this is caused by the cartage return on the ending of first line. To fix this, you can
1. add -w to the end of the line. make it #!/usr/bin/perl -w
or
2. $ perl -pi.bak -e ‘s/ 15//’ *.pl
this is caused by the cartage return on the ending of first line. To fix this, you can
1. add -w to the end of the line. make it #!/usr/bin/perl -w
or
2. $ perl -pi.bak -e ‘s/ 15//’ *.pl