| OS | Man Page | Section | Hits |
|---|---|---|---|
| opensolaris | re_syntax | 1t | 152 |
| opendarwin | re_syntax | n | 94 |
| freebsd | re_syntax | 3tcl | 82 |
| hpux | re_syntax | 3tcl | 82 |
| debian | re_syntax | 3tcl | 79 |
| centos | re_syntax | n | 77 |
| ultrix | re_syntax | 3tcl | 76 |
| osx | re_syntax | n | 73 |
| redhat | re_syntax | n | 61 |
| redhat | re_syntax | 3tcl | 60 |
| suse | re_syntax | n | 57 |
| mojave | re_syntax | ntcl | 55 |
| mojave | re_syntax | n | 44 |