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How to correctly add a path to PATH?

I installed "perf" on Linux. But I can only use it by specifying the path: ~/bin/perf

I checked path by using echo and I found /bin is there.

What else should I do?

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marked as duplicate by Gilles, Ulrich Dangel, Renan, jasonwryan, warl0ck Sep 7 '12 at 7:40

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2 Answers 2

up vote 4 down vote accepted

~/bin is not /bin. Add it to $PATH.

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but I got this, why? " `/home/paul/bin': not a valid identifier " –  Anders Lind Mar 8 '12 at 7:26
    
@AndersLind: get rid of the whitespace. It should be export PATH=foo:bar:baz, not export PATH = foo:bar:baz. Shells are sensitive to this sort of thing. –  Alexios Mar 8 '12 at 11:17
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You have to add ~/bin to $PATH. You can do it with this command :

export PATH="$PATH":~/bin

You can check your PATH variable with env :

env | grep  ^PATH=
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4  
Another way to check PATH variable is simply echo $PATH. –  jofel Mar 8 '12 at 8:32
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