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breakposix - Online in the Cloud

Run breakposix in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command breakposix 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


break — exit from for, while, or until loop

SYNOPSIS


break [n]

DESCRIPTION


The break utility shall exit from the smallest enclosing for, while, or until loop, if
any; or from the nth enclosing loop if n is specified. The value of n is an unsigned
decimal integer greater than or equal to 1. The default shall be equivalent to n=1. If n
is greater than the number of enclosing loops, the outermost enclosing loop shall be
exited. Execution shall continue with the command immediately following the loop.

OPTIONS


None.

OPERANDS


See the DESCRIPTION.

STDIN


Not used.

INPUT FILES


None.

ENVIRONMENT VARIABLES


None.

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


0 Successful completion.

>0 The n value was not an unsigned decimal integer greater than or equal to 1.

CONSEQUENCES OF ERRORS


Default.

The following sections are informative.

APPLICATION USAGE


None.

EXAMPLES


for i in *
do
if test −d "$i"
then break
fi
done

RATIONALE


In early proposals, consideration was given to expanding the syntax of break and continue
to refer to a label associated with the appropriate loop as a preferable alternative to
the n method. However, this volume of POSIX.1‐2008 does reserve the name space of command
names ending with a <colon>. It is anticipated that a future implementation could take
advantage of this and provide something like:

outofloop: for i in a b c d e
do
for j in 0 1 2 3 4 5 6 7 8 9
do
if test −r "${i}${j}"
then break outofloop
fi
done
done

and that this might be standardized after implementation experience is achieved.

FUTURE DIRECTIONS


None.

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