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Index: R

r command (sed) : 5.11. Reading and Writing Files
rand() : 9.1.3. Random Number Generation
random numbers : 9.1.3. Random Number Generation
range of characters : (see character classes)
--re-interval option (gawk) : 11.2.3.1. Command line options
read command : (see r command (sed))
reading : 10.1. The getline Function
from files
5.11. Reading and Writing Files
10.1.1. Reading Input from Files
from pipe : 10.1.3. Reading Input from a Pipe
readsource script (example) : 13.6. readsource - Format Program Source Files for troff
RECLEN variable (tawk) : 11.3.2.1. Tawk language extensions
records, awk
2.4.1. Running awk
7.5. Records and Fields
B.2.1. Records and Fields
arrays and : 8.4. Arrays
fixed-length (tawk) : 11.3.2.1. Tawk language extensions
multiline : 7.7.1. Working with Multiline Records
NF variable : 7.7. System Variables
NR variable
7.7. System Variables
8.4. Arrays
10.1.2. Assigning the Input to a Variable
RT variable (gawk) : 11.2.3.5. Regular expression record terminators
separators for : (see delimiters)
redirection
2.3.2.1. Saving output
4.3. Testing and Saving Output
10.5. Directing Output to Files and Pipes
references : Other Sources of Information About sed and awk
referencing fields
2.4.1. Running awk
7.5.1. Referencing and Separating Fields
regular expressions
1.4. Four Hurdles to Mastering sed and awk
3. Understanding Regular Expression Syntax
B.2.3. Patterns
B.2.4. Regular Expressions
(see also pattern matching)
as constants : 7.8. Relational and Boolean Operators
delimiters for
2.1. Awk, by Sed and Grep, out of Ed
5.3. Substitution
dynamic, faking : 11.1.5. Faking Dynamic Regular Expressions
ed and : 2.1. Awk, by Sed and Grep, out of Ed
examples of : 3.3. I Never Metacharacter I Didn't Like
gawk extensions to : 11.2.3.4. Extended regular expressions
metacharacters for : (see metacharacters)
POSIX standard for : 3.2.4.3. POSIX character class additions
RS variable as
11.2.1.6. Regular expression record separators (gawk and mawk)
11.3.2.1. Tawk language extensions
tawk and : 11.3.2.1. Tawk language extensions
union of
3.2. A Line-Up of Characters
3.2.9. Alternative Operations
writing : 3.2.3. Writing Regular Expressions
relational expressions : B.2.3. Patterns
relational operators : 7.8. Relational and Boolean Operators
replacement metacharacters : 5.3.1. Replacement Metacharacters
numbered saves : 5.3.1. Replacement Metacharacters
replacing text
1.2. A Stream Editor
3.2.12.1. The extent of the match
retrieving data from files : 7.11. Information Retrieval
return statement
9.3. Writing Your Own Functions
9.3.1. Writing a Sort Function
revision control systems : 10.7.1. Make a Copy
RS variable : 7.7. System Variables
regular expression for
11.2.1.6. Regular expression record separators (gawk and mawk)
11.3.2.1. Tawk language extensions
RT variable (gawk) : 11.2.3.5. Regular expression record terminators
rules, pattern-matching : (see pattern matching)


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