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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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SPLIT(1)						    BSD General Commands Manual 						  SPLIT(1)

NAME
split -- split a file into pieces SYNOPSIS
split -d [-l line_count] [-a suffix_length] [file [prefix]] split -d -b byte_count[K|k|M|m|G|g] [-a suffix_length] [file [prefix]] split -d -n chunk_count [-a suffix_length] [file [prefix]] split -d -p pattern [-a suffix_length] [file [prefix]] DESCRIPTION
The split utility reads the given file and breaks it up into files of 1000 lines each (if no options are specified), leaving the file unchanged. If file is a single dash ('-') or absent, split reads from the standard input. The options are as follows: -a suffix_length Use suffix_length letters to form the suffix of the file name. -b byte_count[K|k|M|m|G|g] Create split files byte_count bytes in length. If k or K is appended to the number, the file is split into byte_count kilobyte pieces. If m or M is appended to the number, the file is split into byte_count megabyte pieces. If g or G is appended to the num- ber, the file is split into byte_count gigabyte pieces. -d Use a numeric suffix instead of a alphabetic suffix. -l line_count Create split files line_count lines in length. -n chunk_count Split file into chunk_count smaller files. -p pattern The file is split whenever an input line matches pattern, which is interpreted as an extended regular expression. The matching line will be the first line of the next output file. This option is incompatible with the -b and -l options. If additional arguments are specified, the first is used as the name of the input file which is to be split. If a second additional argument is specified, it is used as a prefix for the names of the files into which the file is split. In this case, each file into which the file is split is named by the prefix followed by a lexically ordered suffix using suffix_length characters in the range ``a-z''. If -a is not speci- fied, two letters are used as the suffix. If the prefix argument is not specified, the file is split into lexically ordered files named with the prefix ``x'' and with suffixes as above. ENVIRONMENT
The LANG, LC_ALL, LC_CTYPE and LC_COLLATE environment variables affect the execution of split as described in environ(7). EXIT STATUS
The split utility exits 0 on success, and >0 if an error occurs. SEE ALSO
csplit(1), re_format(7) STANDARDS
The split utility conforms to IEEE Std 1003.1-2001 (``POSIX.1''). HISTORY
A split command appeared in Version 3 AT&T UNIX. BUGS
The maximum line length for matching patterns is 65536. BSD
May 9, 2013 BSD
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