Check for specific files - Shell Programming and Scripting

woosaah · #1 01-17-2006

Ok, i have a problem and not sure how to tackle this one as of yet.

I will have this job running in the cron every 5 minutes, i need it to check a directory for 5 files. These files are put into a directory from five different servers.

These 5 files will only have one part different in them, and that is what server they have come from. I need to check for these different files. I have put the file names into an array from a parameter file and just need to check them. the rest of the filename is just the date that the file was created.

is there an easy way to check a directory for the files, and check that each server has sent a file? there could be more than these 5 files in this one directory but they all have the extention .signed.off

once these 5 files are in there i have another process written for it to do something with these 5 files, so thats no problem (atm)

um.. i hope this makes sense.

Ygor · #2 01-18-2006

You could try using a loop to check the presence of each file, e.g....

Code:

for i in server_one server_two etc
do
  set *${i}.signed.off
  if [[ $# -eq 1 ]] && [[ -s $1 ]]
  then
     echo file from server $i is present, file name is $1
  else
     echo file from server $i is absent
  fi
done

woosaah · #3 01-18-2006

cheers ill try that next week, going on holiday and no comp going with me. ill let you know how it goes

woosaah · #4 01-23-2006

ok, i have a small question.

just what does

if [[ $# -eq 1 ]] && [[ -s $1 ]]

do? i am a bit new, and its not quite doing what i am askign it to do. i have an array of 5 items (0 -4) but this could change so i need it to go for each array (called SC) I have it going through 5 times now using a while loop

Code:

i=0
while (( i < ${#SC[*]}))
do
 set $signofffiles/*${i}*.signed.off

  if [[ $# -eq 1 ]] && [[ -s $1 ]]
  then
     echo file from server $i is present, file name is $1
  else
     echo file from server $i is absent
  fi
        ((i = i + 1))
done

signofffiles is the directory where the signofffiles are kept (to be changed when in production) but i am not sure if it is actually going into the direcotry
that i require

this is set as following

Code:

signofffiles=/home/nzbt6t/signoff/filedownload

the file name structure is scan.batchno.[SC].03.[YEARMONTHDAY].signed.off at this stage the date doesnt really matter but it may do.

at the moment it is saying the files are absent when i have put them in there manually. can anyone see what i have done to make it not work? i am sure somoene can.

cheers all for looking at my problem as well

aigles · #5 01-24-2006

set $signofffiles/*${i}*.signed.off
Generate file list and assign to positinal parameters $1 ...

if [[ $# -eq 1 ]] && [[ -s $1 ]]
Test if one not empty file found

Code:

i=0
while (( i < ${#SC[*]}))
do
  set $signofffiles/scan.batchno.${SC[$i]}.03.[0-9]*.signed.off        
  if [[ $# -eq 1 && -s $1 ]]
  then
     echo file from server $i is present, file name is $1
  else
     echo file from server $i is absent
  fi
  ((i = i + 1))
done

woosaah · #6 01-24-2006

Code:

i=0
while (( i < ${#SC[*]}))
do
  set $signofffiles/scan.batchno.${SC[$i]}.03.[0-9]*.signed.off
  if [[ $# -eq 1 && -s $1 ]]
  then
     echo file from server $i is present, file name is $1
  else
     echo file from server $i is absent
  fi
        ((i = i + 1))
done

Ok i have this... There is just something wrong with the if statement. but other than that it is working. the if statement is always picking up that there is something in $1. For example if the file is not there $1 is

Code:

/home/nzbt6t/signoff/filedownload/scan.batchno.CH.03.[0-9]*.signed.off

if a file is there, and i can see it it still comes out that the file is absent all the time. can anyone see anything really obvious about this? i am sure there is.

using echo $1 and echo $# as well as the output i am getting the following:

Code:

/home/nzbt6t/signoff/filedownload/scan.batchno.EL.03.20060119.signed.off
1
file from server 0 is absent
/home/nzbt6t/signoff/filedownload/scan.batchno.HN.03.20060119.signed.off
1
file from server 1 is absent
/home/nzbt6t/signoff/filedownload/scan.batchno.VV.03.20060119.signed.off
1
file from server 2 is absent
/home/nzbt6t/signoff/filedownload/scan.batchno.CH.03.[0-9]*.signed.off
1
file from server 3 is absent
/home/nzbt6t/signoff/filedownload/scan.batchno.DN.03.20060119.signed.off
1
file from server 4 is absent

btw thanks so much for your help so far i can feel i am so close. if it is was in vb it would be so simple

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