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testing if a file is a directory

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# 1  
Old 06-10-2009
testing if a file is a directory
i have written this simple script called isdir.sh

Code:
#! /bin/bash 
dir=$1
_ls=`ls $dir`
for file in $_ls
do
    if [ -d "$file" ]
    then
        echo "D $file"
    fi
done

the output is not right.
for example

$ ./isdir.sh src
***no output***

but i have in ~/src some directories

drwxr-xr-x 2 and and 4096 2009-06-04 17:39 awk
drwxr-xr-x 2 and and 4096 2009-06-10 19:16 bash
drwxr-xr-x 2 and and 4096 2009-06-07 13:25 c
-rw-r--r-- 1 and and 415810 2009-05-19 21:59 prog.tar.gz
drwxr-xr-x 4 and and 4096 2009-06-09 22:20 python

what is wrong?Thank you!
Last edited by vidyadhar85; 06-10-2009 at 05:56 PM.. Reason: code tag added
# 2  
Old 06-10-2009
from where you are running this scipt??
because you are looking for dir in src but for that you should run this from src
or change dir to src in the begining of script.
Code:
#! /bin/bash 
cd ~/$1
for file in * 
do
if [ -d "$file" ]
then
echo "D $file"
fi
done

# 3  
Old 06-10-2009
Quote:
Originally Posted by and77
i have written this simple script called isdir.sh

When you post code, please wrap it in [code] tags.
Quote:
Code:
#! /bin/bash 
dir=$1
_ls=`ls $dir`
for file in $_ls


That will fail if any filenames contain spaces. Use:

Code:
for file in "$dir"/*

Quote:
Code:
do
    if [ -d "$file" ]
    then
        echo "D $file"
    fi
done

the output is not right.
for example

$ ./isdir.sh src

Put scripts in a central location, e.g., $HOME/bin, and add that to your PATH.
Quote:
***no output***

but i have in ~/src some directories

Are you in ~ when you issue that command?

If not, use the full path to the directory:

Code:
./isdir.sh ~/src

# 4  
Old 06-11-2009
[SOLVED] testing if a file is a directory
Thank you!
Now I have the problem to walk through the directory tree starting from the one passed to the script.Is it possible doing it with bash?I think to use recursive tecnique.Is it right?
# 5  
Old 06-11-2009

Bare-bones recursive walk of file hierarchy:

Code:
do_dir()
{
  cd "$1" || return 1
  for file in "$PWD"/*
  do
    if [ -d "$file" ]
    then
      printf "\nDescend into directory: %s (y/n/q)? " "$file"
      read reply
      case $reply in
        y*|Y*) do_dir "$file" ;;
        q) return ;;
      esac
    else
      printf "File: %s\n" "$file"
    fi
  done
}

do_dir "${1:-.}"

# 6  
Old 06-23-2009
Thank you!
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