Interactive Programs

Xemacs emacs

Indent everything

M-x indent-region

Forward search

C-s

Backward search

C-r

Repeat old searches

C-s M-p
C-s M-n

Regexp search

C-M-s

Search word under the cursor (beginning at the cursor position)

C-s C-w

Show only lines which match your regular expression

M-x occur RET foo
M-x list-matching-lines RET foo

Removes lines which matches regular expressions

M-x flush-lines

Removes lines which does not match regular expression

M-x keep-lines

Counts the number of occurrences for the given expression

M-x count-matches RET foo

Execute grep and get output

M-x grep RET grep -e root /etc/passwd

Search and replace

M-%

Set mark

C-SPACE

Mark paragraph

M-h

Mark whole buffer

C-x h

Cut region

C-w

Copy region

ESC-w

Insert region

C-y

Split Window

C-x 2

Split Window side by side

C-x 3

Jump to an other part of the window

C-x o

Unsplit Window

C-x 1

New Window

C-x 5 2

Close Window

C-x 5 0

Close Buffer

C-x k RET

Switch to another buffer

C-x b RET

Insert a spoiler (^L):

C-q C-l

Record Macro

Start	C-x (
Stop	C-x )
Execute	C-x e
Edit last macro	C-x C-k

Replaces newlines

M-q

Make current word upper case

M-u

Make current word lower case

M-l

Compare two files, buffers or directories

M-x ediff
M-x ediff-buffers
M-x ediff-directories

Emacs file manager

M-x dired

The last 4 Words before the current cursor position are automatically inserted whenever you type foo

C-u 4 C-x a + RET foo
M-x list-abbrevs
M-x edit-abbrevs
M-x write-abbrev-file RET ~/.abbrev_defs
M-x abbrev-mode

Example init.el

Search and Replace and line breaks

You can use this

C-q C-j

to insert a line break with search and replace.

Select Columns, Copy and Past columns

In emacs you can not only select rows for copy and paste but also columns.
In order to achieve this, just move the cursor to the top left position of your column (in this example we assume it should start at the letter A). Now select CTRL-SPACE to start the selection.

xx Ax xx
xx xx xx
xx xB xx
xx xx xx

Afterwards, move the cursor to the lower right corner of your column. (We assume this will be at the letter B). Now you can issue

M-x kill-rectangle

The column disapears

xx  xx
xx  xx
xx  xx
xx xx xx

You can insert it again with the command

M-x yank-rectangle

Open remote files and directories

C-x C-f RET /username@ftp.example.com:/foo/bar.txt RET

Change to passive mode

M-x customize-option RET ange-ftp-try-passive-mode RET

Command mode	ESC
Insert mode	i
Append after cursor mode	a
Append after linebreak mode	A
Replace one character	r
Replace mode	R

Files

Open file	:e
Reload file	:e!
Open file, jump to the end of the file	:e +
Open file, jump to line z	:e +z
Show filename + linenumber	:f
Next file	:n
Save file	:w (:w!)
Quit	:q (:q!)
Save + Quit	:wq (ZZ)

Navigation

Move one position to the left, right, up, down	h l k j
Move one page nach up	CTRL f
Move one page down	CTRL b
Move to the beginning of the file	0
Move to the end of the file	$
Move to line z	:z NR
Move to the beginning of the line	^
Move to the end of the line	$

Edit

Delete everything from here to the end of the line	D
Delete this line	dd
Delete this character	x (dl)
Copy this line	y
Copy the next n lines	nyy
Paste after this line	p
Paste before this line	P
Undo	u
Undo this line	U

Search, Replace

Search	/
Search backwards	?
Continue search	n
Continue search but backwards	N
Replace the next alt with neu	:s/alt/neu/
Replace in this line all alt with neu	:s/alt/neu/g
Replace from line anfang till line ende in each line the first alt with neu (use $ for the last line)	:[anfang,ende]s/alt/neu/
Example:	:3,5s/Fogel/Vogel/

General

Show user settings	:set
Show all settings	:set all
Repeat command	.

18-05-2008 15.06

screen

Start a program with screen	screen prg
Send the program to the background	C-a C-d
Restore the program	screen -r PID

06-08-2005 13.09

blender

Object scale (x,y,z direction)	s, s x, s y, s z
Object rotate (x,y,z direction)	r, r x, r y, r z
Object move (x,y,z direction)	g, g x, g y, g z
Edit / objekt Mode	TAB
Duplicate objekt	SHIFT d
Join objekts	CTRL J

06-08-2005 13.09

Stow

mkdir /usr/local/stow/paket
cd /usr/local/src/
tar xzf quelle.tgz
cd quellpaket
./configure
make
make install prefix=/usr/local/stow/paket
cd /usr/local/stow
stow -n paket
stow paket

06-08-2005 13.09

Subversion (svn)

Revision / version control Subversion

05-06-2006 21.34

Bochs

Bochs Manual

```
bximage
```

.bochsrc

romimage: file=/usr/share/bochs/BIOS-bochs-latest, address=0xf0000
megs: 256
vgaromimage: /usr/share/vgabios/vgabios.bin
ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
ata1: enabled=0, ioaddr1=0x170, ioaddr2=0x370, irq=15
ata2: enabled=0, ioaddr1=0x1e8, ioaddr2=0x3e0, irq=11
ata3: enabled=0, ioaddr1=0x168, ioaddr2=0x360, irq=9
# bximage -> X
ata0-master: type=disk, path="c.img", mode=flat, cylinders=X, heads=X, spt=X
#boot: disk
boot: cdrom
ips: 5000000
#sb16: midimode=1, midi=/dev/midi00, wavemode=1, wave=/dev/dsp, loglevel=2, log=/dev/stdout, dmatimer=600000
ne2k: ioaddr=0x240, irq=9, mac=12:34:56:78:90:01, ethmod=linux, ethdev=eth0
usb1: enabled=1, ioaddr=0xFF80, irq=10

06-08-2005 13.09

gnuplot> plot [-pi:pi] sin(x), cos(x)
gnuplot> splot sin(x*y/20)
gnuplot> plot x**2
gnuplot> set out "/tmp/my_output.ps"
gnuplot> set terminal postscript portrait enhanced color

Data -> Diagram

gnuplot> plot "myfile.dat" using 1:2 title "2*x" with lines, "myfile.dat" using 1:3 title "x*x" with lines
myfile.dat:
0  0  1
1  2  2
2  4  4
3  6  8
4  8 16
5 10 32

Time / Date Axis

gnuplot> set xdata time
gnuplot> set timefmt "%Y%j"
gnuplot> set format x "%Y_%m"

Even More GNU Plot Commands

set boxwidth 0.1
set yrange [0:60]
set yrange [0:*]
set xrange [-1.5:1.5]

set xlable "Foo"

set format y '%g MB/s'

set xtics ('foo' 1, '2 bar' 2)
set mytics 2

set grid
set style fill pattern border

plot "myfile.dat" using 1:2 title "foo" with boxes, "gp" using 1:3 title "bar" with boxes

set terminal png size 800 600
set output "/tmp/my_output.png"

replot

05-12-2008 21.58

Without leading break	TRACK AUDIO NO COPY FILE "01.wav" 00:00:00
With a 10 second leading break	TRACK AUDIO NO COPY SILENCE 00:10:00 START FILE "01.wav" 00:00:00
Only the part from 3 minutes 5 seconds to 3 minutes 35 seconds	TRACK AUDIO NO COPY FILE "01.wav" 03:05:00 00:30:00
Part from 1 minute to 1 minute 30 seconds from file 01.wav and from file 02.wav everything from 2 minutes. After 1 minute and 30 seconds the index is increased	TRACK AUDIO FILE "01.wav" 01:00:00 00:30:00 SILENCE 00:02:00 FILE "02.wav" 02:00:00 INDEX 01:30:00

Take all wav files beneath the current folder and create a toc file for an audio CD without breaks

{
  echo CD_DA;
  find . -name "*.wav" | while read line;
   do
    echo "TRACK AUDIO";
    echo "NO COPY";
    echo "FILE \"$line\" 00:00:00";
    echo;
   done
} > myaudiocd.toc

06-08-2005 13.09

Ethereal

Filter

ethereal filter

(not tcp.port eq 22 and ip.addr eq 10.0.0.3 )
!(ip.addr eq 10.0.0.3)

06-08-2005 13.09

Interactive Programs

Content

Xemacs emacs

Search and Replace and line breaks

Select Columns, Copy and Past columns

Open remote files and directories

Links

VI

Command Line

Modes

Files

Navigation

Edit

Search, Replace

General

screen

blender

Stow

Subversion (svn)

Bochs

GNU Plot

Links

Function -> Diagram

Data -> Diagram

Time / Date Axis

Even More GNU Plot Commands

cdrdao

toc Datei

Audio-Tracks

Ethereal

Filter