Index

Symbols

& (ampersand)

end of command line, 105

Perl procedure, 656

>> (append) operator, 64, 101

@_ array, in Perl, 657

* (asterisk) wildcard symbol, 65, 97

′ (backquote character), 127

\ (backslash), end-of-line, 586

{} (braces), in Perl, 652

[…] (brackets), use of, 97

[] (brackets) operator, 600

.(dot) operator

for current directory, 59

in Perl, 646

.. (dot-dot) operator

as range operator in Perl, 650

for parent directory, 59–60

“(double quotes), 129

< (input redirection) operator, 102

> (output redirection) operator, 64, 101

() (parentheses)

for grouping commands, 611–612

with Python variables, 679

| (pipe symbol), 86, 100, 586

? (question mark) wildcard, 97

‘(single-quote character), 127, 129

/ (slash)

in regular expressions, 622

for root directory, 58–59, 63, 299, 410–411

in URLs, 299

use of in UNIX vs. DOS, 525

/…/ (slashes), in regular expressions, 622

// (double slash), in URLs, 299

/dev directory, 403

/etc, subdirectories of, 410

/etc/master.d subdirectory, files in, 432

/home file system, 411

/proc file system, 324

/stand file system, 411

/usr file system, 411

/var file system, 412

~ (tilde), for home directory, 60, 67

$_ variable, in Perl, 655