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Shell Programming and Scripting
Problem with cat
Post 302566854 by linuxn00b on Friday 21st of October 2011 09:56:17 AM
10-21-2011
Thanks for your help Corona. I have a tendency to make things harder then they need to be. I did not know about the "$#" that is very useful. Thanks again for your help. 
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LEARN ABOUT REDHAT
shred
SHRED(1) FSF SHRED(1) NAME
shred - delete a file securely, first overwriting it to hide its contents SYNOPSIS
shred [OPTIONS] FILE [...] DESCRIPTION
Overwrite the specified FILE(s) repeatedly, in order to make it harder for even very expensive hardware probing to recover the data. Mandatory arguments to long options are mandatory for short options too. -f, --force change permissions to allow writing if necessary -n, --iterations=N Overwrite N times instead of the default (25) -s, --size=N shred this many bytes (suffixes like K, M, G accepted) -u, --remove truncate and remove file after overwriting -v, --verbose show progress -x, --exact do not round file sizes up to the next full block -z, --zero add a final overwrite with zeros to hide shredding - shred standard output --help display this help and exit --version output version information and exit Delete FILE(s) if --remove (-u) is specified. The default is not to remove the files because it is common to operate on device files like /dev/hda, and those files usually should not be removed. When operating on regular files, most people use the --remove option. CAUTION: Note that shred relies on a very important assumption: that the filesystem overwrites data in place. This is the traditional way to do things, but many modern filesystem designs do not satisfy this assumption. The following are examples of filesystems on which shred is not effective: * log-structured or journaled filesystems, such as those supplied with AIX and Solaris (and JFS, ReiserFS, XFS, Ext3, etc.) * filesystems that write redundant data and carry on even if some writes fail, such as RAID-based filesystems * filesystems that make snapshots, such as Network Appliance's NFS server * filesystems that cache in temporary locations, such as NFS version 3 clients * compressed filesystems In addition, file system backups and remote mirrors may contain copies of the file that cannot be removed, and that will allow a shredded file to be recovered later. AUTHOR
Written by Colin Plumb. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
The full documentation for shred is maintained as a Texinfo manual. If the info and shred programs are properly installed at your site, the command info shred should give you access to the complete manual. shred (coreutils) 4.5.3 February 2003 SHRED(1)