Linux is a fully-fledged Unix multi-user system. This means that the filesystem supports multiple users, and all files must belong to someone. There is a special user, called root, who can do system stuff like override file protection and start daemons. Don't login as this unless you have to. Use the adduser command to make yourself a working account, unless you're installing system software.
A lot of system configuration is stored in the directory /etc. System startup commands in Linux are stored in /etc/rc.d. Custom configurations files for each user are stored in the users default directory with a dot prefix eg. .tcshrc . These files do not appear in an ls listing unless the -a option is used.
Unix DOS VMS Function ------------------------------------------------------------- ls -la DIR DIR/SIZE/DATE/PROT full directory ls DIR short directory rm DEL DELETE rm -i DELETE/CONFIRM mkdir MKDIR CREATE/DIR make directory . [] current directory .. [-] parent directory /cd/usr/doc E:\USR\DOC DUA1:[USR.DOC] typical path man HELP HELP Manual pages apropos HELP HINTS relevant topics grep SEARCH search more TYPE/PAGE less LIST edit/readonly zless browse gzipped doc zgrep search gzipped doc tar BACKUP (tar) Tape(file) Archive cp COPY COPY mv REN RENAME ~/ SYS$LOGIN: login directory alias :== define symbol setenv x DEFINE define logical x setenv SHOW LOGICAL show logicals elm mail mail utility tin vnews newsreader lpr PRINT PRINT print exit LOGOUT log out passwd SET PASSWORD set password Mosaic MOSAIC
Remember, Unix is case-sensitive.