Perl seek/tell to skip forward once a string has matched

Hello all

I am trying to write a script that can search through a file from begining to end.
As it steps through the file it will look  for the following string....."Flushing".
When the string has been found it should skip forward to the string....
"End processing job LC21.1ST.xxx.017.CMYK at 17:23:45"
then the script should carry on looking for the next "Flushing" message.

Could someone start me off along the correct lines please?
See below for sample of the file to search in.

cheers

.......Ricky





MagProof: Post-processing command C:\JPS_Data\MagProof.cmd LC21.1ST.xxx.002.CMYK.pdf C:\JAWSOUTPUT\MagProofOut\SYSTEM\
MagProof: End processing job LC21.1ST.xxx.002.CMYK at 17:23:40
MagProof: Start processing job LC21.1ST.xxx.017.CMYK at 17:23:44
MagProof: %%[ Error:
MagProof: undefined
MagProof: ; OffendingCommand:
MagProof: ÅÐÓÆ¿Þ
MagProof:  ]%%
MagProof: %%[ Flushing: rest of job (to end-of-file) will be ignored ]%%
MagProof:
MagProof:
MagProof: Post-processing command C:\JPS_Data\MagProof.cmd LC21.1ST.xxx.017.CMYK.pdf C:\JAWSOUTPUT\MagProofOut\SYSTEM\
MagProof: End processing job LC21.1ST.xxx.017.CMYK at 17:23:45Start Free Trial