05-09-2002
According to the man page on bash it uses select also.
User Commands BASH(1)
select name [ in word ] ; do list ; done
The list of words following in is expanded, generating
a list of items. The set of expanded words is printed
on the standard error, each preceded by a number. If
the in word is omitted, the positional parameters are
printed (see PARAMETERS below). The PS3 prompt is then
displayed and a line read from the standard input. If
the line consists of a number corresponding to one of
the displayed words, then the value of name is set to
that word. If the line is empty, the words and prompt
are displayed again. If EOF is read, the command com-
pletes. Any other value read causes name to be set to
null. The line read is saved in the variable REPLY.
The list is executed after each selection until a break
or return command is executed. The exit status of
select is the exit status of the last command executed
in list, or zero if no commands were executed.
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shells(4) File Formats shells(4)
NAME
shells - shell database
SYNOPSIS
/etc/shells
DESCRIPTION
The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.
A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines
which search the file. Blank lines are also ignored.
The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh,
/bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/pfcsh, /usr/bin/pfksh,
/usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list.
Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)).
FILES
/etc/shells lists shells on system
SEE ALSO
vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)
SunOS 5.10 4 Jun 2001 shells(4)