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Full Discussion: ksh Logging
Top Forums UNIX for Beginners Questions & Answers ksh Logging Post 303032621 by RudiC on Thursday 21st of March 2019 04:48:57 AM
Old 03-21-2019
I was thinking about going through your commands one step after the other, assuming both stdout and stderr point to /dev/tty originally. But then I found this is completely covered in man bash:
Quote:
Note that the order of redirections is significant. For example, the command

ls > dirlist 2>&1

directs both standard output and standard error to the file dirlist, while the command

ls 2>&1 > dirlist

directs only the standard output to file dirlist, because the standard error was duplicated from the standard output before the standard output was redirected to dirlist.
Do you see the parallel / analogy?
 

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POD2USAGE(1)						 Perl Programmers Reference Guide					      POD2USAGE(1)

NAME
pod2usage - print usage messages from embedded pod docs in files SYNOPSIS
pod2usage [-help] [-man] [-exit exitval] [-output outfile] [-verbose level] [-pathlist dirlist] file OPTIONS AND ARGUMENTS
-help Print a brief help message and exit. -man Print this command's manual page and exit. -exit exitval The exit status value to return. -output outfile The output file to print to. If the special names "-" or ">&1" or ">&STDOUT" are used then standard output is used. If ">&2" or ">&STDERR" is used then standard error is used. -verbose level The desired level of verbosity to use: 1 : print SYNOPSIS only 2 : print SYNOPSIS sections and any OPTIONS/ARGUMENTS sections 3 : print the entire manpage (similar to running pod2text) -pathlist dirlist Specifies one or more directories to search for the input file if it was not supplied with an absolute path. Each directory path in the given list should be separated by a ':' on Unix (';' on MSWin32 and DOS). file The pathname of a file containing pod documentation to be output in usage mesage format (defaults to standard input). DESCRIPTION
pod2usage will read the given input file looking for pod documentation and will print the corresponding usage message. If no input file is specifed than standard input is read. pod2usage invokes the pod2usage() function in the Pod::Usage module. Please see "pod2usage()" in Pod::Usage. SEE ALSO
Pod::Usage, pod2text(1) AUTHOR
Brad Appleton <bradapp@enteract.com> Based on code for pod2text(1) written by Tom Christiansen <tchrist@mox.perl.com> perl v5.8.0 2003-02-18 POD2USAGE(1)
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