How to split one text file into multiple *.txt files?

Question

I got a text file file.txt(12 MBs) containing:

something1
something2
something3
something4
(...)

Is there any way to split

Answer 1

John's answer won't produce .txt files as the OP wants. Use:

split -b=1M -d  file.txt file --additional-suffix=.txt

Answer 2

Using bash:

readarray -t LINES < file.txt
COUNT=${#LINES[@]}
for I in "${!LINES[@]}"; do
    INDEX=$(( (I * 12 - 1) / COUNT + 1 ))
    echo "${LINES[I]}" >> "file${INDEX}.txt"
done

Using awk:

awk '{
    a[NR] = $0
}
END {
    for (i = 1; i in a; ++i) {
        x = (i * 12 - 1) / NR + 1
        sub(/\..*$/, "", x)
        print a[i] > "file" x ".txt"
    }
}' file.txt

Unlike split this one makes sure that number of lines are most even.

Answer 3

Try something like this:

awk -vc=1 'NR%1000000==0{++c}{print $0 > c".txt"}' Datafile.txt

for filename in *.txt; do mv "$filename" "Prefix_$filename"; done;

Answer 4

Regardless to what is said above, on my ubuntu 16 i had to do :

> split -b 10M -d  system.log system_split.log 

Please note the space between -b and the value

Answer 5

You can use the linux bash core utility split

split -b 1M -d  file.txt file 

Note that M or MB both are OK but size is different. MB is 1000 * 1000, M is 1024^2

If you want to separate by lines you can use -l parameter.

UPDATE

a=(`wc -l yourfile`) ; lines=`echo $(($a/12)) | bc -l` ; split -l $lines -d  file.txt file

Another solution as suggested by Kirill, you can do something like the following

split -n l/12 file.txt

Note that is l not one, split -n has a few options, like N, k/N, l/k/N, r/N, r/k/N.

Answer 6

If each part have the same lines number, for example 22, here my solution:
split --numeric-suffixes=2 --additional-suffix=.txt -l 22 file.txt file
and you obtain file2.txt with the first 22 lines, file3.txt the 22 next line…

Thank @hamruta-takawale, @dror-s and @stackoverflowuser2010