Main Index

An italic page number such as 123 indicates a definition. A light page number such as 456 indicates a brief mention. Page numbers followed by the letter t refer to tables. Only variables that must always appear with a leading dollar sign are indexed with a leading dollar sign. Other variables are indexed without a leading dollar sign.

Symbols

^ in regular expressions 1108

^ quick substitution character 326

, (comma) operator 1037

; command separator 292

: (null) builtin 1018, 1027

:– substitutes default values for a variable 1017

:? displays an error message for a variable 1018

:= assigns default values for a variable 1017

! (NOT) Boolean operator 1040

!! re-executes the previous event 324

? in extended regular expressions 1112

?

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