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Top Forums Shell Programming and Scripting How to Force command substitution evaluation in bash? Post 302969879 by siegfried on Tuesday 29th of March 2016 01:56:05 PM
Old 03-29-2016
Yes! As I you inferred: $(BackupRecords --log) very similar to $(date +'%Y %b %d %H:%M:%ss'). If I call it too often, I get different log files (which is usually what I want).

However, in this case, I want the same log file for multiple uses within the same script. How can I evaluate $(BackupRecords --log) only once at the beginning of my script once and use it multiple times later in the script?

Thanks
Siegfried
 

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SCANLOGS(8)						      System Manager's Manual						       SCANLOGS(8)

NAME
scanlogs - summarize INN log files. SYNOPSIS
scanlogs [ norotate ] [ nonn ] DESCRIPTION
Scanlogs summarizes the information recorded in the INN log files (see newslog(5)). By default, it also rotates and cleans out the logs. It is normally invoked by the news.daily(8) script. KEYWORDS
The following keywords are accepted: norotate Using this keyword disables the rotating and cleaning aspect of the log processing: the logs files are only scanned for information and no contents are altered. nonn Normally the nn log file is scanned and rotated. Using this keyword disables this function. If scanlogs is invoked more than once a day, the ``norotate'' keyword should be used to prevent premature log cleaning. HISTORY
Written by Landon Curt Noll <chongo@toad.com> and Rich $alz <rsalz@uunet.uu.net> for InterNetNews. This is revision 1.1, dated 1996/10/29. SEE ALSO
innd(8) newslog(5), news.daily(8), nnrpd(8). SCANLOGS(8)
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