sam Editor
sam is the standard text editor on Plan 9.
A normal sam session begins with a new samterm window. You are expected to use the console at the top and mouse chording to manipulate files and edit text. sam behaves pretty much like ed if you invoke it with sam -d.
Cheatsheet
This is an HTML version of Steve Simon’s reference card.
n,m | line n to line m |
’ | address mark, see k below |
. | correct selection/position |
0 | correct selection/position |
ˆ | start of file |
$ | end of line/file |
, | equivalent to 0,$ |
. | any character |
* | 0 or more of previous |
+ | 1 or more of previous |
[ˆn] | correct selection/position |
[nm] | n or m |
(re) | tag pattern |
# | substitute #’th tagged pattern |
-/re/ | search backward |
+/re/ | search forward |
/re/ | search in same direction as last |
a/text/ | Append text after dot |
c/text/ | Change text in dot |
i/text/ | Insert text before dot |
d | Delete text in dot |
s/regexp/text/ | Substitute text for regexp in dot |
m address | Move dot to after address |
t address | Copy dot to after address |
p | Print contents of dot |
= | Print value of dot |
n | Print file menu list |
b file-list | Set current file to first in menu list |
B file-list | As b, but load new file-list |
D file-list | Delete named buffers |
e [file-name] | Replace current with file |
r file-name | Replace dot by contents of file |
w file-name | Write current to named file |
f [file-name] | Set current file name |
<< command | Replace dot by stdout of command |
> command | Send dot to stdin of command |
| command | Pipe dot through command |
! command | Run the command |
x/regexp/ command | Set dot and run command on each match |
x cmd | Set dot and run command on each matching line |
y/regexp/ command | as x but select unmatched text |
X/regexp/ command | Run command on files whose menu line matches |
Y/regexp/ command | As X but select unmatched files |
g/regexp/ command | If dot contains regexp, run command |
v/regexp/ command | If dot does not contain, run command |
k | Set address mark to value of dot |
q | Quit |
u n | Undo last n (default 1) changes |
{ } | Braces group commands |
<compose> Xnnnn | Insert char xxxx hex (Unix/Plan9) |
Alt-nnnn | Insert char xxxx hex (Windows) |
X/.*/,x/<cr>/d | strip <cr> from all files |
x/ˆ/ .,/0d | Strip C comments from selection |
-/ˆ/+#10 | goto the 10th colum in the current line |
-0+,+0- | round dot down to whole lines only |
,x/ +/ v/ˆ/ c/ / | compress runs of spaces, leaving indentation |
s/"([ˆ"]*)"/‘‘1’’/ | replace "hello" with ‘‘hello’’ in selection |
f <nl> | set current file-name to null |
> echo "" | insert ascii code xxx at current pos |
, > wc -l | count lines in file |
/text/+-p | highlight the lines containing <pat> |
-/text/ | search for text backwards |
$-/text/ | search for the last occurrence of text in file |
,x/<text>/+-p | grep for text |
.x/<pat>/ c/<rep>/ | search for <pat> and replace with <rep> |
B < echo *.c | add all the C files in current dir to file list |
B < grep -l <pat> * | add all the files containing <pat> to file list |
X/’/w | write all modified files |
Y/.c/D | remove all non C files from file list |
| fmt | pipe selection through the text formatter |
> mail <user> | send selection as Email to <user> |
x/0 a/0 | double space selection |
x/ˆ/ a/ / | indent selection 1 tab |
x/ˆ<tab>/d | remove 1 tab of indent from selection |
/(.+0+/ | matches blocks of text separated by blank lines |
! date | get current date in sam window |
,< wc | push file into wc, count appears in sam window |
0 < date | insert date at start of file |
1 < date | replace first line with todays date |
X D | remove out all up-to-date files |
,| sort | sort current file |
,x/ˆTODAY$/ < date | replace TODAY on with the output of date |
,x/Plan9/|tr a-z A-Z | replace all instances of Plan9 with upper case |
,t "junk.c" 0 | copy current file to start of junk.c |
-/.PP/,/.PP/- | highlight current paragraph in an nroff doc |
,x/[a-zA-Z0-9]+/ -#0;+#1 | tr a-z A-Z | capitalise every word (slow) |
,x[a-zA-Z]+/{ | swap fred for jim in file |