[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] ! (bang), in history substitution command "" (double quotes), enclosing directory names that contain spaces #, prefacing comment lines in Apache $ (dollar sign), end-of-line pattern indicator < > (angle brackets) > (redirection) operator >> (append) operator << for here documents * filename wildcard . (dot) .. (referring to parent directory) .. and /, moving up multiple levels with copying file to current directory file names beginning with 2nd .app files .Mac membership Backup application with cost of free music in iDisk .psync.db file .tcshrc file / (slash) combining with .. to move multiple directory levels delimiting subdirectories root directory moving to permissions for sendmail /etc directory /etc/hostconfig file Apache web server enabled MAILSERVER line /etc/httpd/dav/ directory users, creating write permission for server /etc/httpd/httpd.conf file ACGI Dispatcher, adding configuring WebDAV editing Apache configuration /etc/httpd/users/ files /etc/inetd.conf file /etc/init.d directory, lacking in Mac OS X /etc/mail/access file /etc/mail/config.mc file DontBlameSendmail configuration parameter editing to use specific domain name LUSER_RELAY sending all mail through ISP mail server /etc/mail/local-host-names file /etc/mail/sendmail.cf file /etc/mail/update file /etc/modules file adding airport to installing new Linux kernel /etc/network/interfaces, configuring for wireless /etc/passwd and etc/group files /private/etc/crontab system crontab file /Library/Webserver/CGI-Executables/ 2nd /Library/Webserver/Documents/ /private/etc/crontab /Users/Shared/PostgreSQL/data/pg_hba.conf file /usr/local/src directory (Apache and mod_perl sources) : (colon), in the prompt 2nd \ (backslash) delimiting Windows subdirectories Unix, special properties of \r (carriage return) ^ (caret) ^M linebreak for Macintosh beginning-of-line pattern indicator ^M linebreak for Macintosh | (pipe) character counting files, use in ~ , referring to home directory ~, referring to home directory 802.11b networks |