On Thursday 12 December 2002 09:23 am, Pablo Manalastas wrote:
> On Thu, 12 Dec 2002, digest_ wrote:
> > how do you list the directories in linux using ls?
> > `ls -d` returns '.'
i thought ls -d would be a great thing to remember (there are too
many options, and only a small number of slots in my brain to hold
them, so i'd have to kick some other option out of its slot ;). but
like you i noticed that it only gives me the current directory. on
my box it gives "./"
> ls -F | grep '/'
that works well. i also often do:
ls -l | grep ^d
if i want a long listing.
what do people do if they want to cut directory names out and some
directory names have spaces in them? often i want to traverse the
directories with a shell script, but using ls -l | grep ^d | cut -f 9 -d " "
doesn't work if there are spaces in the directory name. using the
ls -F | grep "/" would work too, but in bash scripts, the parts of
the directory name (e.g., "Program" and "Files" in "Program Files")
will get separated and i can't cd into "Program" or "Files" :).
i guess my question boils down to:
given a list of directories from some combination of ls and grep,
how do i step through the list?, e.g., i often do:
for dir in `ls`
do
if [ -d $dir ]
then
cd $dir
<do something in $dir>
fi
done
but if i have a directory named "aa bb" (note the space), then it's
not processed because i can't cd into "aa". it sees it as "aa", not
"aa bb".
i saw a trick to do this once, long ago. it had to do with putting
double quotes somewhere strategic, but i've forgotten the trick.
tiger
--
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