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Operating Systems
Linux
Ubuntu
dd cloning of whole disk
Post 302691915 by Royalist on Sunday 26th of August 2012 12:57:11 PM
08-26-2012
ddrescue explained
Lem my sincere thanks. It had occurred to me last night, that dropping the -g would probably solve my particular problem, having read your earlier post.
It must be difficult writing a manual to suit all levels of users, but I have re-read again, some of it and can see no way that it explains all that I needed to know and that you have explained so well. By a process of trial and error, if prepared to spend copious amounts of time, I would probably have made it do what I needed, but I also need to understand all the implications of the use and the full capabilities of ddrescue.
In the manual for example there are several example command lines or functions having multiple lines. I still don't understand whether these are supposed to called individually (i.e. one at a time), or may be called simultaneously by the use of shift + return keys at each line end and executed with a final return key?
Nowhere, is there an explanation of how to state the path for the log file and surely only advanced users would know where it should be filed?
I haven't been using Ubuntu for a full year yet and at the age of 75, maybe I don't pick things up as readily as youngsters, but I am putting a lot of effort into mastering it all.
Your comments have been most helpful, you have clearly devoted considerable time to helping out.
If you find the time to answer my final queries, it will be great. Many thanks. ---> look no wall!
Roy
It must be difficult writing a manual to suit all levels of users, but I have re-read again, some of it and can see no way that it explains all that I needed to know and that you have explained so well. By a process of trial and error, if prepared to spend copious amounts of time, I would probably have made it do what I needed, but I also need to understand all the implications of the use and the full capabilities of ddrescue.
In the manual for example there are several example command lines or functions having multiple lines. I still don't understand whether these are supposed to called individually (i.e. one at a time), or may be called simultaneously by the use of shift + return keys at each line end and executed with a final return key?
Nowhere, is there an explanation of how to state the path for the log file and surely only advanced users would know where it should be filed?
I haven't been using Ubuntu for a full year yet and at the age of 75, maybe I don't pick things up as readily as youngsters, but I am putting a lot of effort into mastering it all.
Your comments have been most helpful, you have clearly devoted considerable time to helping out.
If you find the time to answer my final queries, it will be great. Many thanks. ---> look no wall!
Roy
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LEARN ABOUT MINIX
wall
WALL(1) User Commands WALL(1) NAME
wall - write a message to all users SYNOPSIS
wall [-n] [-t timeout] [-g group] [message | file] DESCRIPTION
wall displays a message, or the contents of a file, or otherwise its standard input, on the terminals of all currently logged in users. The command will wrap lines that are longer than 79 characters. Short lines are whitespace padded to have 79 characters. The command will always put a carriage return and new line at the end of each line. Only the superuser can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies messages. Reading from a file is refused when the invoker is not superuser and the program is set-user-ID or set-group-ID. OPTIONS
-n, --nobanner Suppress the banner. -t, --timeout timeout Abandon the write attempt to the terminals after timeout seconds. This timeout must be a positive integer. The default value is 300 seconds, which is a legacy from the time when people ran terminals over modem lines. -g, --group group Limit printing message to members of group defined as a group argument. The argument can be group name or GID. -V, --version Display version information and exit. -h, --help Display help text and exit. NOTES
Some sessions, such as wdm, that have in the beginning of utmp(5) ut_type data a ':' character will not get the message from wall. This is done to avoid write errors. SEE ALSO
mesg(1), talk(1), write(1), shutdown(8) HISTORY
A wall command appeared in Version 7 AT&T UNIX. AVAILABILITY
The wall command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util- linux/>. util-linux August 2013 WALL(1)