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2007-12-31

vim cheat sheet (update)

vim cheat sheet ( revised )
:help

:help .*open\&.*window ---

:help HelpForItem



vim , press Esc, press w to save the file ,q to quit

Working with files

:bn -- switch to the next file buffer

:bp -- switch to the previous file buffer

:ls -- list the opened file buffers

:buffer 17 --- go to the file with number 17 listed in the previous command

gf -- open the file under the cursor in Normal mode

:bd --- close the current file buffer

:e /var/tmp.txt open new buffer (and window ) with the /var/tmp.txt file

:new /path/to/the/file/to/open in

set winheight=90 (also could be added to /etc/vimrc

vim *.pl --- open all Perl scripts in the current directory

:cnext :bn -- go to the next buffer

:ls list all the buffers

:bn 3 -- go the nubmer of the buffer listed from the previous command

to Quit VIM :q

to delete the line in the executable mode – dd

:split /usr/share/some.file --- opens a new file in a new window

:e /usr/share --- opens a directory (in a new buffer , no windows to mess around )

:w filename Save changes to a file. If you don't specify a file name, Vim saves as the file name you were editing. For saving the file under a different name, specify the file name.

:wq Write the file and exit.

:q! exit without saving (the hyphen meaning is the same for all commands )



Navigating

/itemToSearchInTheText --- works without the colon also

j , k , l ,h

gg --- go the begining of the document

G -- go the end of the document

Home End Ctrl + Home Ctrl + End , Ctrl + vasen nuoli Ctrl + oikea nuoli Ctrl + G

495G --- go to row number 495

'' ---- (Press ' twice ) jump back to line (where you came from)

Ctrl + O --- Ctrl + I --- e - 0 To the beginning of a line.
$ To the end of a line.
b To the beginning of a word.
:/tokenToSearch n - N -
:?tokenToSearch n - Ctrl + o - Ctrl + i - N -

[](){} %

Deleting
dd or :d Delete the current line.
Copy Paste
y (V) Yank the highlighted text. In Winblows terms, "copy the selected text to clipboard."
d (V) Delete the highlighted text. In Winblows terms, "cut the selected text to clipboard."
yy or :y or Y Yank the current line. You don't need to highlight it first.
u Undo the last action
Ctrl + r Redo

Find and replace
:%s/foo/bar/g Replace every occurrence of the word foo with bar in the whole file.

:%s/^.*clear$\n//gi --- remove all the lines containing the string "clear"

Find/Replace:
Example:
:%s/fff/rrrrr/g - For all lines in a file, find string "fff" and replace with string "rrrrr" for each instance on a line.
:%s/fff/rrrrr/gc - For all lines in a file, find string "fff" and replace with string "rrrrr" for each instance on a line. Ask for confirmation
:'a,'bs/fff/rrrrr/gi - For all lines between line marked "a" (ma) and line marked "b" (mb), find string "fff" and replace with string "rrrrr" for each instance on a line. Case insensitive.
:%s/*$/ - For all lines in a file, delete blank spaces at end of line.
:%s/\(.*\):\(.*\)/\2:\1/g - For all lines in a file, move last field delimited by ":" to the first field. Swap fields if only two.
For more info type:
:help substitute
:help pattern
:help gdefault
:help cmdline-ranges



where vim sets the settings of the "sessions"

vim /root/.viminfo

vim /home/sysadmin/.viminfo

vim /home/nortel/.viminfo

How to edit the colors of the current color scheme:

1. Check the name of your current color scheme located at: /root/.vimrc or /home/usrname/.vimrc (attention come kind of aliasing ... )

set colorsheme=dark

2. Edit the current colorsheme

/usr/share/vim/vim63/colors/darkblue.vim

/comments

3. Pick a HEX number for the color of the comments you would prefer to have .. #40FF00 (google color table )

Ctrl-R Ctrl-F Enters the file under the cursor into the editor in you commend line (command mode).

Ctrl-R Ctrl-A Enters the text from the editor in you commend line (command mode).

Mappings

the keyboard shortcuts performing user defined commands which could be saved at the /etc/vimrc

map :bn! ---- Ctrl + Tab for switching to the next buffer

map :bn! :bd # --- Ctrl + F4 - for closing the current buffer

As most other *nix applications, you can also pause Vim with Ctrl-z, which will drop you back to the shell. When you're finished, you can resume Vim with fg. (This is a feature of the shell, not a Vim feature.)



Any UNIX command can be executed from the vi command line by typing an "!" before the UNIX command.
Examples:
":!pwd" - shows your current working directory.
":r !date" - reads the results from the date command into a new line following the cursor.

http://www.yolinux.com/TUTORIALS/LinuxTutorialAdvanced_vi.html

2007-12-21

Revolutionary news

Yep,

imagine the world without oil driven cars,
without out of juice cell phone battery,
without the dirt coming out of the pipes burning carbon based fuels ...

it is coming soon:

http://news-service.stanford.edu/news/2008/january9/nanowire-010908.html
URL
URL
URL

2007-12-18

multiple redirect in frames with javascript













Type the word to search:










 
URL
URL
URL
URL

2007-12-13

sun solaris cheat sheet

echo find a file containing the "*s*" pattern in its name and display it please
find . -name '*s' -print

SOURCES:
http://docs.sun.com/app/docs/doc/806-7612/6jgfmsvps?a=view
URL
URL
URL

perl regex cheat sheet

sed 's/scarlet/red/g;s/ruby/red/g;s/puce/red/g' # most seds

==================================================nix file glob pattern START
So to match all files except "." and ".." safely you have to use
3 patterns (if you don't have filenames like ".a" you can leave
out the first):

.[!.]* .??* *

===============================================nix file glob END
(https|http|ftp|news)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*
==========================================http links END
[^a-zA-Z] -- anything else but a letter
[^0-9] --- anything else but a digit
==========================================digits , letters


Operators
m// 'Match' operator
s/// 'Substitute' operator
tr/// 'Translate' operator

# Special Characters
. Any single character escept newline n
b Between word and non-word chars, ie: /bcat/b/ matches "cat" but not "scat"
B NOT between word and non-word chars
w Word character
W Non-word character
d Digit
D Non-digit
s White-space
S Non-white-space

# Assertions (Position Definers)
^ Start of the string
$ End of the string

# Quantifiers (Numbers Of Characters)
n* Zero or more of 'n'
n+ One or more of 'n'
n? A possible 'n'

n{2} Exactly 2 of 'n'
n{2, } At least 2 (or more) of 'n'
n{2,4} From 2 to 4 of 'n'

# Groupings
() Parenthesis to group expressions
(n/sitebuilder/regex/images/1/a) Either 'n' or 'a'
Character Classes
[1-6] A number between 1 and 6
[c-h] A lower case character between c and h
[D-M] An upper case character between D and M
[^a-z] Absence of lower case character between a and z
[_a-zA-Z] An underscore or any letter of the alphabet


$mystring =~ s/^s*(.*?)s*$/$1/; Trim leading and trailing whitespace from $mystring
$mystring =~ tr/A-Z/a-z/; Convert $mystring to all lower case
$mystring =~ tr/a-z/A-Z/; Convert $mystring to all upper case
tr/a-zA-Z//s; Compress character runs, eg: bookkeeper -> bokeper
tr/a-zA-Z/ /cs; Convert non-alpha characters to a single space

# print first 10 lines of file (emulates behavior of "head")
sed 10q
# delete the first 10 lines of a file
sed '1,10d'
# delete ALL blank lines from a file (same as "grep '.' ")
sed '/^$/d' # method 1
sed '/./!d' # method 2
# remove most HTML tags (accommodates multiple-line tags)
sed -e :a -e 's/<[^>]*>//g;/ sed 's/foo/bar/g' filename # standard replace command

2007-12-11

imeem mp3 streeming test




Well let's listen ...

2007-12-10

Recursive find and replace

use strict;
use warnings;
use Cwd;

use File::Find;

my $search_pattern='search_pattern' ;
my $replace_pattern = 'replace_pattern';

# my $replace_pattern = 'pla';
my $file_pattern ='.*?html';
find(\&d, cwd);

sub d {
my $file = $File::Find::name;
$file =~ s,/,\\,g;

return unless -f $file;
return unless $file =~ /$file_pattern/;
use Tie::File ;

tie my @file_array , 'Tie::File', $file , memory => 100_000_000 or die "I cannot find the $file" ;
foreach my $line (@file_array) #foreach line of the file
{
$line =~ s/$search_pattern/$replace_pattern/igo ;
}
print $file . " done !!! \n" ;
untie @file_array ;

}

#sources copy pasted fro

ENCODE DECODE TO UTF-8 OR WHATEVER

package EncodDecod ;
# Purpose: this script converts the encoding of bunch of file recursively

use Encode;
use Win32 ;
use strict ;
use warnings ;
use Cwd;
use File::Find;

my $file_pattern ='.*?html'; #in what kind of files are we interedsted
sub main
{
find(\&d, cwd);
}

sub d {
my $file = $File::Find::name;
$file =~ s,/,\\,g;

return unless -f $file;
return unless $file =~ /$file_pattern/;

local( $/, *FILE ) ;
open (FILE , $file) or
die "Cannot find $file !!! " ;
my $fileString = ; #slurp the whole file into one string !!!
close FILE ;
my $fileByteStream = decode('windows-1251', $fileString );
my $UTFSream = encode('UTF-8', $fileByteStream);
open (FILE , ">$file") or die "Cannot find $file !!! " ;
print FILE "$UTFSream" ;
close FILE ;
print $file , " converted to Windows -1251 done !! \n" ;
} #eof d

main(); #action!!!

1 ;

__END__
SOURCES:
http://search.cpan.org/~rgarcia/perl-5.9.4/pod/perlunitut.pod

Check out meem

2007-12-05

links regex

(https|http|ftp|news)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*

[^a-zA-Z] -- anything else but a letter
[^0-9] --- anything else but a digit

2007-12-03

Firefox add-ons

Enable Opera - like tabs switching
https://addons.mozilla.org/fi/ firefox/addon/1936
Stack Style Tabs



ot download everything from an web page with firefox :


http://www.downthemall.net/

https://addons.mozilla.org/extensions/moreinfo.php?id=1122&application= firefox


http://adblock.ethereal.net/alchemy.cgi/SessionSaver/

https://addons.mozilla.org/ firefox/1852/

https://addons.mozilla.org/firefox/60/



http://livehttpheaders.mozdev.org/


https://addons.mozilla.org/en-US/firefox/addon/1843


https://addons.mozilla.org/en-US/firefox/addon/5369

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