Screen

2007-06-11T06:37:06Z

83.224.64.4:

=== Basics ===

Control-a (C-a) is screen attention sequence and preceeds all screen commands. For example, to create a new screen window, type control-a, then c. To clarify even further: hold control, type a, release control, press c.

c = new window
k = kill current window
d = detach from screen
? = show online help

From outside of the screen session:
screen -R = reattach
screen -x = multi-attach

=== caption and hardstatus ===
I use the following with Terminal's color scheme set to green on black:
caption always "%{Mk}%?%-Lw%?%{km}[%n*%f %t]%?(%u)%?%{mk}%?% Lw%? %{mk}"
hardstatus alwayslastline "%{kW}%H %{kB}|%{km} %l %=%{km}%c:%s %D %M/%d/%Y "

=== Navigation ===
" = list window names, numbers, and flags
N = show current window number
A = set window name
' = specify name or number to switch to
space = next window
backspace = prev window
# = goto window number #
w = show window list in status bar
C-a = switch to most recent window

=== Split Windows ===
S = create split in current region
tab = move to next region
X = delete current region
Q = delete all but current region

=== Monitoring ===
M = toggle activity monitor notifications in status bar
_ = toggle INactivity monitor notification in status bar (e.g. for when something's done compiling)
m = recall last message displayed in status bar
C-g = toggle audio / visual bell
t = show time / load average

=== Scrollback / copy mode movement keys ===

[ = enter copy mode
h, j, k, l move the cursor line by line or column by column.
0, ^ and $ move to the leftmost column, to the first or last non-
whitespace character on the line.
H, M and L move the cursor to the leftmost column of the top, center
or bottom line of the window.
and - positions one line up and down.
G moves to the specified absolute line (default: end of buffer).
| moves to the specified absolute column.
w, b, e move the cursor word by word.
B, E move the cursor WORD by WORD (as in vi).
C-u and C-d scroll the display up/down by the specified amount of
lines while preserving the cursor position. (Default: half screen-
full).
C-b and C-f scroll the display up/down a full screen.
g moves to the beginning of the buffer.
% jumps to the specified percentage of the buffer.

===Pasteboard===
Read the /etc/passwd file into register p and paste it back out
C-a : readreg p /etc/passwd
C-a : paste p

Marking:
The copy range is specified by setting two marks. The text between
these marks will be highlighted. Press
space to set the first or second mark respectively.
Y and y used to mark one whole line or to mark from start of line.
W marks exactly one word.
Repeat count:
Any of these commands can be prefixed with a repeat count number by
pressing digits 0..9 which is taken as a repeat count.
Example: "C-a C-[ H 10 j 5 Y" will copy lines 11 to 15 into the
paste buffer.
Searching:
/ Vi-like search forward.
? Vi-like search backward.
C-a s Emacs style incremental search forward.
C-r Emacs style reverse i-search.
Specials:
There are however some keys that act differently than in vi. Vi
does not allow one to yank rectangular blocks of text, but screen
does. Press c or C to set the left or right margin respectively. If no repeat
count is given, both default to the current cursor position.
Example: Try this on a rather full text screen: "C-a [ M 20 l SPACE
c 10 l 5 j C SPACE".
This moves one to the middle line of the screen, moves in 20 col-
umns left, marks the beginning of the paste buffer, sets the left
column, moves 5 columns down, sets the right column, and then marks
the end of the paste buffer. Now try:
"C-a [ M 20 l SPACE 10 l 5 j SPACE"
and notice the difference in the amount of text copied.
J joins lines. It toggles between 4 modes: lines separated by a new-
line character (012), lines glued seamless, lines separated by a
single whitespace and comma separated lines. Note that you can
prepend the newline character with a carriage return character, by
issuing a "crlf on".
v is for all the vi users with ":set numbers" - it toggles the left
margin between column 9 and 1. Press
a before the final space key to toggle in append mode. Thus the con-
tents of the paste buffer will not be overwritten, but is appended
to.
A toggles in append mode and sets a (second) mark.
> sets the (second) mark and writes the contents of the paste buffer
to the screen-exchange file (/tmp/screen-exchange per default) once
copy-mode is finished.
This example demonstrates how to dump the whole scrollback buffer
to that file: "C-A [ g SPACE G $ >".
C-g gives information about the current line and column.
x exchanges the first mark and the current cursor position. You can
use this to adjust an already placed mark.
@ does nothing. Does not even exit copy mode.
All keys not described here exit copy mode.

=== Commands ===

Commands can exist in .screenrc or can be entered interactively with C-a, :

send the 'whoami' command to all screen windows simultaneously (\015 is octal for carriage return)
at \# stuff "whoami\015"

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