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Index: F

-f option (awk)

9.3.2. Maintaining a Function Library
11.2.3.1. Command line options

-f option (sed)

2.2. Command-Line Syntax
2.3.2. Script Files
2.3.2.3. Mixing options (POSIX)

-F option (awk)

2.4.1. Running awk
7.5.1. Referencing and Separating Fields

factorials : 8.2.4. Deriving Factorials

faking dynamic regular expressions : 11.1.5. Faking Dynamic Regular Expressions

FAQ on awk : Other Sources of Information About sed and awk

fflush() : 11.2.1.3. Flushing buffered output

field separators : (see delimiters)

fields for awk records

2.4.1. Running awk
7.5. Records and Fields
B.2.1. Records and Fields
formatting as output : 7.9. Formatted Printing
NF variable : 7.7. System Variables

FIELDSWIDTHS variable (gawk) : 11.2.3.6. Separating fields

File Transfer Protocol (FTP) : FTP

files

closing

10.2. The close() Function
10.5.2. Working with Multiple Files

editing multiple : 4.4.2. Making Changes Across a Set of Files

extracting contents from : 4.4.3. Extracting Contents of a File

filenames, special : 11.2.1.4. Special filenames

getting information on : 7.8.1. Getting Information About Files

Interleaf, converting : 6.1.1.1. Converting an Interleaf file

multiple : 10.5.2. Working with Multiple Files

multiple edits to : 4.4.1. Multiple Edits to the Same File

nextfile statement : 11.2.1.5. The nextfile statement

reading from

5.11. Reading and Writing Files
10.1.1. Reading Input from Files

retrieving information from : 7.11. Information Retrieval

scripts as : (see scripts)

search path for : 11.2.3.2. An awk program search path

special gawk : 11.2.3.7. Additional special files

writing to

2.3.2.1. Saving output
5.11. Reading and Writing Files
10.5. Directing Output to Files and Pipes

fixed strings : 3.2.3. Writing Regular Expressions

flags : 5.3. Substitution

g (global)

2.1. Awk, by Sed and Grep, out of Ed
5.3. Substitution

numeric : 5.3. Substitution

p (print) : 5.3. Substitution

w (write) : 5.3. Substitution

flow control

6. Advanced sed Commands
6.3.3. Building Blocks of Text
11.1.6. Control Flow
branching : 6.4.1. Branching
d command (sed) : 5.4. Delete
n command : 5.10. Next

flushing buffers : 11.2.1.3. Flushing buffered output

FNR variable

7.7. System Variables
10.1.2. Assigning the Input to a Variable

for loop

8.2.3. For Loop
8.4.1. Associative Arrays

formatting

awk output : 7.9. Formatted Printing
awk scripts : B.2.2. Format of a Script
index (example program) : 12.2. Generating a Formatted Index
system time : 11.2.3.11. Time management for programmers

FPAT variable (tawk) : 11.3.2.1. Tawk language extensions

Free Software Foundation (FSF) : Availability of sed and awk

FS variable

7.5.1. Referencing and Separating Fields
7.5.2. Field Splitting: The Full Story
7.7. System Variables
11.2.1.2. Obtaining individual characters

FTP (File Transfer Protocol) : FTP

Ftpmail : Ftpmail

function keyword : 9.3. Writing Your Own Functions

functions

11.1.10. Functions

B.2.6. Statements and Functions

arithmetic

9.1. Arithmetic Functions
11.1.10. Functions

built-in

gawk : 11.2.3.9. Additional functions
tawk : 11.3.2.2. Additional built-in tawk functions

creating library of : 9.3.2. Maintaining a Function Library

scope control (tawk) : 11.3.2.1. Tawk language extensions

string-related : 9.2. String Functions

time-related (gawk) : 11.2.3.11. Time management for programmers

trigonometric : 9.1.1. Trigonometric Functions

user-defined : 9.3. Writing Your Own Functions

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