Counting files in a directory that match a pattern

dsravan · #1 (**permalink**) 07-20-2006

I have 20 files in a direcotry like BARE01_DLY_MKT_YYYYMMDD. The MKT differes for all these files but the remaining syntax remains the same for a particular day. If I am checking for today I need to make sure that there are 20 files that start with BARE01_DLY_MKT_20060720. How can I write a shell script to do this? I think I have to use for loop but don't know how to check for today or not. Kindly help.

Glenn Arndt · #2 (**permalink**) 07-20-2006

Using ksh:

Code:

integer filecount=0
for file in BARE01_DLY_???_$(date +%Y%m%d); do
  filecount=$filecount+1
done
echo $filecount

Your test could look something like:

Code:

if (( $filecount == 20 )); then
  print "True"
else
  print "False"
fi

aigles · #3 (**permalink**) 07-20-2006

You can also do something like this :

Code:

integer filecount=$(ls BARE01_DLY_???_$(date +%Y%m%d) 2>/dev/null | wc -l)

Jean-Pierre.

dsravan · #4 (**permalink**) 07-20-2006

Pierre,

Do you mean i have to have the code like this:

integer filecount=0
for file in BARE01_DLY_???_$(date +%Y%m%d); do
filecount=$filecount+1
done
echo $filecount

if (( $filecount == 20 )); then
print "True"
else
print "False"
fi

is this right? How can i embed them in the single KSH script. Please let me know.

Glenn Arndt · #5 (**permalink**) 07-20-2006

I don't know what you expect as output. Without knowing all your requirements (and without having a desire to write the entire script for you), I would do:

check20.sh:

Code:

#!/bin/ksh
integer filecount=0
for file in BARE01_DLY_???_$(date +%Y%m%d); do
  filecount=$filecount+1
done

if (( $filecount == 20 )); then
  exit 0 # exit with success
else
  exit 1 # exit with failure
fi

dsravan · #6 (**permalink**) 07-20-2006

Glenn,

I am sorry if I had asked to mean to write a script. But I created the script with the statements. What I need to know is I need to pass the name of the file as a parameter to the script and then do the processing we had before. How can this be possible.

The name of the files will look like BARE01_DLY_MKT_yyyymmdd for 20 markets. This script need to work for files named BARE02_DLY_MKT_20060803
which will be 20 again. So I need to generalise the script and pass the name of the file as parameter. So how can acheive this. Please let me know. I am trying to learn and develop at the same time.

Once again I appreicate your knid response.

Glenn Arndt · #7 (**permalink**) 07-20-2006

You're checking to see if 20 files named using the form, "BARE01_DLY_MKT_yyyymmdd" (where "MKT" is variable between all 20 files). How would passing one file name to the script help? Unless you mean to pass the date to the script so that it checks for that date? That is, today's date is 20060720, but you want to check for 20 files with the date 20060719...?

check20.sh 20060803:

Code:

#!/bin/ksh
mydate=$1
integer filecount=0
for file in BARE01_DLY_???_$mydate; do
  filecount=$filecount+1
done

if (( $filecount == 20 )); then
  exit 0
else
  exit 1
fi

Note that there is no error checking here. You can feed anything you want as the date.

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