test $# -eq 0 && echo usage: $0 file && exit
tmp_file=/tmp/tmp.$( basename $1 )
cp $1 $tmp_file
sed 1d $tmp_file |
sort -k1 |
cat <( head -1 $tmp_file ) - > $1
rm -f $tmp_file
test $# -eq 0 && echo usage: $0 file && exit
tmp_file=/tmp/tmp.$( basename $1 )
cp $1 $tmp_file
sed 1d $tmp_file |
sort -k1 |
cat <( head -1 $tmp_file ) - > $1
rm -f $tmp_file