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Linux overview. Architecture Kernel File system Shell: Korn, Bourne, C, Bash X Windows: Motif, Open Look, X.OrgX.Org Desktop: Gnome, KDE,etc.

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Presentation on theme: "Linux overview. Architecture Kernel File system Shell: Korn, Bourne, C, Bash X Windows: Motif, Open Look, X.OrgX.Org Desktop: Gnome, KDE,etc."— Presentation transcript:

1 Linux overview

2 Architecture Kernel File system Shell: Korn, Bourne, C, Bash X Windows: Motif, Open Look, X.OrgX.Org Desktop: Gnome, KDE,etc

3 Characteristics multiuser multitask, multithread concurrency built-in networking (NFS) 32/64 - bit OS UNIX like Intel, Mac, Mainframes

4 Graphical user interface Visual tour of the GNOME Desktop Desktop System Settings Search local Software Center File Manager Text Editor Terminal

5 Some applications Internet Firefox Thunderbird gFTP Libre Office Word processor Spreadsheet Presentation Tools Screen capture PDF viewer Graphical editor Calendar/organizer

6 Linux at the shell prompt You need to open a terminal System prompts Korn, Bash and Bourne Shells: $ C Shell: % (root #) Linux: uses the bash shell Commands login, logout news, passwd, who, finger, talk man (basic help) to interrupt Ctrl-C cat, more

7 Files and directories  File concepts filenames: up to 14 digits, one word including _ and. e.g.: test_program and sales.report.1 case sensitive bold is not BOLD types: ordinary, directories, special devices and links pathnames: /home/abento/select.html t common names: usr, users, bin, etc t full and relative  Basic file commands in Linux How to obtain a directory listing: ls and ls -al How to create, remove, change to, and present working directory: mkdir, rmdir, cd, pwd. How to copy, move, delete, type: cp, mv, rm -i, cat

8 Reading a directory output permis links Owner Group size date time filename -rwxr-xr-x 1 abento faculty 95 Aug 2 14:13 UBmail* -rw------- 1 abento faculty 4294 Mar 2 1995 Wp60 lrwxr-xr-x 1 root sys 42 Aug 3 09:11 SoftWindows -rwx------ 1 abento faculty 32802 Oct 16 17:56 Xdefaults.swin* drwx--x--x 3 abento faculty 512 Aug 21 12:20 ais.dir/ drwxr-xr-x 2 abento faculty 512 Aug 3 09:11 axhome/ drwxr-xr-x 3 abento faculty 512 Sep 18 14:54 dumpster/ -rwx--x--x 1 abento faculty 1179748 Aug 23 14:00 hcl95.hlp* -rw------- 1 abento faculty 312652 Jun 21 16:05 lviewp1b.zip drwx------ 2 abento faculty 512 Aug 3 09:11 mail/ -rw------- 1 abento faculty 957 Jun 16 17:00 osref.books drwxr--r-- 8 abento faculty 512 Aug 3 09:11 pub/ drwx------ 9 abento faculty 512 Aug 3 09:11 root/ -rw------- 1 abento faculty 2162 Oct 18 17:09 select.html File type: - ordinary, d directory, l symbolic link, b block, c special character, p piped. Permissions: r read, w write, x execute (O, G,W) an example


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