aa5140b7ec
The "exp" builtin is undocumented, non-standard and not very useful. If exp's return value is not used, something like VAR=$(exp EXPRESSION) is equivalent to VAR=$((EXPRESSION)) except that errors in the expression are fatal and quoting special characters is not needed in the latter case. If exp's return value is used, something like if exp EXPRESSION >/dev/null can be replaced by if [ $((EXPRESSION)) -ne 0 ] with similar differences. The exp-run showed that "let" is close enough to bash's and ksh's builtin that removing it would break a few ports. Therefore, "let" remains in 9.x. PR: bin/104432 Exp-run done by: pav (with some other sh(1) changes)
93 lines
2.9 KiB
Bash
93 lines
2.9 KiB
Bash
#!/bin/sh -
|
|
|
|
#-
|
|
# Copyright (c) 1991, 1993
|
|
# The Regents of the University of California. All rights reserved.
|
|
#
|
|
# This code is derived from software contributed to Berkeley by
|
|
# Kenneth Almquist.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# 4. Neither the name of the University nor the names of its contributors
|
|
# may be used to endorse or promote products derived from this software
|
|
# without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
# @(#)builtins.def 8.4 (Berkeley) 5/4/95
|
|
# $FreeBSD$
|
|
|
|
#
|
|
# This file lists all the builtin commands. The first column is the name
|
|
# of a C routine.
|
|
# The -j flag specifies that this command is to be excluded from systems
|
|
# without job control.
|
|
# The -h flag specifies that this command is to be excluded from systems
|
|
# based on the NO_HISTORY compile-time symbol.
|
|
# The -s flag specifies that this is a POSIX 'special built-in' command.
|
|
# The rest of the line specifies the command name or names used to run the
|
|
# command. The entry for bltincmd, which is run when the user does not specify
|
|
# a command, must come first.
|
|
#
|
|
# NOTE: bltincmd must come first!
|
|
|
|
bltincmd builtin
|
|
aliascmd alias
|
|
bgcmd -j bg
|
|
bindcmd bind
|
|
breakcmd -s break -s continue
|
|
cdcmd cd chdir
|
|
commandcmd command
|
|
dotcmd -s .
|
|
echocmd echo
|
|
evalcmd -s eval
|
|
execcmd -s exec
|
|
exitcmd -s exit
|
|
letcmd let
|
|
exportcmd -s export -s readonly
|
|
#exprcmd expr
|
|
falsecmd false
|
|
fgcmd -j fg
|
|
getoptscmd getopts
|
|
hashcmd hash
|
|
histcmd -h fc
|
|
jobidcmd jobid
|
|
jobscmd jobs
|
|
killcmd kill
|
|
localcmd local
|
|
printfcmd printf
|
|
pwdcmd pwd
|
|
readcmd read
|
|
returncmd -s return
|
|
setcmd -s set
|
|
setvarcmd setvar
|
|
shiftcmd -s shift
|
|
testcmd test [
|
|
timescmd -s times
|
|
trapcmd -s trap
|
|
truecmd -s : true
|
|
typecmd type
|
|
ulimitcmd ulimit
|
|
umaskcmd umask
|
|
unaliascmd unalias
|
|
unsetcmd -s unset
|
|
waitcmd wait
|
|
wordexpcmd wordexp
|