Predefined Aliases (Learning the Korn Shell, 2nd Edition) B.3. Predefined Aliases A number of aliases are predefined, i.e. automatically built-in to ksh at compile time. They are listed in the table below. Note that some of them are defined with a trailing space character. This enables alias expansion on the word following the alias on the command line. Name Chapter Full value autoload 4, 6 alias autoload='typeset -fu' command 7 alias command='command ' fc 2 alias fc=hist float 6 alias float='typeset -E' functions 6 alias functions='typeset -f' hash 3 alias hash='alias -t --' history 2 alias history='hist -l' integer 6 alias integer='typeset -i' nameref 4 alias nameref='typeset -n' nohup 3, 8 alias nohup='nohup ' r 2 alias r='hist -s' redirect 9 alias redirect='command exec' stop 8 alias stop='kill -s STOP' times   alias times='{ {time;} 2>&1;}' type 4 alias type='whence -v' B.2. Built-in Commands and KeywordsB.4. Built-in Shell Variables Copyright © 2003 O'Reilly & Associates. All rights reserved.