19 lines
744 B
Text
19 lines
744 B
Text
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pipestatus - source file for POSIX shell that allows
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to obtain an exit status of every program in a pipe.
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MOTIVATION
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When we program in shell we often run pipes like this
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prog1 args1 | prog2 args2 | ... | progN argsN
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POSIX says that exit status of pipe is the exit status of LAST program
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in it, i.e. progN in our example. That is, exit status of all other
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programs in pipe is silently ignored. But in many situations exit
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status of all programs in pipe should be checked to make program
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robust. Some shells like BASH and ZSH have special extensions for
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doing this but POSIX shell unfortunately doesn't provide an EASY way
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for doing this.
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In order to solve the problem, described above pipestatus was written.
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