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Old 07-02-2009
q8devilish q8devilish is offline
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Join Date: Jun 2009
Location: Kuwait
Posts: 16
shell script to partial delete
guys i need some help in writing a shell script, what i am trying to write is a shell script that can delete generated trace files my software usually generated everyday, i will give an example to make it easy to understand

Code:
root@cms-db # pwd
/pcard17/trace
root@cms-db # ls -l HSM_VERIF.TRC*
-rw-r--r--   1 pwrcard  dba      4194432 Jul  1 00:18 HSM_VERIF.TRC111111545
-rw-r--r--   1 pwrcard  dba      4194432 Jul  1 00:51 HSM_VERIF.TRC111111546
-rw-r--r--   1 pwrcard  dba      4195092 Jul  1 01:29 HSM_VERIF.TRC111111547
-rw-r--r--   1 pwrcard  dba      4194432 Jul  1 02:22 HSM_VERIF.TRC111111548
-rw-r--r--   1 pwrcard  dba      4195092 Jul  1 04:02 HSM_VERIF.TRC111111549
-rw-r--r--   1 pwrcard  dba      4194432 Jul  1 05:33 HSM_VERIF.TRC111111550
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 06:16 HSM_VERIF.TRC111111551
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 06:40 HSM_VERIF.TRC111111552
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 06:58 HSM_VERIF.TRC111111553
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 07:15 HSM_VERIF.TRC111111554
-rw-r--r--   1 pwrcard  dba      4195752 Jul  2 07:34 HSM_VERIF.TRC111111555
-rw-r--r--   1 pwrcard  dba      4195488 Jul  2 07:52 HSM_VERIF.TRC111111556
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 08:04 HSM_VERIF.TRC111111557
-rw-r--r--   1 pwrcard  dba      4195224 Jul  2 08:16 HSM_VERIF.TRC111111558
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 08:27 HSM_VERIF.TRC111111559
-rw-r--r--   1 pwrcard  dba      4195224 Jul  2 08:37 HSM_VERIF.TRC111111560
-rw-r--r--   1 pwrcard  dba      4195620 Jul  2 08:45 HSM_VERIF.TRC111111561
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 08:57 HSM_VERIF.TRC111111562
-rw-r--r--   1 pwrcard  dba      4194828 Jul  2 09:06 HSM_VERIF.TRC111111563
-rw-r--r--   1 pwrcard  dba      4195356 Jul  2 09:13 HSM_VERIF.TRC111111564
-rw-r--r--   1 pwrcard  dba      4194696 Jul  2 09:20 HSM_VERIF.TRC111111565
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 09:28 HSM_VERIF.TRC111111566
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 09:36 HSM_VERIF.TRC111111567
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 09:43 HSM_VERIF.TRC111111568
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 09:50 HSM_VERIF.TRC111111569
-rw-r--r--   1 pwrcard  dba      4195092 Jul  2 09:56 HSM_VERIF.TRC111111570
-rw-r--r--   1 pwrcard  dba      4194564 Jul  2 10:04 HSM_VERIF.TRC111111571
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 10:11 HSM_VERIF.TRC111111572
-rw-r--r--   1 pwrcard  dba      4195092 Jul  2 10:17 HSM_VERIF.TRC111111573
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 10:23 HSM_VERIF.TRC111111574
-rw-r--r--   1 pwrcard  dba      4194828 Jul  2 10:29 HSM_VERIF.TRC111111575
-rw-r--r--   1 pwrcard  dba      4194432 Jul  2 10:34 HSM_VERIF.TRC111111576
-rw-r--r--   1 pwrcard  dba       886908 Jul  2 10:36 HSM_VERIF.TRC111111577

what i am trying to do is crating a script that will delete only yesterday files and keep only latest 2 files for security reasons.

my attempt in creating was like that to delete all yesterday file

Code:
#!/bin/bash
clear
echo "Please Enter YESTERDAYS Date in this order Mmm dd"
echo -n "Enter Date:"
read otaibi
ls -l /pcard17/trace | grep "$otaibi" | grep HSM_VERIF.* | nawk '{print $9}' > /pcard17/trace/delete.txt
clear
cd /pcard17/trace
cat /pcard17/trace/delete.txt | while read line; do rm "$line" ; done

now how can i delete yesterday files and keep latest 2 files?