System Notes Org

Here is a very simple way to backup and compress subdirectories. Normally you would want to copy them to a remote location in case something happens to the original drive, but in this case the concern is that disk space is filling up. Suppose you have a program that is generating log files every day, let's say they are key performance indicators (kpi) for some system that you are testing. The log files are pure text, but after a while, they take up a lot of space. One way to compress text is to use gzip, but since tar has an option (-z) to tar and gzip all at once, it may be one of the easiest solutions. #!/bin/sh # compress logs in /opt/multicast_kpi/record # by ScottM, 20080613 # Set variables TODAY = " `date +%m%d%Y` " ARCHIVE_DIR =/opt/multicast_kpi/record # move to working directory cd $ARCHIVE_DIR # For each subdirectory, make a .tgz file of it's contents, and then delete the originals. for dir in `ls -1 $ARCHIVE_DIR | grep -v " .tgz " | gre...

To copy all files from /usr/local/source to /usr/local/destination, there are several options. Tar cd /usr/local/source tar -cvf - . | (cd /usr/local /destination ; tar -xvf -) This method uses tar, but rather than create a file, it writes to a stream "-" in std output. The stream is piped to another tar command, after changing to another directory. cp -a cp -a /usr/local/src/* /usr/local/destination Other options: cpio dd