How to file split at a line number [closed]
file_name=test.log# set first K lines:K=1000# line count (N): N=$(wc -l < $file_name)# length of the bottom file:L=$(( $N - $K ))# create the top of file: head -n $K $file_name > top_$file_name# create bottom of file: tail -n $L $file_name > bottom_$file_nameAlso, on second thought, split will work in your case, since the first split is larger than the second. Split puts the balance of the input into the last split, so
split -l 300000 file_name
will output xaa with 300k lines and xab with 100k lines, for an input with 400k lines.