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Linux RedHat,  Inserting lines into file with a list from other file.

Posted on 2014-11-21
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Last Modified: 2014-11-25
Hi experts, I need to do an Insert of many lines into a file called test.ctl, before APPEND line:
LOAD DATA
----> here should be new lines <-----
APPEND
INTO TABLE "INT_OPERATIONS"
FIELDS TERMINATED BY '!'
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
(
SCADA_ID CHAR,
SCADA_SISTEMA CHAR,
SCADA_OPERATION_CLASS CHAR,
SCADA_OPERATION_SUBCLASS CHAR,
SCADA_OPERATION_DATE ,
SCADA_DATE_OFFSET ,
SCADA_OPERATION_TIMESTAMP "TO_TIMESTAMP(RPAD(SUBSTR(:SCADA_OPERATION_TIMESTAMP,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_PROCESS_STATUS ,
CERTA_PROCESS_DATE "TO_TIMESTAMP(RPAD(SUBSTR(:CERTA_PROCESS_DATE,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_OPERATION_ID ,
CERTA_NOTES CHAR,
INT_ID
 )

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But the lines must be obtained from a file called list.lst.
He has lines like:
Transfer_data.20141118194103
Transfer_data.20141118194132

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concatenated with string INFILE. then it should look like this:
LOAD DATA
INFILE Transfer_data.20141118194103
INFILE Transfer_data.20141118194132  
APPEND
INTO TABLE "INT_OPERATIONS"
FIELDS TERMINATED BY '!'
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
(
SCADA_ID CHAR,
SCADA_SISTEMA CHAR,
SCADA_OPERATION_CLASS CHAR,
SCADA_OPERATION_SUBCLASS CHAR,
SCADA_OPERATION_DATE ,
SCADA_DATE_OFFSET ,
SCADA_OPERATION_TIMESTAMP "TO_TIMESTAMP(RPAD(SUBSTR(:SCADA_OPERATION_TIMESTAMP,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_PROCESS_STATUS ,
CERTA_PROCESS_DATE "TO_TIMESTAMP(RPAD(SUBSTR(:CERTA_PROCESS_DATE,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_OPERATION_ID ,
CERTA_NOTES CHAR,
INT_ID
 )

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I tried with a script ksh:
ls -1 Transfer_data* > lista.lst
line=$(cat test.ctl | grep -n 'APPEND' | grep -o '^[0-9]*')
line=$((line -1))
for f in `cat  lista.lst`
   do
       sed -i ${line}' i\INFILE "$f"' 'test.ctl'
   done

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But the lines inserted are in any place, and with wrong sintaxis:
INFILE "$f"
INFILE "$f"
LOAD DATA
APPEND
INTO TABLE "INT_OPERATIONS"
FIELDS TERMINATED BY '!'
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
etc...

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Note ' INFILE "$f" 'on first and second place.

Can you help me find an alternative?
Thanks and regards
0
Comment
Question by:carlino70
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9 Comments
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40458317
Try this:

sed -i '/LOAD DATA/ r list.lst' test.ctl

This will add the lines in list.lst into test.ctl after the LOAD DATA line.
0
 
LVL 68

Expert Comment

by:woolmilkporc
ID: 40458328
awk '/APPEND/ {l=$0; while ((getline < "list.lst") > 0) {print "INFILE",$0}; print l; next} {print}' test.ctl
0
 
LVL 68

Accepted Solution

by:
woolmilkporc earned 500 total points
ID: 40458358
Since awk cannot change files "in place" add ">testnew.ctl" to write the changed content to a new file:

awk '/APPEND/ {l=$0; while ((getline < "list.lst") > 0) {print "INFILE",$0}; print l; next} {print}' test.ctl > testnew.ctl

By the way, a few modifications applied (mostly " instead of ' and the subtraction removed) your script will work, too:

ls -1 Transfer_data* > lista.lst
line=$(grep -n 'APPEND' test.ctl | grep -o '^[0-9]*')
for f in $(cat  lista.lst)
   do
       sed  -i "${line} i\INFILE $f" test.ctl
   done
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Author Comment

by:carlino70
ID: 40464468
woolmilkporc, your suggestion is ok, with a modification:
ls -1 Transfer_data* > lista.lst
line=$(cat test.ctl | grep -n 'APPEND' | grep -o '^[0-9]*')
line=$((line -0))                                                                   #here I do a change
     for f in $(cat  lista.lst)
        do
           sed  -i ${line}" i\INFILE $f" test.ctl
          # sqlldr epe/epe@xa21 control=test.ctl log=sqlldr.log
        done

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But when test.ctl is filled, the order is distinct that lista.lst:
see lista.ctl
Transfer_data.20141118194103
Transfer_data.20141118194132

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and see the order inside test.ctl
INFILE Transfer_data.20141118194132
INFILE Transfer_data.20141118194103

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How I can reverse the order?
Thanks
0
 
LVL 68

Expert Comment

by:woolmilkporc
ID: 40464515
It's quite normal that the order gets reversed - we read the list file line by line and insert that respective line just above "APPEND", i.e we read top-down and insert bottom-up.

We can use the "tac" utiity (on Linux only) instead of "cat" to reverse the order of the lines as they're presented to "for".
Line #4 of the last version you posted should then read:

 for f in $(tac  lista.lst)

Another option: Reverse the order in lista.lst by instructing "ls" to display the newest file first: "ls -t1 ...".

Obviously you should use just one of the above suggestions at a time!

By the way, why would you want to subtract "0" from "line"? The variable $line should be numeric ab ovo, so no need for an arithmetic NOP.

And how about my "awk" solution? Here the file is inserted as is above "APPEND", so the order will be kept automatically. Is it because "awk" cannot change "in place"?

Finally, the "sqlldr" command should not appear inside the "for" loop, because test.ctl will not contain all "INFILE" lines from lista.lst before the last iteration has completed!
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40464541
The 'sed' suggestion I made does not reverse order and is much shorter as well ;) So why don't you use that?
0
 

Author Comment

by:carlino70
ID: 40464637
woolmilkporc,

I appreciate your attention and suggestions. Finally, use the option "ls -t1", and so far it works.

Also, I took the loop sentence "sqlldr ...." was my mistake.

Thanks again.
0
 

Author Comment

by:carlino70
ID: 40464642
Gerwin Jansen, your suggestion not insert lines in test.ctl

Thanks anyway
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 40464667
>> Gerwin Jansen, your suggestion not insert lines in test.ctl
Sure it did, did you try my suggestion at all?

[gerwin@localhost ~]$ cat test.ctl
LOAD DATA
APPEND
INTO TABLE "INT_OPERATIONS"
FIELDS TERMINATED BY '!'
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
(
SCADA_ID CHAR,
SCADA_SISTEMA CHAR,
SCADA_OPERATION_CLASS CHAR,
SCADA_OPERATION_SUBCLASS CHAR,
SCADA_OPERATION_DATE ,
SCADA_DATE_OFFSET ,
SCADA_OPERATION_TIMESTAMP "TO_TIMESTAMP(RPAD(SUBSTR(:SCADA_OPERATION_TIMESTAMP,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_PROCESS_STATUS ,
CERTA_PROCESS_DATE "TO_TIMESTAMP(RPAD(SUBSTR(:CERTA_PROCESS_DATE,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_OPERATION_ID ,
CERTA_NOTES CHAR,
INT_ID
 )
[gerwin@localhost ~]$ cat list.lst
Transfer_data.20141118194103
Transfer_data.20141118194132
[gerwin@localhost ~]$ sed -i '/LOAD DATA/ r list.lst' test.ctl
[gerwin@localhost ~]$ cat test.ctl
LOAD DATA
Transfer_data.20141118194103
Transfer_data.20141118194132
APPEND
INTO TABLE "INT_OPERATIONS"
FIELDS TERMINATED BY '!'
OPTIONALLY ENCLOSED BY '"'
TRAILING NULLCOLS
(
SCADA_ID CHAR,
SCADA_SISTEMA CHAR,
SCADA_OPERATION_CLASS CHAR,
SCADA_OPERATION_SUBCLASS CHAR,
SCADA_OPERATION_DATE ,
SCADA_DATE_OFFSET ,
SCADA_OPERATION_TIMESTAMP "TO_TIMESTAMP(RPAD(SUBSTR(:SCADA_OPERATION_TIMESTAMP,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_PROCESS_STATUS ,
CERTA_PROCESS_DATE "TO_TIMESTAMP(RPAD(SUBSTR(:CERTA_PROCESS_DATE,1,21),24,'0'),'dd/mm/yyyy hh24:mi:ss.ff)')",
CERTA_OPERATION_ID ,
CERTA_NOTES CHAR,
INT_ID
 )
[gerwin@localhost ~]$

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