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A Practical Guide to Ubuntu Linux (Versions 8.10 and 8.04), Second Edition by Mark G. Sobell

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Main Index

An italic page number such as 123 indictes 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

! (NOT) Boolean operator 980

!! reexecutes the previous event 319

# comment symbol 287, 920

# prompt 404

#! specifies a script shell 286, 919

$ bash parameters 950–955

$ in regular expressions 1046

$ in variable names 298

$! parameter 952

$# parameter 953

$$ parameter 939, 951

$((...)) see arithmetic, expansion

$(...) see command, substitution

$* parameter 955

$? parameter 952

$@ parameter 925 ...

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