Search in emacs with grep

Search pattern in different directories and different files:

M-x grep RETURN
grep -RnisIw --exclude-dir=bin MPEG2DEC ../

-I suppose to ignore binary files, but for some reason I have to add "--exclude-dir"
../ to search all directories from parent directory. Use ./ to search current directory

If only search all .c files:
grep -RnisIw --exclude-dir=bin --include=*.c MPEG2DEC ../

or exclude all .h files:
grep -RnisIw --exclude=*.h MPEG2DEC ../

M-x rgrep works too, but it has less controls.

Search current word in vi, and some others

Emacs guy has to use vi sometimes. Search word under cursor:
*
# (reverse)
--
0 : move to beginning of the line
$ : -----------end----
f(F): find a character in the line (fa)

some other commands [update: 10/27/09]:

nG : move to line #n, or G to end of the file
:n : move to line #n
:$ : move the end of the file
1G or [[ : move to first line of the file
G or ]] : ----------last-----
n+: move cursor to next n lines
n-: -------------------last-------
u : undo last command

ma: set a mark 'a' here, use 'a to move here later

Screen and Emacs shell history

look at the following link for Screen's copy/movement/search
http://sunsite.ualberta.ca/Documentation/Gnu/screen-3.9.4/html_chapter/screen_toc.html

Emacs shell history manual:
http://www.phys.ufl.edu/docs/emacs/emacs_410.html

Emacs: org-mode basic

Basic keys:

TAB, S-TAB	hide/show tree
C-c .	show date/time. Use S-arrow, S-< > to change. Type 20:01 directly
C-c C-s	schedule
C-c C-d	deadlin
C-c a	show all parameters
C-c a m	search tag
C-.	switch between files
[/], - [ ]	check list, [x] C-c C-c
S-up/down	priority A B C

Setup:

(require 'org-install)
(add-to-list 'auto-mode-alist '("\\.org$" . org-mode))
(define-key global-map "\C-cl" 'org-store-link)
(define-key global-map "\C-ca" 'org-agenda)
(setq org-log-done t)
(setq org-agenda-files (list "~/emacs/weisu_org/work.org"
                            "~/emacs/weisu_org/personal.org"))

Yahoo! messenger for Emacs

yod
do u really need im in Emacs?

RegEx basic

	Description	Examples
.	match any one character	.a.. sales1.xls
[ ]	define a character set	[ns]a[0-9]\.xls sam.xls na1.xls
^	anything but	[ns]a[0-9]\.xls sam.xls na1.xls
\d \D \w \W	any digit, same as [0-9] any nondigit [^0-9] same as [a-zA-Z0-9_]	\w\d\w\d\w\d M1B4F2 90046 H1H2H2
+	match one or more char	\w+@\w+\.\w+ Send personal email to ben@forta.com.
*	match 0 or more char	\w+[\w.]*@[\w.]+\.\w+ Hello .ben@forta.com is my email address.
?	match only 0 or 1 char	https?://[\w./]+ securely use https://www.forta.com/ instead.
{ }	intervals: {2,4}: min 2, max 4 {3,}: at least 3	\d{1,2}[-\/]\d{1,2}[-\/]\d{2,4} 4/8/03 10-6-2004 2/2/2 \d+: \$\d{3,}\.\d{2} 1001: $496.80 1002: $1290.69 1003: $26.43
*? +? {n,}?	Lazy matching *, +, {n,} are greedy matching	<[Bb]>.*</[Bb]> living in <B>AK</B> and <B>HI</B> <[Bb]>.*?</[Bb]> living in <B>AK</B> and <B>HI</B>
\b \B	match the start or end of a word,	\bcat\b The cat scattere cap\b captain recap
( )	treat as single entity	&nbsp;{2,} Windows&nbsp;&nbsp;200 (it matches &nbsp;;;;;) (&nbsp;){2,} Windows&nbsp;&nbsp;200 (\d{1,3}\.){3}\d{1,3} Pinging [12.159.46.200] (19|20)\d{2} DOB: 1967-08-17
?= ?<=	look ahead look behind	.+(?=:) http://www.forta.com/ (?<=\$)[0-9.]+ ABC01: $23.45

Emacs: Org-mode links

http://orgmode.org/
http://dto.freeshell.org/notebook/OrgTutorial.html
http://staff.science.uva.nl/~dominik/Tools/org/org.html
http://jaderholm.com/screencasts.html
http://orgmode.org/orgcard.pdf

Emacs Register

C-x r SPC a -- Save location of point in register a， or (C-x / a)
C-x r j a -- Jump to the location saved in register a, or(C-x j a)

C-x r x a -- Copy region into register a, or (C-x x a)
C-x r g a -- Insert text contents of register a, or (C-x g a)

M-x view-register RET a
Display a description of what register

Emacs: some keys in C mode

C-M-a : go to the beginning of the function
C-M-d : go to the end of the function
C-M-p :
C-M-n : { }
C-M-f :
C-M-b : ( )
C-M-u : go to the parent level
C-M-\ : indenting selected region
C-M-h : mark current function?

C-c C-q : indenting current function.

Etags

creates tags file: in specified directory, etags -R *
M-x visit-tags-table File
M-. lookfor tags the cursor on
M-, back to original place
C-. open another window and show tags
C-, close tags window
C-M-, search tags, use TAB and mouse mid-button

[update 2/14/2013]
or use following to create table:
 etags `find . -name "*.c" -o -name "*.cpp" -o -name "*.h"`
C-. to locate, and C-* to return

Letter instead of A4 in dvips, xdvi,

The default size of dvips and xdvi is A4. Use texconfig to switch to letter:

texconfig dvips paper letter
texconfig xdvi paper us

ansi-term, emacs start and search

M-x ansi-term : ssh root@128.

emacs -q : no customized
emacs -nw : no windows

C-M-s then regex
M-p(n): search history
M-x occur: words or regex

'/' drove me nuts?

Search for '/' and '/*', '//' show up? You got to check the isearch documents and incremental regexp

[^*]/[^*]

M-x set-variable ENTER case-fold-search ENTER nil ENTER
to make it case sensitive in current buffer tempeoraryly.

move cursor in emacs

M-m : first character (non-space)

C-M-a : beginning of function

C-M-e : end of function

C-M-f : next structure

C-M-b : last structure

paste (yank) in emacs

use 'browse-kill-ring.el' and add the following in .emacs file
[coolcode]
(require 'browse-kill-ring)
(global-set-key [(control c)(k)] 'browse-kill-ring)
(browse-kill-ring-default-keybindings)[/coolcode]

M-y (or C-c k) to open another frame to show all the copy history, use 'y' or 'i' to paste old one.

ibuffer in emacs

C-x C-b

/m - only show file with same mode
t - choose all
m - mark
u - unmark
v - view
S - save
D - kill buffer

Emacs Code Browser ECB installation in Emacs

download ecb, eieio, semantic, speedbar and 'tar zxfv xxxx' to ~/emacs directory

modify .emacs file

[coolcode](setq load-path (append load-path '("~/emacs/eieio")))

(setq load-path (append load-path '("~/emacs/semantic")))

(setq load-path (append load-path '("~/emacs/speedbar-0.14beta1")))

(setq load-path (append load-path '("~/emacs/ecb")))

(require 'ecb)

(load "~/emacs/speedbar/speedbar.el") ;; put this one at the end of other el files. [/coolcode]

restart emacs and M-x ecb-activate. A message popup 'ECB requires speedbar[.14beta1, 0.15.9], download from:http://nchc.dl.sourceforge.net/sourceforge/cedet/speedbar-0.14beta1.tar.gz

I think there was a default speedbar there, so specify the location of speedbar.el as above.

Etags

creates tags file: in specified directory, etags -R *

M-x visit-tags-table File

M-. lookfor tags the cursor on

M-, back to original place

C-. open another window and show tags

C-, close tags window

C-M-, search tags, use TAB and mouse mid-button

flyspell mode in Emacs

after we use M-flyspell-mode:

The error information: flyspell-mode-on: Symbol's function definition is void: ispell-maybe-find-aspell-dictionaries

Solution: download flyspell.el and follow the link:

http://www-sop.inria.fr/mimosa/Manuel.Serrano/flyspell/flyspell.html

gdb in emacs

M-x compile (update 4/9/2013: need debug info in your complilation, such as "g++ -g2 test.c")

gdb
file example1 (update 4/9/2013: example1 is the execuatable file, such as "a.out")
run
break: M-x space (break 19, break tmp1.c:19, break func1)
tbreak: only stop once then gone (temporary)
disable: disable breakpoints
ignore 2 5: skip next 5 corssing of breakpoint
step: step (into the function)
next:
finish: done the function and return
until: run until spcified line
print : check value
set x=3; modify variables
info breakpoints
delete breakpints (delete N)
watch x: will show new and old x when x changes