| OS | Man Page | Section | Hits |
|---|---|---|---|
| opensolaris | re_syntax | 1t | 133 |
| freebsd | re_syntax | 3tcl | 72 |
| ultrix | re_syntax | 3tcl | 65 |
| debian | re_syntax | 3tcl | 63 |
| opendarwin | re_syntax | n | 62 |
| hpux | re_syntax | 3tcl | 62 |
| centos | re_syntax | n | 61 |
| redhat | re_syntax | 3tcl | 49 |
| osx | re_syntax | n | 44 |
| redhat | re_syntax | n | 43 |
| suse | re_syntax | n | 42 |
| mojave | re_syntax | ntcl | 39 |
| mojave | re_syntax | n | 36 |