bash script to check how many files in directory

guest · 01-31-2009, 02:57 PM

hey guys,
i was wondering if there's a bash script to check the amount of files in a directory with an IF statement..

like:

IF directory has less than 100 files
(executes command)
ELSE
Done

Thanks in advance guys!!

I know this is to check if directory is empty:

Code:

#!/bin/bash
DIR="/tmp"
# init
# look for empty dir
if [ "$(ls -A $DIR)" ]; then
     echo "Take action $DIR is not Empty"
else
    echo "$DIR is Empty"
fi
# rest of the logic

But how to check if a directory has less than 100 files

ErV · 01-31-2009, 03:27 PM

Quote:

Originally Posted by guest

But how to check if a directory has less than 100 files

Try "ls -l|wc -l"

guest · 01-31-2009, 03:32 PM

hmm how do i specify it in the script? where does 100 go? i'm super noob at this..

lwasserm · 01-31-2009, 04:06 PM

You could use something like this:

filecount() { echo $# ; }

if [ $(filecount *) -le 100 ]; then

do_this
else
do_that

fi

guest · 01-31-2009, 04:11 PM

but filecount doesn't work in bash?

alan_ri · 01-31-2009, 05:18 PM

Hi!
I just wrote a little script for you.Hope you will find it useful;

Code:

#!/bin/bash
ls -l | grep -v ^l | wc -l > log.txt
log=`ls -l | grep -v ^l | wc -l`
if [ "$log" -ge "100" ]
then
echo "This directory has more then 100 files!"
else
echo "This directory has less then 100 files"
your command
fi

You can name the script 100.sh and just save it in the directory where you want to run it.Just cd into that directory and run;

Code:

./100.sh

If you have some questions,just ask.

guest · 01-31-2009, 05:45 PM

sweet thanks~! what is the "grep -v ^l" for btw?

pixellany · 01-31-2009, 08:36 PM

It's "grep -v ^l"

Print all lines that do not begin with "l"

ta0kira · 01-31-2009, 11:55 PM

You guys are leaving out a whole mess of . files:

Code:

if [ $( find -maxdepth 1 | grep -cv '^\.$' ) -lt 100 ]; then
  echo less
else
  echo more or equal
fi

ta0kira

PS The grep pattern will prevent . from showing up.

PPS If you only want real files, add -type f after -maxdepth 1.