This is the command dotposix that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
dot — execute commands in the current environment
SYNOPSIS
. file
DESCRIPTION
The shell shall execute commands from the file in the current environment.
If file does not contain a <slash>, the shell shall use the search path specified by PATH
to find the directory containing file. Unlike normal command search, however, the file
searched for by the dot utility need not be executable. If no readable file is found, a
non-interactive shell shall abort; an interactive shell shall write a diagnostic message
to standard error, but this condition shall not be considered a syntax error.
OPTIONS
None.
OPERANDS
See the DESCRIPTION.
STDIN
Not used.
INPUT FILES
See the DESCRIPTION.
ENVIRONMENT VARIABLES
See the DESCRIPTION.
ASYNCHRONOUS EVENTS
Default.
STDOUT
Not used.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
None.
EXIT STATUS
If no readable file was found or if the commands in the file could not be parsed, and the
shell is interactive (and therefore does not abort; see Section 2.8.1, Consequences of
Shell Errors), the exit status shall be non-zero. Otherwise, return the value of the last
command executed, or a zero exit status if no command is executed.
CONSEQUENCES OF ERRORS
Default.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
cat foobar
foo=hello bar=world
. ./foobar
echo $foo $bar
hello world
RATIONALE
Some older implementations searched the current directory for the file, even if the value
of PATH disallowed it. This behavior was omitted from this volume of POSIX.1‐2008 due to
concerns about introducing the susceptibility to trojan horses that the user might be
trying to avoid by leaving dot out of PATH.
The KornShell version of dot takes optional arguments that are set to the positional
parameters. This is a valid extension that allows a dot script to behave identically to a
function.
FUTURE DIRECTIONS
None.
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