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The output from a command can be redirected to another command
with a pipe symbol (|) or to a file with a greater-than
symbol (>). There are options available in either
case:
e - redirect stderr instead of stdout
mpsh$ command --help |e more mpsh$ command >a data.out >e err.out Because of these options, whitespace is essential. The following will NOT be parsed as intended:
mpsh$ command >filename The whitespace before the filename is required:
mpsh$ command > filename
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