cscope笔记

LNX=/home/jru/linux-2.4.18
cd /
find $LNX -path “$LNX/arch/*” ! -path “$LNX/arch/i386*” -prune -o -path “$LNX/include/asm-*” ! -path “$LNX/include/asm-i386*” -prune -o -path “$LNX/tmp*” -prune -o -path “$LNX/Documentation*” -prune -o -path “$LNX/scripts*” -prune -o -path “$LNX/drivers*” -prune -o -name “*.[chxsS]” -print >/home/jru/cscope/cscope.files

cscope -b -q -k
-b build the database without launching Cscope GUI
-q additional ‘inverted index’
-k ‘kernel’ mode, turn off the use of default include dir

export CSCOPE_DB=./cscope.out

vim -t symbol_name

See also
http://cscope.sourceforge.net/large_projects.html

VIM笔记

=============================
help
=============================
PREPEND
Visual mode commands v_
Insert mode commands i_
Command-line commands :
Command-line editing c_
Options ‘ // :help ‘textwidth’

=============================
editing
=============================
:g+//+s/foobar/barfoo/g // g[lobal]默认作用范围是整个文件
:g/./,/^$/join

!5Gsort<Enter>
!{motion}{filter}
!!{filter}

set virtualedit=all
set virtualedit=

=============================
motion
=============================
:map <Space> W
g前缀使命令不是linewise的，常在wrap时和原命令有所区别

; Repeat latest f, t, F or T [count] times.
, Repeat latest f, t, F or T in opposite direction [count] times.

word WORD w W
sentences ( )
paragraph { }
section ]] ][ [[ [] // 函数”{“须在第一列
]} [{ ]) [( ]/ [/

// Text object selection
// can only be used while in Visual mode or after an operator
The commands that start with "a" select "a"n object including white space, the
commands starting with "i" select an "inner" object without white space, or
just the white space.

aw aW as ap a] a[ a) a( a> a< a} a{ // s for sentence && p for paragraph
iw iW is ip i] i[ i) i( i> i< i} i{ // excluding ] [ ) ( > < } {

:set guioptions+=b // 显示滚动条

ze when 'wrap' off scroll horizontally to position the cursor at the end (right side) of the screen.
zh when 'wrap' off scroll screen N characters to the right.
zl when 'wrap' off scroll screen N characters to the left.
zs when 'wrap' off scroll horizontally to position the cursor at the start (left side) of the screen.

=============================
motion-II
=============================
CTRL-O Go to [count] Older cursor position in jump list (not a motion command).
CTRL-I Go to [count] newer cursor position in jump list (not a motion command).

=============================
programming
=============================
:tags // 显示tag stack
:tag {tagname} // 缺省时至stack的top
CTRL-]
:ptag tagname // preview
CTRL-W }
:pclose
:pedit
:psearch
:stag tagname
CTRL-W ]
CTRL-T

:set tags=./tags,./../tags,./*/tags
:set tags=./*/tags
:!ctags -R *

:tnext
:tselect tagname
:tag /block 再按tab补齐

[i // 第一个匹配项
[I // [<Tab> 跳转到[I找到的第一条匹配项
]I // start at the current cursor position
[D // 宏定义

:set path+=d:\mingw\include\*
:checkpath

=============================
text formatting
=============================
:set cindent shiftwidth=4
gg=G
:set textwidth=80

<CTRL-V> // <CTRL-Q> for Windows
Istring<Esc>
cstring<Esc>

:center // :{range}center [width]
:right

=============================
map command autocmd
=============================
map <F7> a{
:map <F3> oDate: <Esc>:read !date<CR>kJ

:command -nargs=* DoIt :call AFunction(<f-args>)

:autocmd [group] {events} {file_pattern} [nested] {command}

:augroup cprograms
: autocmd BufReadPost *.c,*.h :set sw=4 sts=4
: autocmd BufReadPost *.cpp :set sw=3 sts=3
:augroup END

:autocmd! cprograms //删除

=============================
vim-script
=============================
b:name buffer variable
w:name window variable
g:name global variable (also in a function)
v:name variable predefined by Vim
s:name script variable
l:name local variable
a:name function argument

$NAME environment variable
&name option
@r register

:execute “tag ” . tag_name // . for cancatenate
—> :tag tag_name
:normal gg=G
:execute “normal ” . normal_commands
:execute “normal Inew text \<Esc>”

=============================
useful links for VIM scripts
=============================
c.vim http://vim.sourceforge.net/scripts/script.php?script_id=213
——-
Setting
——-
see doc
——-
Usage
——-
<A-F9> save and compile
<F9> link
<C-F9> run

taglist.vim http://vim.sourceforge.net/scripts/script.php?script_id=273
——-
Notes
——-
noremap <silent> <F11> <Esc><Esc>:Tlist<CR>
inoremap <silent> <F11> <Esc><Esc>:Tlist<CR>
——-
Usage
——-
<CR> Jump to the location where the tag under cursor is
defined.
o Jump to the location where the tag under cursor is
defined in a new window.
p Display the tag definition in the file window and
keep the cursor in the taglist window itself.
<Space> Display the prototype of the tag under the cursor.
u Update the tags listed in the taglist window
s Change the sort order of the tags (by name or by order)
d Remove the tags for the file under the cursor
x Zoom-in or Zoom-out the taglist window
+ Open a fold
- Close a fold
* Open all folds
= Close all folds
[[ Jump to the beginning of the previous file
<Backspace> Jump to the beginning of the previous file
]] Jump to the beginning of the next file
<Tab> Jump to the beginning of the next file

EnhCommentify.vim http://vim.sourceforge.net/scripts/script.php?script_id=23
——-
Setting
——-
let g:EnhCommentifyRespectIndent = ‘yes’
let g:EnhCommentifyPretty = ‘yes’
let g:EnhCommentifyAlignRight = ‘yes’
——-
Usage
——-
\x \c

bufexplorer.zip http://vim.sourceforge.net/scripts/script.php?script_id=42
——-
Notes
——-
Needed by winmanager
——-
Usage
——-
\be \bs

winmanager http://vim.sourceforge.net/scripts/script.php?script_id=95
——-
Notes
——-
noremap <silent> <F4> <Esc><Esc>:WMToggle<CR>
inoremap <silent> <F4> <Esc><Esc>:WMToggle<CR>
——-
Usage
——-
:WManager :WMClose :WMToggle

1: File Explorer Area
<tab> : open the file or directory in a new window in the FileEditing area.
c : change the pwd to the directory currently displayed
C : change the currently displayed directory to pwd (converse of c)
s : select sort field (size, date, name)
r : reverse direction of sort
R : rename file
D : delete file
- : move up one level

cppcomplete http://vim.sourceforge.net/scripts/script.php?script_id=527
——-
Notes
——-
default mapping of <F9> conflicts with c.vim
<F8> <F9> –> <F7> <F8>
——-
Usage
——-
<A-j> <A-l> <F7> <F8> <F5>

a.vim http://vim.sourceforge.net/scripts/script.php?script_id=31
——-
Usage
——-
:A :AS :AV

borland.vim http://vim.sourceforge.net/scripts/script.php?script_id=92
——-
Usage
——-
:colorscheme borland

xmledit http://vim.sourceforge.net/scripts/script.php?script_id=301
cvsmenu.vim http://vim.sourceforge.net/scripts/script.php?script_id=58
project.tar.gz http://vim.sourceforge.net/scripts/script.php?script_id=69
grep.vim http://vim.sourceforge.net/scripts/script.php?script_id=311

————————————————–
摘录自：
VIM USER MANUAL
VIM 手册中文版 by ZhaoRuFei

awk笔记

awk -F”:” ‘{ print “username: ” $1 “\t\tuid:” $3 }’ /etc/passwd

awk ‘FS=”:” {OFS=”-”} {print NR “–>” $1, $2}’ /etc/passwd

awk ‘{x=x+$3} {print NR, $3, x}’ data
awk ‘{x=x+$3} END {print NR, $3, x}’ data

awk ‘{x=x+$3} {print NR, $3, x “sort -nr”}’ data

FS=”[[:space:]+]”

NF The number of fields in the current input record.
NR The total number of input records seen so far.
OFMT The output format for numbers, “%.6g”, by default.
OFS The output field separator, a space by default.
ORS The output record separator, by default a newline.

awk中数组从1开始

for ( x in myarray ) {
print myarray[x]
}
当 awk 在数组下标之间轮转时，它不会依照任何特定的顺序

delete fooarray[1]

print length(mystring)

print index(mystring,”you”)

print tolower(mystring)
print toupper(mystring)
print mystring // unchanged

mysub=substr(mystring,startpos,maxlen)

print match(mystring,/you/), RSTART, RLENGTH
RSTART 包含返回值（第一个匹配的位置），RLENGTH 指定它占据的字符跨度（如果没有找到匹配，则返回 -1）。

sub(regexp,replstring,mystring)
sub() 将替换第一个 regexp 匹配（如果有的话），gsub() 将执行全局替换

numelements=split(“Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec”,mymonths,”,”)

test.awk
———
BEGIN { x=0 }
/^$/ { x=x+1 }
END { print “I found ” x ” blank lines. ” }
—————
awk -f test.awk inputfile

摘录自：
http://www-128.ibm.com/developerworks/cn/linux/shell/awk/awk-1/index.html
http://www-128.ibm.com/developerworks/cn/linux/shell/awk/awk-2/index.html
http://www-128.ibm.com/developerworks/cn/linux/shell/awk/awk-3/index.html

gdb笔记

(gdb) set $i=0
(gdb) while argv[$i] != 0
>print argv[$i++]
>end

(gdb) x /2cb argv[0]
0xfef82b5e: 47 ‘/’ 114 ‘r’
(gdb) x /2tb argv[0]
0xfef82b5e: 00101111 01110010
(gdb) x /2tw argv[0]
0xfef82b5e: 01101111011011110111001000101111 01101111011101110010111101110100

>silent
>set $p=obj
>while $p != 0
>print $p->name
>set $p=$p->next
>end
>cont (断点不停)

backtrace (bt)
info frame
up
info frame
info locals
frame 0
return 10

call printf(“test\0″)
call fflush(0)

disassemble
watchpoint
display
info display show display

http://www.linuxforum.net/books/LinuxFAQ/program-gdb.html