Shell Programming and Scripting

ln=2
split -l $ln  inputfile_name

kent$  seq 10|awk '{f=(NR%2)==0?NR/2:int(NR/2+1); print >  f".txt"}'

kent$  head {1..5}.txt
==> 1.txt <==
1
2

==> 2.txt <==
3
4

==> 3.txt <==
5
6

==> 4.txt <==
7
8

==> 5.txt <==
9
10

val=2
awk -v val="$val" 'BEGIN{i=1}{if(t==1){i++;t=0}}
{if($0%val==0){t=1};file="File_"i".txt";print >>file}' inputFile

awk -v val="$val" 'BEGIN{i=1}{if(t==1){i++;t=0}}
{if($0%val==0){t=1};file="File_"i".txt";print >>file}' inputFile

$ cat File_1.txt
1
2
3
4
$ cat File_2.txt
5
6
7
8
$ cat File_3.txt
9
0
$ cat File_4.txt
11
12
$ cat File_5.txt
13
14
15

4.txt
3.txt
2.txt
1.txt

[root@D152153 tmp]# cat input_file
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

[root@D152153 tmp]# awk -v val="$val" 'BEGIN{i=1}{if(t==1){i++;t=0}}
{if($0%val==0){t=1};file="File_"i".txt";print >>file}' input_file

[root@D152153 tmp]# cat File_1.txt
1
2
3
4

[root@D152153 tmp]# cat File_2.txt
5
6
7
8

[root@D152153 tmp]# cat File_3.txt
9
10
11
12

[root@D152153 tmp]# cat File_4.txt
13
14
15