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changing and restore working directory in bash

Posted on 2014-03-04
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1,920 Views
Last Modified: 2014-03-04
curr_dir=`pwd`
cd $dir
##
##  Do some processing
##
cd $curr_dir


Is this inefficient way of restoring directory in bash script or is there some other standard way?
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Question by:perlperl
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3 Comments
 
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Accepted Solution

by:
woolmilkporc earned 200 total points
ID: 39904888
The variable OLDPWD is filled automatically, so no need for "curr_dir=`pwd`"

cd $dir
##
##  Do some processing
##
cd $OLDPWD

"cd -" will do exactly the same as "cd $OLDPWD && pwd", i.e. it return to the previous working directory and if successful print out its name.

If your shell is "bash" please see also the "pushd", "popd" and "dirs" builtin commands (consult the manpage for "bashbuiltins").
0
 

Author Comment

by:perlperl
ID: 39904967
Interesting i will try cd$OLDPWD and cd -  both

Thanks
0
 

Author Closing Comment

by:perlperl
ID: 39905208
Thanks,
cd - worked. no need to save unnecessary working dir first
0

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