Compressing files older than 30 days, but timestamp is part of filename

Mercurial · #1 (**permalink**) 06-08-04, 16:46

I need to write a script that will compress files inside several directories that are older than 30 days.

The problem is the time stamp is wrong on the directories and the files and the correct date is actually in the name of the directory/file e.g. file070504, so the script will have to extract this, convert this to date format, add 30 days to it and if it was to equal todays date then it would execute a compress command on it.

Can anyone help? quite lost

LKBrwn_DBA · #2 (**permalink**) 06-08-04, 17:32

Try something like this:

Code:

#!/bin/ksh

cMM=$(date +%m)
cDD=$(date +%d)
cYY=$(date +%y)
echo "Today is: $cMM/$cDD/$cYY"

for f in $(ls -1 file*)
do
  dt=$(echo $f|cut -c5-)
  m=$(echo $dt|cut -c1-2)
  d=$(echo $dt|cut -c3-4)
  y=$(echo $dt|cut -c5-6)
  #echo "File date is: ${m}/${d}/${y}"
  cmpss="N"
  if [ y -eq cYY ]
  then
    if [ m -lt cMM ]
    then
      cmpss="Y"
    else
      if [ m -eq cMM ]
      then
        (( d0 = cDD - d ))
        if [ d0 -gt 29 ]
        then
          cmpss="Y"
        fi
      fi
    fi
  else
    if [ y -lt cYY ]
    then
      if [ m -lt 12 ]
      then
        cmpss="Y"
      else
        (( d0 = 31 - d + cDD ))
        if [ d0 -gt 29 ]
        then
          cmpss="Y"
        fi
      fi
    fi
  fi
  if [[ "$cmpss" == "Y" ]]
  then
    compress $f
    echo "File $f compressed."
  fi
done

LKBrwn_DBA · #3 (**permalink**) 06-08-04, 17:42

PS: Replace the following line of code from:

for f in $(ls -1 file*)

to:

for f in $(ls -1 file*|grep -v '.Z')

LKBrwn_DBA · #4 (**permalink**) 06-08-04, 22:34

The script is still NOT perfect, but this version is a bit more accurate:

Code:

#!/bin/ksh

cMM=$(date +%m)
cDD=$(date +%d)
cYY=$(date +%y)
echo "Today is: $cMM/$cDD/$cYY"

for f in $(ls -1 file*|grep -v '.Z')
do
  dt=$(echo $f|cut -c5-)           # Location of the date in file name
  m=$(echo $dt|cut -c1-2)        # Month
  d=$(echo $dt|cut -c3-4)        # Day
  y=$(echo $dt|cut -c5-6)        # Year
  #echo "File date is: ${m}/${d}/${y}"
  cmpss="N"
  if [ y -eq cYY ]
  then
    (( diff = cMM - m ))
    if [ diff -gt 1 ]
    then
      cmpss="Y"
    else
      if [ diff -eq 1 ]
      then
        (( d0 = 31 - cDD + d ))
        if [ d0 -ge 30 ]
        then
          cmpss="Y"
        fi
      else
        if [ d -gt 29 ]
        then
          cmpss="Y"
        fi
      fi
    fi
  else
    if [ y -lt cYY ]
    then
      if [ m -lt 12 ]
      then
        cmpss="Y"
      else
        (( d0 = 31 - d + cDD ))
        if [ d0 -ge 30 ]
        then
          cmpss="Y"
        fi
      fi
    fi
  fi
  if [[ "$cmpss" == "Y" ]]
  then
    compress $f
    echo "File $f compressed."
  fi
done

Mercurial · #5 (**permalink**) 06-10-04, 04:40

Thanks for the help, will work from there

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