どれが Perl script か
/usr/local/bin のプログラムのうち、どれが Perl で書かれているモノかを知る。
%cd /usr/local/bin %\ls -1 | xargs file | grep 'perl script'
すると、こんなのが表示されます：
afmtodit: perl script text executable autoheader-2.61: perl script text executable autoheader259: perl script text executable autom4te-2.61: perl script text executable autom4te259: perl script text executable autoreconf-2.61: perl script text executable autoreconf259: perl script text executable autoscan-2.61: perl script text executable autoscan259: perl script text executable autoupdate-2.61: perl script text executable autoupdate259: perl script text executable c2ph: perl script text cpan: perl script text dprofpp: perl script text enc2xs: perl script text fastest_cvsup: perl script text executable find2perl: perl script text findsmb: perl script text executable h2ph: perl script text h2xs: perl script text help2man: perl script text ifnames-2.61: perl script text executable （以下略）
別な書き方：
%cd /usr/local/bin %file * | grep 'perl script'
