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Last modification : 2013/01/26 19:16
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'''exec''' is the internal command to redirect the standard input and output stream from or to a file. * '''Standard output stream''' To redirect standard output use '--->---' parameter. Beware, in interactive mode even the prompt is sent to new standard output. In the example below try to type '---print 123---' and '---exec >---' just after the redirection.{msh> exec >1.txt msh> cat 1.txt 123}The simple '---exec >---' command switch the standard output back to his initial state (i.e. the screen). To add the output to an existing file (and not replacing it) use '---exec >>---'.{msh> exec >>1.txt msh> cat 1.txt 123 456} * '''Error output stream''' The syntax is exactly the same for the error stream, but with the '---2>---' parameter.{msh> exec 2>2.txt msh> exec 2>>3.txt msh> exec 2>} * '''Standard input stream''' '---exec <---' is used to redefine the standard input stream.
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