Substitute a character with sed Post: 303032480

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Top Forums UNIX for Beginners Questions & Answers Substitute a character with sed Post 303032480 by stomp on Tuesday 19th of March 2019 05:55:37 AM

03-19-2019

Registered User

Thanks all for the participation.

I hope I did not make my statements in the way they are the truth, but just did show them as my own preferences(e. g. the statement that "Shell scripting is now programming language") . Others may have other preferences. (@Bakunin: I'm sure you have a great script library of portable scripts he can use when he needs them in any environment).

In overall my views have not changed. Portability may be an important goal in writing scripts. But one does not get it for free. And it's not cheap, because it impacts other objectives one might have in programming, which may be...

Ease of programming
Efficiency of Resources
Security
Robustness
Maintainability/Readability
Slim Programming Runtime Environment

But one can do easy things to keep portability and need not to break it lightly (Using BRE instead of ERE,...).

Despite being a bit interested in standardization, I was only reading news about that topic here and there. Thanks for the details Don. I gave up on that 20 years ago. Linux is absolutely great in terms of standardization like every distribution has it's own standard. (See xkcd: Standards). Just kidding. The linux folks are not even able to get together in which file the hostname of the system should reside. In the end the decision was made by using systemd which had it at the fixed location /etc/hostname.

In all my time it has never come to a common way e. g. to configure persistent networking. There are about 50 different ways to do it.

Quote:

Originally Posted by jim mcnamara

Speaking strictly as a scientist: python ruby, and julia are extremely important for research and analysis.

I do not know that. But I assume, you know what you are speaking of. The question for me is, what is needed as a runtime which is needed as a base - as a compatibility layer. I think it's not that good to have 100 GB of every possible and well working programming language installed in every system. I would rather like to have that base not too fat.

Last edited by stomp; 03-21-2019 at 01:50 PM..

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LEARN ABOUT DEBIAN

nwbpset

NWBPSET(1)							      nwbpset								NWBPSET(1)

NAME

       nwbpset - Create a bindery property or set its value

SYNOPSIS

       nwbpset [ -h ] [ -S server ] [ -U user name ] [ -P password | -n ] [ -C ]

DESCRIPTION

       nwbpset Reads a property specification from the standard input and creates and sets the corresponding property. The format is determined by
       the output of 'nwbpvalues -c'. nwbpset will hopefully become an important part of the bindery management  suite	of  ncpfs,  together  with
       'nwbpvalues -c'. See util/nwbpsecurity for an example.

       As another example, look at the following command line:

	 nwbpvalues -t 1 -o supervisor -p user_defaults -c |
	 sed '2s/.*/ME/'|
	 sed '3s/.*/LOGIN_CONTROL/'|
	 nwbpset

       With  this command, the property user_defaults of the user object 'supervisor' is copied into the property login_control of the user object
       'me'.

	 nwbpvalues -t 1 -o me -p login_control -c |
	 sed '9s/.*/ff/'|
	 nwbpset

       This command disables the user object me.

       Feel free to contribute other examples!

       nwbpset looks up the file $HOME/.nwclient to find a file server, a user name and possibly a password. See nwclient(5) for more information.
       Please note that the access permissions of $HOME/.nwclient MUST be 600 for security reasons.

OPTIONS

       -h
	  -h is used to print out a short help text.

       -S server
	  server is the name of the server you want to use.

       -U user
	  user is the user name to use for login.

       -P password
	  password  is	the  password to use for login. If neither -n nor -P are given, and the user has no open connection to the server, nwbpset
	  prompts for a password.

       -n
	  -n should be given if no password is required for the login.

       -C
	  By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off
	  this conversion by -C.

AUTHORS

       nwbpset was written by Volker Lendecke. See the Changes file of ncpfs for other contributors.

nwbpset 							     8/7/1996								NWBPSET(1)