On Thu, 4 Feb 2010 17:09:28 -0500 (EST), Dotan Cohen wrote: > I'm scripting a backup solution, the line that does the business looks > like this: > > tar -zcvf - * --exclude-from $EXCLUDES | openssl des3 -salt -k $1 | > dd of=$(hostname)-$(date +%Y%m%d).tbz > > Because of the "v" flag tar writes to stdout the name of each file > copied. How can I get that output redirected to a variable, to use > later in the script?
First of all, let me preface my remarks by saying that I am just learning shell scripting myself and definitely consider myself a novice. Some guru out there may (and probably does) know a better way. Using a variable is problematic, since a pipeline runs in a subshell environment. In fact, each stage of the pipeline is a separate process. Thus, any variables set in a pipeline stage do not affect the values of the corresponding variable names in the shell environment that invoked the pipeline. How about something like this? tar -zcvf - * --exclude-from $EXCLUDES | tee /tmp/data$$ | \ openssl ... . . logic to process the /tmp/data$$ data file . rm /tmp/data$$ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
