05-07-2010
What are all those block-characters in the print statement?
Instead of clearing the screen every time, try printing a carriage return instead of a newline. It will overwrite the last busy line with the next one.
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file:
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Dear Concern,
We have observed that following command stuck/does not work in some RedHat nodes. Please advise us to troubleshoot the issue.
/usr/sbin/hpacucli ctrl all show
Note: HP Array Configuration Utility CLI for Linux 64-bit
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LEARN ABOUT DEBIAN
bup-newliner
bup-newliner(1) General Commands Manual bup-newliner(1)
NAME
bup-newliner - make sure progress messages don't overlap with output
SYNOPSIS
<any command> 2>&1 | bup newliner
DESCRIPTION
bup newliner is run automatically by bup. You shouldn't need it unless you're using it in some other program.
Progress messages emitted by bup (and some other tools) are of the form "Message ### content", that is, a status message containing a vari-
able-length number, followed by a carriage return character and no newline. If these messages are printed more than once, they overwrite
each other, so what the user sees is a single line with a continually-updating number.
This works fine until some other message is printed. For example, progress messages are usually printed to stderr, but other program mes-
sages might be printed to stdout. If those messages are shorter than the progress message line, the screen will be left with weird looking
artifacts as the two messages get mixed together.
bup newliner prints extra space characters at the right time to make sure that doesn't happen.
If you're running a program that has problems with these artifacts, you can usually fix them by piping its stdout and its stderr through
bup newliner.
BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown- bup-newliner(1)