Dr. Dobb's is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.


Channels ▼
RSS

A Flexible System for Centralized Backup


Listing 2 sender-full

#! /bin/sh
# sender-full - send compressed backup to ssh for remote sshbkp-receiver
# Copyright (C) 2001 Ed Cashin
#

# -------------- put your email address here
[email protected]
me=sender-full
host=`hostname | sed 's/\..*//'`
# -------------- replace "meili" with the hostname of the machine
#                where sshbkp-receiver will run.
rhost=meili
key=/root/.ssh/sender

# ---------- print a mail header to make it easy to mail this 
#            script's output with
#            "sender-full | /usr/lib/sendmail -t"
# 
cat <<EOF
To: $backuplackey
Subject: $host $me

EOF

# ----------- save a copy of the standard output in file descriptor six
exec 6>&1

echo ' ------------' $0  
echo ' ------------ starting backup on' `date`
echo ' ------------ storage host:' $rhost

# ----------------- these lines are from df -k output for convenience,
#                   and the a b c d variables are dummies.
# 
while read dev a b c d mountpt; do 
  echo ' ------------ backing up device:' $dev   mount point: $mountpt
  # ------- name this backup after the mount point,
  #         turning slashes to underscores, and removing the initial 
  #         slash.
  #
  fs=`echo $mountpt | sed -e 's/^\///' -e 's/\//_/g'`
  if [ "$fs" = "" ]; then
    fs=root
  fi
  title=${host}dump-$fs
  # ----------- send readable output to file descriptor six, where we
  #             copied the standard output, since we're piping the dump 
  #             to ssh on standard output
  #
  (echo $title; ufsdump 0fu - $dev) 2>&6 \
    | ssh -T -o "IdentityFile2 $key" $rhost || { 
    echo $me: Error: ufsdump $dev failed 1>&2
    exit 1
  }
  # ---------- for convenience, we feed the loop with a "here document" 
  #            that contains lines from the output of "df -k"
  #
done << EOF
/dev/sda1                54416      6677     44930  13% /boot
EOF

echo ' ------------ finishing backup on ' `date`


Related Reading


More Insights






Currently we allow the following HTML tags in comments:

Single tags

These tags can be used alone and don't need an ending tag.

<br> Defines a single line break

<hr> Defines a horizontal line

Matching tags

These require an ending tag - e.g. <i>italic text</i>

<a> Defines an anchor

<b> Defines bold text

<big> Defines big text

<blockquote> Defines a long quotation

<caption> Defines a table caption

<cite> Defines a citation

<code> Defines computer code text

<em> Defines emphasized text

<fieldset> Defines a border around elements in a form

<h1> This is heading 1

<h2> This is heading 2

<h3> This is heading 3

<h4> This is heading 4

<h5> This is heading 5

<h6> This is heading 6

<i> Defines italic text

<p> Defines a paragraph

<pre> Defines preformatted text

<q> Defines a short quotation

<samp> Defines sample computer code text

<small> Defines small text

<span> Defines a section in a document

<s> Defines strikethrough text

<strike> Defines strikethrough text

<strong> Defines strong text

<sub> Defines subscripted text

<sup> Defines superscripted text

<u> Defines underlined text

Dr. Dobb's encourages readers to engage in spirited, healthy debate, including taking us to task. However, Dr. Dobb's moderates all comments posted to our site, and reserves the right to modify or remove any content that it determines to be derogatory, offensive, inflammatory, vulgar, irrelevant/off-topic, racist or obvious marketing or spam. Dr. Dobb's further reserves the right to disable the profile of any commenter participating in said activities.

 
Disqus Tips To upload an avatar photo, first complete your Disqus profile. | View the list of supported HTML tags you can use to style comments. | Please read our commenting policy.