Use sed to truncate a file in-place sed
sed -i '11001,$ d' filename-imeans in place.dmeans delete.11001,$means the lines from 11001 to the end.
As a result, this command will create a file with 11,000 max.
Use sed to truncate a file in-place sed
sed -i '11001,$ d' filename-i means in place.d means delete.11001,$ means the lines from 11001 to the end.As a result, this command will create a file with 11,000 max.