06-03-2009
All output at console and in a file at same time ?
I have several backup scripts I am improving which involves mksysb, savevg and tar.
Is there a way to have the output of any command sent to the standard output as usual (terminal) and at the same time, send a copy of it all into a file ? Normal outputs and error outputs.
Even if I am checking the status of the backup process, I know my client. They will ask that I display on the terminal the output of the backup so they see it running. But if there is a problem, scrolling the window all the way back to the start of the backup will not be possible (too much output). So if I can send all the output to a file, I could either do a grep from it to spot the error or let the operator view the file to find the errors himself (media error, ...).
added comments...
I saw similar posts done. I am checking them out...
Forgot to mention I am on AIX 4.2 with Korn shell
added comments ...
testing it with TAR
tar cvfpdl /dev/rmt0 . 2>&1 | tee -a /tmp/test.log
it only displays and copies the warnings/errors
tar cvfpdl /dev/rmt0 . | tee -a /tmp/test.log
does the same thing. I need the whole thing on console and in a file.
will continue to check other threads... (by the way, after each backup actions, I am checking the $? status for status and do actions accordingly).
Last edited by Browser_ice; 06-03-2009 at 11:32 PM..
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LEARN ABOUT OPENDARWIN
logsave
LOGSAVE(8) System Manager's Manual LOGSAVE(8)
NAME
logsave - save the output of a command in a logfile
SYNOPSIS
logsave [ -asv ] logfile cmd_prog [ ... ]
DESCRIPTION
The logsave program will execute cmd_prog with the specified argument(s), and save a copy of its output to logfile. If the containing
directory for logfile does not exist, logsave will accumulate the output in memory until it can be written out. A copy of the output will
also be written to standard output.
If cmd_prog is a single hyphen ('-'), then instead of executing a program, logsave will take its input from standard input and save it in
logfile
logsave is useful for saving the output of initial boot scripts until the /var partition is mounted, so the output can be written to
/var/log.
OPTIONS
-a This option will cause the output to be appended to logfile, instead of replacing its current contents.
-s This option will cause logsave to skip writing to the log file text which is bracketed with a control-A (ASCII 001 or Start of
Header) and control-B (ASCII 002 or Start of Text). This allows progress bar information to be visible to the user on the console,
while not being written to the log file.
-v This option will make logsave to be more verbose in its output to the user.
AUTHOR
Theodore Ts'o (tytso@mit.edu)
SEE ALSO
fsck(8)
E2fsprogs version 1.44.1 March 2018 LOGSAVE(8)