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Full Discussion: Issues with setting Aliases
Top Forums Shell Programming and Scripting Issues with setting Aliases Post 302966157 by mohtashims on Monday 8th of February 2016 11:29:34 PM
Old 02-09-2016
Hammer & Screwdriver
Quote:
Originally Posted by Don Cragun
No. And, there is no logical reason to want to do so.

Why do you think it is important to override a user not wanting the output produced by -i when that user explicitly asks for the behavior afforded by -f?

If this is for an alias you are defining for your own use, why does it matter? Just don't type -f when you use the alias if you don't want to use -f! If this is an alias you are creating for others to use, DO NOT ATTEMPT to thwart a user's attempt to get the behavior they need for the job they are doing.
@Cragun: We have naive users who are given access to our servers. They do not understand the significance of -f option and due to overlook they may specify a folder instead of a file becoz they overlooked the space charecter in the path to the file making it a folder path.

rm -irf /tmp/hello /output/bob.txt

This will accidentally delete the folder "hello" instead of the file "bob.txt" as they copy paste these path from word documents or emails.

So if i can impose the -i option for others as we use the same id they will be prompted and thus they can correct their mistake rather than the -f option doing the damage.

Your suggestions please... to my concern ?

Also, i was wondering where the same behavior of a later flag over riding the behavior of the previous flag could be tested.

I tried grep "Sunday" -wi hello.txt and grep "Sunday" -iw hello.txt but i get the same output where as grep "Sunday" -w hello.txt and grep "Sunday" -i hello.txt yields different results.

Can you tell me other commands and the flags that override each others behavior like the -i and -f flag over rides each other in case of rm command.
Last edited by mohtashims; 02-09-2016 at 12:46 AM..
 

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LEARN ABOUT DEBIAN

rmf

RMF(1)								     [nmh-1.5]								    RMF(1)

NAME

       rmf - remove an nmh folder

SYNOPSIS

       rmf [+folder] [-interactive | -nointeractive] [-version] [-help]

DESCRIPTION

       Rmf removes all of the messages (files) within the specified (or default) folder, and then removes the folder (directory) itself.

       If  there  are  any  files  within the folder which are not a part of nmh, they will not be removed, and an error will be produced.  If the
       folder is given explicitly or the -nointeractive option is given, then the folder will be removed  without  confirmation.   Otherwise,  the
       user  will be asked for confirmation.  If rmf can't find the current folder, for some reason, the folder to be removed defaults to `+inbox'
       (unless overridden by user's profile entry "Inbox") with confirmation.

       If the folder being removed is a subfolder, the parent folder will become the new current folder, and rmf will produce  a  message  telling
       the user this has happened.  This provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list
       and returning to the current folder from which the list was extracted.

       If rmf s used on a read-only folder, it will delete all the (private) sequences (i.e., "atr-seq-folder" entries) for this folder from  your
       context without affecting the folder itself.

       Rmf irreversibly deletes messages that don't have other links, so use it with caution.

FILES

       $HOME/.mh_profile	  The user profile

PROFILE COMPONENTS

       Path:		    To determine the user's nmh directory
       Current-Folder:	    To find the default current folder
       Inbox:		    To find the default inbox

SEE ALSO

       rmm(1)

DEFAULTS

       `+folder' defaults to the current folder, usually with confirmation
       `-interactive' if +folder' not given, `-nointeractive' otherwise

CONTEXT

       Rmf  will  set the current folder to the parent folder if a subfolder is removed; or if the current folder is removed, it will make "inbox"
       current.  Otherwise, it doesn't change the current folder or message.

BUGS

       Although intuitively one would suspect that rmf works recursively, it does not.	Hence if you have a sub-folder within a folder,  in  order
       to rmf the parent, you must first rmf each of the children.

MH.6.8								   11 June 2012 							    RMF(1)
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