Ken Teague wrote:
On Thu, Feb 4, 2010 at 2:09 PM, Dotan Cohen <dotanco...@gmail.com> 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)-$(date +%Y%m%d).tbz
Because of the "v" flag tar writes to stdout the name of each file
copied. How can I get that output redirected to a variable, to use
later in the script?
You probably want to put the data into an array rather than a
variable. An explanation of how to do so can be found here:
http://tldp.org/LDP/abs/html/arrays.html
Scroll down to the end of Example 26-7 (just about Example 26-8).
Basically, direct stdout to a file, then cat the file to add it to an
array.
<snip>
The array=( element1 element2 ... elementN ) initialization
operation, with the help of command substitution, makes it possible to
load the contents of a text file into an array.
#!/bin/bash
filename=sample_file
# cat sample_file
#
# 1 a b c
# 2 d e fg
declare -a array1
array1=( `cat "$filename"`) # Loads contents
# List file to stdout #+ of $filename into array1.
#
# array1=( `cat "$filename" | tr '\n' ' '`)
# change linefeeds in file to spaces.
# Not necessary because Bash does word splitting,
#+ changing linefeeds to spaces.
echo ${arra...@]} # List the array.
# 1 a b c 2 d e fg
#
# Each whitespace-separated "word" in the file
#+ has been assigned to an element of the array.
element_count=${#array1[*]}
echo $element_count # 8
<snip>
Why not simply use the t option for content listing :
tar tvf * --exclude-from $EXCLUDES
Bruno
--
To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
