03-28-2013
Piping commands
Hi
I am tryin to undertand piping
command1|command2
from what i learn output of cammand 2 is an intput for command 1 right?
If so .
What dose next sequence do
cat f1 >> f2 | grep '^[A-Da-F]'
I think it takes context of f1 and Concatenate's it to f2 and then looks for ....i don't know..
Thx.
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LEARN ABOUT DEBIAN
dose-challenged
CHALLENGED(1) DOSE Tools CHALLENGED(1)
NAME
dose-challenged - detect broken packages due to obsolete dependencies
SYNOPSIS
dose-challenged [options] Packages file(s)
DESCRIPTION
dose-challenged performs a speculative analysis of the repository to identify those packages that, if upgraded to a specific version, would
break a large number of other packages in the repository. This tool would be particularly useful during the upgrade of a specific component
to evaluate its impact on the software archive.
Input Specification
The input of dose-challenged is a list of Debian Packages files
Output Specification
The output of dose-challenged is in the yaml format.
Options
-b --broken
Print the list of broken packages
-d --downgrade
Check package downgrades
-c Print the list of packages in a cluster
--checkonly
Select a subset of packages to check. By default all packages are checked.
-v Enable info / warnings / debug messages. This option may be repeated up to three times in order to increase verbosity.
--progress
Enable progress bars.
-h, --help
Display this list of options.
EXAMPLE
dose-challenged -v --progress Packages.bz2 > result.yaml
NOTE
AUTHOR
Pietro Abate and Roberto Di Cosmo
SEE ALSO
dose-distcheck(1) dose-outdated(1)
<http://www.mancoosi.org> is the home page of the Mancoosi project.
dose3 3.0.2 2012-10-03 CHALLENGED(1)