Re: Meeting Minutes for Wednesday, Nov 30, 2005

Here is the link for the Bash programming Howto. It goes into a  
little more depth than Jonathan did last night for those that would  
like to use some of the topics he went over in an actual bash script.

http://www.tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html

Mike.
[email protected]


On Dec 1, 2005, at 12:37 AM, Derek Perriero wrote:

> So, here's what went down this meeting, and you can also find the  
> current and previous minutes at http://morlug.org/meetings/minutes/.
>
> ##
>
> Morlug - Wednesday, November 30, 2005 - Command Line Kung Foo!
>
> Topics::
>
> Bourne Shell
> GNU Runtime Libraries
> History
> Textual Completion (TAB)
> Processing Handling
>
>
> Description::
>
> An attempt to touch on the basics of command in Linux.
>
> Meeting Content::
>
> Jonathon has the floor.  Linux needs a human interaction via  
> commandline.
> A shell surrounds the kernel, the outer most layer.  Std input/ 
> output through  the keyboard.From the Bourne Shell (sh) Bourne  
> again shell was born by Richard Stallman.
> Its easy to start most gui's from the command line.  Emacs is a  
> great editor based on the GNU project.  Now let's practice...
>
> For Emacs:
> ctrl-k (kill) deletes a whole line.
> ctrl-y (yank) restores the line.
> Basically its cut/paste with funny names, best described in the  
> documentation for emacs.
> alt-b moves you backwards through the line.
> alt-f moves you forward through the line.
> alt-backspace delete the last previous word.
>
> On some terminals alt may not work.
>
> For History:
> pressing the up arrow will bring up your most recent command.
> now everyone type "echo $HISTFILE"
> ...~/.bash_history
>
> For Textual Completion:
> pressing TAB will list all items that can be completed from the  
> letters typed in the command line.
> ...$ <TAB> shows all shell environment variables
> ...~ <TAB> shows all items related to current user
>
> More Bash Commands:
> cd . takes you to your current directory
> cd .. takes you to the parent directory
>
> typing help will display all built-in commands into the shell.
>
> typing pwd will display your current directory.
>
> typing echo $PATH will display all bin directories.
> .../usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/ 
> usr/X11R6/bin
>
> type echo * to display all contents of directory
> ...a mimicked command would be ls
> the * is a wildcard to display all items
> ex: echo g* would display all items that begin with "g".
>
> Searching on a range of letters.
>
> typing cd $HOME will bring you back to your home directory which is  
> the same as cd ~
>
> Processs Handling:
>
> User multi-tasking.
>
> ex: type emacs& to send the the process to the background
>
> type fg to see background processes
> type bg to bring it back to the background
>
> type jobs to list processes, then kill %[job #]
>
> type jobs -p to list process id.
>
> type ctrl-c to kill process
>
> type ctrl-\ to kill ultimately
>
> type killall [process name] -kills all child process below it.
>
> Unix I/O:
> file I/O sequence of characters
> ...ex: drives are treated as files.
>
> cat copies input to output
> grep searches input to output
>
> the pipe character can be useful to move data outputted to a  
> program to use.
> ex: ls -la | less will output the contents of the directory to less
>
> tee is used to pipe std output to a file.
>
> label redirection is used to redirect std output to a file
> ex: cat >>file<<.
>     >type here
>     >foobar
>     ctrl-d
>
>
> p.s. Jonathon will be posting his meeting notes on the command  
> line, so check it out for a more in depth look.
>
> -- 
> Perriero, Derek
> [email protected]
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