My intent is to learn UNIX and Linux to do basic level of UNIX....should know all commands, shell scripting, moving files within the same server or do to move (FTP ?) files from one server to another....albeit securely...SSH ?
I need to learn quickly for keeping getting job.
Progress So far:
1. VirtualBox Great tool but cannot make debian work on it... 2. Cannot find a free online server to practice and gain experience on what I want to do
haramkhor said: My intent is to learn UNIX and Linux to do basic level of UNIX....should know all commands, shell scripting, moving files within the same server or do to move (FTP ?) files from one server to another....albeit securely...SSH ?
for most basic level tasks file manipulation (moving files to different directories, copying files, being able to change text in a file) - mv, cp, cat, egrep, ls, chown, chmod, dos2unix, unix2dos, fold, dd, OD, ftp, sftp/ssh (you need to exchange keys to automate this in a script)
1. learn Unix/Linux Operating Systems and commands 2. Learn how to do shell scripting 3. Learn how to ftp files from one server to another server. (how to ftp files from one sever to two servers at the same time) 4. Learn how to ftp files from one server to another using SSH (How to do it in secure manner) 6. How to harden the servers (Thanks for tell me about Lowendbox...it does have a section on how to harden servers) 7. Setup Virtual server for myself, and two other buddies and start performing the tasks above
1) Take about 3 months to get good 2) I still don't have this one down. 3) You don't 'ftp' between servers, you rcp or scp between servers. 4) scp is the secure version of rcp. You will need to learn how to use RSA keys 6) I have no idea what this. 7) some of the larger boxes can fit in a virtual server.
perfectly fine to use rcp / scp. You should do an internet search to learn why you would use each and when would you use ftp/sftp instead or something else.
Here is an example sftp to a remote server with an automatic retry if it fails and it calls another script if it fails twice to send an email. Beforehand you have to have keys already sorted. I would recommend using batch mode if you go with sftp because it has built-in error checking.
you build the commands to actually send the file/etc. in $TMPDIR/sftp_commands.txt and then you call sftp in batch mode using that file to drive the transfer
disclaimer: I do batch scripts in ksh not bash.
example: $TMPDIR/sftp_commands.txt file put /WrkDir/userfiles/tmp/file_to_send replace ls -l
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