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Top Forums Shell Programming and Scripting Pipes with the < and >> meanings. Post 302516995 by sso on Monday 25th of April 2011 06:49:35 PM
Old 04-25-2011
Pipes with the < and >> meanings.

Hey,

Well, we're starting scripting next week for my class, and I have my command done, but I don't actually understand what the meaning is, so I was just wondering if someone could "translate" this in to words so that I might be able to do this better...

Quote:
c1 | c2 | c3 < inputInfo.txt >> outputCollection.txt


command1 | command2 | command3 etc.

But yeah...

Also, the command I have now, I was wondering if their is a way to get the output of the pips to work on 2 commands rather than just one...

Like, if I had ps -A | grep [numbers] | then have this pipe to both, wc and sort, so I can get the total amount of processes and have it sorted...

Sorry for multi-questioning, I really only care about the translation though,

Thanks so much!
 

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DH_PYTHON3(1)							   User Commands						     DH_PYTHON3(1)

NAME
dh_python3 - calculates Python 3 dependencies, adds maintainer scripts to byte compile files, etc. SYNOPSIS
dh_python3 -p PACKAGE [-V [X.Y][-][A.B]] DIR_OR_FILE [-X REGEXPR] OPTIONS
--version show program's version number and exit -h, --help show this help message and exit --no-guessing-deps disable guessing dependencies --no-dbg-cleaning do not remove any files from debug packages --skip-private don't check private directories -v, --verbose turn verbose mode on -i, --indep act on architecture independent packages -a, --arch act on architecture dependent packages -q, --quiet be quiet -p PACKAGE, --package=PACKAGE act on the package named PACKAGE -N NO_PACKAGE, --no-package=NO_PACKAGE do not act on the specified package -V VRANGE specify list of supported Python versions. See py3compile(1) for examples -X REGEXPR, --exclude=REGEXPR exclude items that match given REGEXPR. You may use this option multiple times to build up a list of things to exclude. --compile-all compile all files from given private directory in postinst/rtupdate not just the ones provided by the package (i.e. do not pass the --package parameter to py3compile/py3clean) --depends=DEPENDS translate given requirements into Debian dependencies and add them to ${python:Depends}. Use it for missing items in requires.txt. --recommends=RECOMMENDS translate given requirements into Debian dependencies and add them to ${python:Recommends} --suggests=SUGGESTS translate given requirements into Debian dependencies and add them to ${python:Suggests} SEE ALSO
/usr/share/doc/python3-doc/README.PyDist (python3-doc package) dh_python3 3.0~beta2 September 2010 DH_PYTHON3(1)
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