R

radio button 974

RAID 974

RAM 974

RAM disk 974

random access memory see RAM

random file 659

random number generator 659

RANDOM variable 475

RAS 974

rcp utility 800–801

RDF 974

read access permission 93

read builtin 418, 447–449, 449t, 449–450

Readline completion commands 320–321

Readline Library command editor 318–324

Readline variables 322t

readonly builtin 295, 296

readonly memory see ROM

recursion, infinite (aliases) 327

redirect

see also redirection

and append standard output using >> 130

avoid overwriting a file using noclobber 129–130

output using a pipe (|) 56

overwriting files, avoid by using noclobber 377

separate standard output from standard error 359

standard input using < 128

standard input/output/error using exec 451

standard ...

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