Index

Note: 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

! Boolean operator, 313, 954, 958

! variable, 321

!! to reexecute the previous event, 321

!$ last word of the previous event, 323

# comment, 289

# prompt, 405

# variable, 931

#! to choose a script shell, 288

$ in regular expressions, 1026

$ in variable name, 301

$! variable, 930

$# variable, 915

$$ variable, 917, 929

$(...). See Command, substitution

$* variable, 932

$? variable, 930

$@ variable, 903, 932

${}, expand variable, 935

$0 variable, 931

% job number, 242, 295

& background, 241, 292–294, 316, 930

& background process, 1070

& bitwise operator, 954,

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