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Old 21st March 2013
J65nko J65nko is offline
Join Date: May 2008
Location: Budel - the Netherlands
Posts: 3,507

$ file Downloads/*iso
Downloads/FreeBSD-9.1-RELEASE-i386-disc1.iso: ISO 9660 CD-ROM
filesystem data 'FREEBSD_INSTALL' (bootable)

$ file $(which s2p)
/usr/bin/s2p: a /usr/bin/perl script text executable

$ file /bin/ls
/bin/ls: ELF 64-bit LSB executable, x86-64, version 1, for OpenBSD,
statically linked, stripped

$ file /bsd    
/bsd: ELF 64-bit LSB executable, x86-64, version 1, statically linked,
not stripped

$ file pf-redir
pf-redir: ASCII text

$ file tip.record
tip.record: ASCII English text, with very long lines, with CRLF,
CR, LF line terminators, with escape sequences, with overstriking

$ file Little-endian UTF-16 Unicode character data, with CR line
See file(1)
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump
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