05-27-2012
Unix script to create a backup on a remote computer
Hello, I have a problem - I attended a UNIX course a couple of years back but, unfortunately, I don't remember how to write scripts for shell commands. Now I want to make a script that makes a backup of a folder on a remote computer and I have no idea how to begin.
So the idea is that I want the script to create a series of archives of a target directory, each archive must be no larger than 2GB in size and files should be each put in only one archive (as opposed to half of the file in archive1 and the other half in archive2), do not worry there are no files bigger than 2GB
. For the transfer along the net I remember something about "ssh" and generated keys - to avoid password requst every time.
I also want the script to create a text file which indicates which file is in which archive or which archive contains which files, whichever.
Thank you!
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SHAR(1) BSD General Commands Manual SHAR(1)
NAME
shar -- create a shell archive of files
SYNOPSIS
shar file ...
DESCRIPTION
shar writes an sh(1) shell script to the standard output which will recreate the file hierarchy specified by the command line operands.
Directories will be recreated and must be specified before the files they contain (the find(1) utility does this correctly).
shar is normally used for distributing files by ftp(1) or mail(1).
EXAMPLES
To create a shell archive of the program ls(1) and mail it to Rick:
cd ls
shar `find . -print` | mail -s "ls source" rick
To recreate the program directory:
mkdir ls
cd ls
...
<delete header lines and examine mailed archive>
...
sh archive
SEE ALSO
compress(1), mail(1), tar(1), uuencode(1)
HISTORY
The shar command appeared in 4.4BSD.
BUGS
shar makes no provisions for special types of files or files containing magic characters.
SECURITY CONSIDERATIONS
It is easy to insert trojan horses into shar files. It is strongly recommended that all shell archive files be examined before running them
through sh(1). Archives produced using this implementation of shar may be easily examined with the command:
egrep -v '^[X#]' shar.file
BSD
June 6, 1993 BSD