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05-17-2007
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Help with tail /grep needed
Hello:
I'm a very newbee at UNIX/AIX. What i want to do is to tail a file from the bottom until a certain string is found and write all the lines after the found string to another file. I've tried out a lot of combination with tail and grep but doesn't find the good one. Could someone help me or give me a hint with this issue? Many thanks in advance, Felix |
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05-17-2007
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Felix,
Could you please give us a sample of input and output? Thanks |
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05-17-2007
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INPUT lOG:-> this is the file i want to serach -> string to search
 atabase Connection InformationDatabase Connection Information Database server = SQL authorization ID = Local database alias = Number of rows read = 18724 Number of rows skipped = 0 Number of rows loaded = 18724 Number of rows rejected = 0 Number of rows deleted = 0 Number of rows committed = 18724 DB20000I The RUNSTATS command completed successfully. DB20000I The SQL command completed successfully. DB20000I The SQL command completed successfully. B20000I The RUNSTATS command completed successfully. Database Connection Information Database server = SQL authorization ID = Local database alias = Number of rows read = 18724 Number of rows skipped = 0 Number of rows loaded = 18724 Number of rows rejected = 0 Number of rows deleted = 0 Number of rows committed = 18724 DB20000I The RUNSTATS command completed successfully. DB20000I The SQL command completed successfully. DB20000I The SQL command completed successfully. DB20000I The RUNSTATS command completed successfully. ---------- --------------- -------------- ------------- ------------- The Output file i want to have is only the first part of it beginning from the buttom: Database Connection Information Database server = SQL authorization ID = Local database alias = Number of rows read = 18724 Number of rows skipped = 0 Number of rows loaded = 18724 Number of rows rejected = 0 Number of rows deleted = 0 Number of rows committed = 18724 DB20000I The RUNSTATS command completed successfully. DB20000I The SQL command completed successfully. DB20000I The SQL command completed successfully. DB20000I The RUNSTATS command completed successfully. Thank you. |
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05-17-2007
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Felix,
See if this works for you: Code:
mBaseStr='Database Connection Information' mLastOccur=`egrep -n "$mBaseStr" input_file | tail -1` mFromLine=`echo $mLastOccur | cut -d':' -f1` tail +$mFromLine input_file |
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