[unix-history] / usr / doc / csh / csh.a

.SH
Appendix \- Special characters
.LP
The following table lists the special characters of
.I csh
and the \s-2UNIX\s0 system, giving for each the section(s) in which it
is discussed.
A number of these characters also have special meaning in expressions.
See the
.I csh
manual section
for a complete list.
.LP
Syntactic metacharacters
.DS
;	2.4	separates commands to be executed sequentially
|	1.5	separates commands in a pipeline
( )	2.2,3.6	brackets expressions and variable values
&	2.5	follows commands to be executed without waiting for completion
.DE
.LP
Filename metacharacters
.DS
/	1.6	separates components of a file's pathname
\.	1.6	separates root parts of a file name from extensions
?	1.6	expansion character matching any single character
*	1.6	expansion character matching any sequence of characters
[ ]	1.6	expansion sequence matching any single character from a set
~	1.6	used at the beginning of a filename to indicate home directories
{ }	4.2	used to specify groups of arguments with common parts
.DE
.LP
Quotation metacharacters
.DS
\e	1.7	prevents meta-meaning of following single character
\'	1.7	prevents meta-meaning of a group of characters
"	4.3	like \', but allows variable and command expansion
.DE
.LP
Input/output metacharacters
.DS
<	1.3	indicates redirected input
>	1.5	indicates redirected output
.DE
.LP
Expansion/substitution metacharacters
.DS
$	3.4	indicates variable substitution
!	2.3	indicates history substitution
:	3.6	precedes substitution modifiers
\(ua	2.3	used in special forms of history substitution
\`	4.3	indicates command substitution
.DE
.LP
Other metacharacters
.DS
#	1.3,3.6	begins scratch file names; indicates shell comments
\-	1.2	prefixes option (flag) arguments to commands
.DE
.bp
Commit	Line	Data
38f80fd7 BJ	1	.SH
	2	Appendix \- Special characters
	3	.LP
	4	The following table lists the special characters of
	5	.I csh
	6	and the \s-2UNIX\s0 system, giving for each the section(s) in which it
	7	is discussed.
	8	A number of these characters also have special meaning in expressions.
	9	See the
	10	.I csh
	11	manual section
	12	for a complete list.
	13	.LP
	14	Syntactic metacharacters
	15	.DS
	16	; 2.4 separates commands to be executed sequentially
	17	\| 1.5 separates commands in a pipeline
	18	( ) 2.2,3.6 brackets expressions and variable values
	19	& 2.5 follows commands to be executed without waiting for completion
	20	.DE
	21	.LP
	22	Filename metacharacters
	23	.DS
	24	/ 1.6 separates components of a file's pathname
	25	\. 1.6 separates root parts of a file name from extensions
	26	? 1.6 expansion character matching any single character
	27	* 1.6 expansion character matching any sequence of characters
	28	[ ] 1.6 expansion sequence matching any single character from a set
	29	~ 1.6 used at the beginning of a filename to indicate home directories
	30	{ } 4.2 used to specify groups of arguments with common parts
	31	.DE
	32	.LP
	33	Quotation metacharacters
	34	.DS
	35	\e 1.7 prevents meta-meaning of following single character
	36	\' 1.7 prevents meta-meaning of a group of characters
	37	" 4.3 like \', but allows variable and command expansion
	38	.DE
	39	.LP
	40	Input/output metacharacters
	41	.DS
	42	< 1.3 indicates redirected input
	43	> 1.5 indicates redirected output
	44	.DE
	45	.LP
	46	Expansion/substitution metacharacters
	47	.DS
	48	$ 3.4 indicates variable substitution
	49	! 2.3 indicates history substitution
	50	: 3.6 precedes substitution modifiers
	51	\(ua 2.3 used in special forms of history substitution
	52	\` 4.3 indicates command substitution
	53	.DE
	54	.LP
	55	Other metacharacters
	56	.DS
	57	# 1.3,3.6 begins scratch file names; indicates shell comments
	58	\- 1.2 prefixes option (flag) arguments to commands
	59	.DE
	60	.bp