====== Ubuntu - Bash - Scripts - kind ======

Displays the names of all files in the specified directory with the specified type.  

If you do not specify any type it defaults to text files.

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===== Usage =====

<code bash>
kind [-a] [-d] [-t] [-x] [file...]
</code>

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===== Code =====

<code bash>
#!/bin/bash
#
# @(#) kind v1.0   Prints files of the same kind
#

if [ $# -gt 0 ]
then if [ `echo $1 | cut -c1` = "-" ]
  then case #1 in
    -a)   KIND='archive'
          shift;;
    -d)   KIND='data'
          shift;;
    -t)   KIND='text'
          shift;;
    -x)   KIND='executable'
          shift;;
     *)   echo "kind: arg error"                           >&2
          echo "usage: kind [-a] [-d] [-t] [-x] [file...]" >&2
          echo "       -a  archive"                        >&2
          echo "       -d  data"                           >&2
          echo "       -t  text, default"                  >&2
          echo "       -x  executable"                     >&2
          echo "       if no args, reads stdin"            >&2
          exit 1;;
    esac
    fi
  fi

: ${KIND:='text'}

case $# in
  0)   while read FILE
       do
           file $FILE | fgrep $KIND | cut -d: -f1
       done;;
  *)   file $@ | fgrep $KIND | cut -d: -f1;;
esac
</code>

FILE contains the file names as they are read from stdin (Standard input).

KIND contains the text string that defines the type of file.

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===== Examples =====

Display all text files in the directory /etc.

<code bash>
more `kind /etc/*`
</code>

That is actually hatched a list of all data files. 

----

And if I have done the following sequence of commands **cd /etc** and **kind -d ***.

<code bash>
kind -d /etc/*
</code>

Possible result:

<code bash>
/etc/mnttab
/etc/utmp
/etc/wtmp
</code>

----

<code bash>
od `kind -d /etc/*`
</code>

----

<code bash>
ll `sh -x kind -a /lib/*` | m
</code>

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<code bash>
find / -print | kind -x | while read FILE
     > do
     >        ll $FILE
     > done > /tmp/filelist
</code>