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Harm Geerts posted <200511022259.51970.harmgeerts@××××.nl>, excerpted |
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below, on Wed, 02 Nov 2005 22:59:51 +0100: |
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> On Wednesday 02 November 2005 21:54, Duncan wrote: |
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>> Hmm... That --noreplace is a new one on me. I normally simply |
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>> |
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>> echo <category/pkg> >> /var/lib/portage/world |
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>> |
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>> Newer versions of portage (don't believe it's in stable portage yet) even |
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>> have an emaint command that removes the bad lines for you. |
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> |
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> So did I, but now the warning `emerge depclean` produces tells me I can use |
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> this. I find this rather nice as it is a lot safer and keeps the world file |
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> free from user errors. For example replacing >> with > would be the most |
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> destructive user error :P |
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> I have portage 2.0.53_rc7 installed and I'm not sure which version introduced |
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> --noreplace so it might not be available for everyone yet. |
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I'm still on rc6, so I guess I need to sync and emerge -uD world. |
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However, it's probably in rc6 too, only I didn't notice it in the warning |
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(<sheepish> as I don't read it as I know what the warning is about... only |
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they added something! </sheepish>). |
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Not here, forgetting the second > in >> wouldn't be destructive! I think |
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this hint was featured in GWN a while back (yes, it was, comments are good |
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things! =8^): |
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-- snip -- |
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# Based on a tips & tricks GWN feature. |
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# Makes redirection to an existing file an error. |
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# Use >> instead of > to append, or >| if overwriting is desired. |
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set -o noclobber |
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|
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-- snip -- |
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Put that in your .bashrc or whatever (my /etc/profile and .bashrc and all |
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that are rather seriously customized, here, it's a file called |
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noclobber.sh in /etc/profile.d/, but my bashrcs and profiles source |
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everything in /etc/profile.d/ so it's added to them). |
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That way, using > to redirect to an existing file produces an error saying |
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it already exists. The comment gives the solution, use >> to append, or |
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use >| to force-overwrite the file. |
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So... "echo whatever > /var/lib/portage/world" would NOT "be the end of my |
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world" here! (double entendre/entente) |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman in |
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http://www.linuxdevcenter.com/pub/a/linux/2004/12/22/rms_interview.html |
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-- |
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