Bash sort and skip the header.

bash sorting

cat YOURFILE| (read -r; printf "%s\n" "$REPLY"; sort)

bash sorting

Is header the first line of the file?If it is, try next one:

for i in file* do  head -1 ${i} > h${i}  sed 1d ${i} | sort -k 1,1 -k 3,3n -t\; >> h${i}  rm ${i}done

bash sorting

You can remove the header before sorting using sed. untested code.

for i in file* do  sed 1d ${i} | sort -k 1,1 -k 3,3n -t\; > h${i}  rm ${i}done

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