[TriLUG] Bash Symbolic Link Traversal Question

[Joseph Mack NA3T]

On Thu, 5 Jul 2012, Ken Mink wrote:

> Hey Folks,
>   I've been doing a lot of googling on this problem and can't seem to find a 
> bash setting to make me happy.
> I do the following:
> mkdir /tmp/dir1
> mkdir /tmp/dir2
> echo "Testing 1 2 3" > /tmp/dir1/test
> ln -s /tmp/dir2 /tmp/dir1/dir2
> cd /tmp/dir1/dir2
> cat ../test

Yes you're in two places with a link. Possibly a step 
forward

tpx60:/tmp/dir1/dir2# pwd -L
/tmp/dir1/dir2
tpx60:/tmp/dir1/dir2# pwd -P
/tmp/dir2
tpx60:/tmp/dir1/dir2# dirname $(pwd -P)
/tmp
tpx60:/tmp/dir1/dir2# dirname $(pwd -L)
/tmp/dir1
tpx60:/tmp/dir1/dir2# cat $(dirname $(pwd -L))/test
Testing 1 2 3

Joe


-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
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