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Top Forums UNIX for Beginners Questions & Answers Another scripting help please, splitting files by range, maybe I don't need a script :( Post 303044575 by newbie_01 on Wednesday 26th of February 2020 09:13:44 PM
Old 02-26-2020
Another scripting help please, splitting files by range, maybe I don't need a script :(

Hi,


I requested the Windows SysAdmin to give me all available config files from a server.



Instead of sending it into several files, he combine all of them into one single file leaving it for me to split them up myself.


I was able to do so via a script below:



Code:
$ cat ./split_file.ksh
#!/bin/ksh
#

myPID=$$
grep -in "C:" file_to_split.txt > $myPID.tmp.00
cat $myPID.tmp.00

last_number=`tail -1 $myPID.tmp.00 | awk -F":" '{ print $1 }'`
switch=0
count=0

echo
echo "myPID = $myPID"
echo "last_number = $last_number"
echo

while read num
do
   if [[ $switch = 0 ]] ; then
      end=1
      switch=1
      continue
   else
      let count=$count+1
      start=$end
      end=`echo $num | awk -F":" '{ print $1-1 }'`
      echo "- Printing ${start} to ${end} ..."
      sed -n "${start},${end}p" file_to_split.txt > file_to_split.file.${count}.txt
      let end=$end+1

      if [[ $end = $last_number ]] ; then
         let count=$count+1
         start=$end
         echo "- Printing ${start} to the end ... "
         sed -n "${start},\$p" file_to_split.txt > file_to_split.file.${count}.txt
      fi
   fi
done < $myPID.tmp.00

rm $myPID.tmp*
echo
ls -l file_to_split.file.*txt
echo

wc -l file_to_split.txt
echo
wc -l file_to_split.file.*txt

exit 0

Sample output running the script is as below:


Code:
$ ./split_file.ksh
1:C:\Oracle\product\12.1.0\client_1_32Full\NETWORK\ADMIN\tnsnames.ora
6673:C:\Oracle\product\12.1.0\client_1_32Full\NETWORK\ADMIN\SAMPLE\tnsnames.oRA
13345:C:\Oracle\product\12.1.0\client_1_64Full\network\admin\tnsnames.ora
20017:C:\Oracle\product\12.1.0\client_1_64Full\network\admin\sample\tnsnames.oRA
26689:C:\Oracle\product\12.1.0\TNSNAMES\tnsnames.ora
33361:C:\Support\tnsnames.ora
39897:C:\Support\CHG0082341\tnsnames.ora

myPID = 26172
last_number = 39897

- Printing 1 to 6672 ...
- Printing 6673 to 13344 ...
- Printing 13345 to 20016 ...
- Printing 20017 to 26688 ...
- Printing 26689 to 33360 ...
- Printing 33361 to 39896 ...
- Printing 39897 to the end ...

-rw-r--r-- 1 oracle oinstall 363739 Feb 27 14:28 file_to_split.file.1.txt
-rw-r--r-- 1 oracle oinstall 363746 Feb 27 14:28 file_to_split.file.2.txt
-rw-r--r-- 1 oracle oinstall 363739 Feb 27 14:28 file_to_split.file.3.txt
-rw-r--r-- 1 oracle oinstall 363746 Feb 27 14:28 file_to_split.file.4.txt
-rw-r--r-- 1 oracle oinstall 363718 Feb 27 14:28 file_to_split.file.5.txt
-rw-r--r-- 1 oracle oinstall 352223 Feb 27 14:28 file_to_split.file.6.txt
-rw-r--r-- 1 oracle oinstall 363706 Feb 27 14:28 file_to_split.file.7.txt

46568 file_to_split.txt

   6672 file_to_split.file.1.txt
   6672 file_to_split.file.2.txt
   6672 file_to_split.file.3.txt
   6672 file_to_split.file.4.txt
   6672 file_to_split.file.5.txt
   6536 file_to_split.file.6.txt
   6672 file_to_split.file.7.txt
  46568 total

Is there an awk one-liner way of achieving the same result? Smilie
 

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diff3(1)							   User Commands							  diff3(1)

NAME
diff3 - 3-way differential file comparison SYNOPSIS
diff3 [-exEX3] filename1 filename2 filename3 DESCRIPTION
diff3 compares three versions of a file, and publishes disagreeing ranges of text flagged with these codes: ==== all three files differ ====1 filename1 is different ====2 filename2 is different ====3 filename3 is different The type of change suffered in converting a given range of a given file to some other is indicated in one of these ways: f : n1 a Text is to be appended after line number n1 in file f, where f = 1, 2, or 3. f : n1 , n2 c Text is to be changed in the range line n1 to line n2. If n1 = n2, the range may be abbreviated to n1. The original contents of the range follows immediately after a c indication. When the contents of two files are identical, the contents of the lower-numbered file is suppressed. The following command will apply the resulting script to filename1. (cat script; echo '1,$p') | ed - filename1 OPTIONS
-e Produce a script for the ed(1) editor that will incorporate into filename1 all changes between filename2 and filename3 (that is, the changes that normally would be flagged ==== and ====3). -x Produce a script to incorporate only changes flagged ====. -3 Produce a script to incorporate only changes flagged ====3. -E Produce a script that will incorporate all changes between filename2 and filename3, but treat overlapping changes (that is, changes that would be flagged with ==== in the normal listing) differently. The overlapping lines from both files will be inserted by the edit script, bracketed by <<<<<< and >>>>>> lines. -X Produce a script that will incorporate only changes flagged ====, but treat these changes in the manner of the -E option. USAGE
See largefile(5) for the description of the behavior of diff3 when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). FILES
/tmp/d3* /usr/lib/diff3prog ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWesu | |CSI |enabled | +-----------------------------+-----------------------------+ SEE ALSO
diff(1), attributes(5), largefile(5) NOTES
Text lines that consist of a single `.' will defeat -e. Files longer than 64 Kbytes will not work. SunOS 5.10 14 Sep 1992 diff3(1)
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