSL/0.9.8y
[Fri Feb 21 05:03:13 2014] [notice] Apache/2.2.24 (Unix) DAV/2 PHP/5.3.26 mod_ssl/2.2.24 OpenSSL/0.9.8y configured -- resuming normal operations
[Fri Feb 21 05:03:13 2014] [info] Server built: Jul  7 2013 18:05:17

mike@mikembp:~$ id
uid=501(mike) gid=20(staff) groups=20(staff),401(com.apple.access_screensharing),503(access_bpf),0(wheel),12(everyone),33(_appstore),61(localaccounts),79(_appserverusr),80(admin),81(_appserveradm),98(_lpadmin),100(_lpoperator),204(_developer)

mike@mikembp:~$ du -sh /Users/mike/Movies/movie/
 29G    /Users/mike/Movies/movie/

mike@mikembp:~$ ps -ef |grep -i little
    0   112     1   0  5:03AM ??         0:20.64 /Library/Little Snitch/Little Snitch Daemon.bundle/Contents/MacOS/Little Snitch Daemon
  501   675   662   0  5:03AM ??         2:22.88 /Library/Little Snitch/Little Snitch Agent.app/Contents/MacOS/Little Snitch Agent
  501   686   662   0  5:03AM ??         0:54.07 /Library/Little Snitch/Little Snitch Network Monitor.app/Contents/MacOS/Little Snitch Network Monitor -psn_0_49164
  501 17552   782   0  7:59AM ttys004    0:00.00 grep --colour=auto --exclude-dir=.svn -i little

mike@mikembp:~/Sites$ sudo chown -R mike:_www *

mike@mikembp:~$ rsync -zva --progress Dropbox/bookmarks-firefox.json mike@jarvis:.
building file list ...
1 file to consider
bookmarks-firefox.json
      156268 100%   14.72MB/s    0:00:00 (xfer#1, to-check=0/1)

sent 36818 bytes  received 42 bytes  4336.47 bytes/sec
total size is 156268  speedup is 4.24