Date: Tue, 10 Dec 2013 16:54:36 -0800 From: hiren panchasara <hiren.panchasara@gmail.com> To: Mark Johnston <markj@freebsd.org> Cc: freebsd-dtrace@freebsd.org Subject: Re: Examples from www.dtracebook.com Message-ID: <CALCpEUEPaiRkNfxBPynvOE7c_xOvtjt_CRSBLUpUDDPwTHscyQ@mail.gmail.com> In-Reply-To: <20131211003245.GA4080@raichu> References: <CALCpEUFnwN%2BmwTDyq-_q3x8jkk8EBfzMMyRzVeHDrHq=j-nqVg@mail.gmail.com> <20131210234714.GQ1681@albert.catwhisker.org> <CALCpEUGms0S%2BQue%2B6TmAZmRW4t8LZh02r-q%2Bvf1WupDkwcpH-Q@mail.gmail.com> <CALCpEUE7%2BPY9tCdc3R-cXfeXCy%2BRYmz9aNTKcbwat3tgvniORQ@mail.gmail.com> <20131211003245.GA4080@raichu>
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On Tue, Dec 10, 2013 at 4:32 PM, Mark Johnston <markj@freebsd.org> wrote:
> On Tue, Dec 10, 2013 at 04:26:54PM -0800, hiren panchasara wrote:
>> $ sudo dtrace -n 'proc:::exec-success { trace(curpsinfo->pr_psargs); }'
>> dtrace: description 'proc:::exec-success ' matched 1 probe
>> CPU ID FUNCTION:NAME
>> 5 48876 :exec-success /bin/sh /usr/bin/man ls
>> 2 48876 :exec-success /sbin/sysctl -n hw.machine_arch
>> 6 48876 :exec-success /sbin/sysctl -n hw.machine
>> 0 48876 :exec-success /usr/bin/locale
>> 7 48876 :exec-success /usr/bin/zcat
>> /usr/share/man/man1/ls.1.gz
>> 2 48876 :exec-success head -1
>> 1 48876 :exec-success tbl
>> 6 48876 :exec-success groff -S -P-h -Wall
>> -mtty-char -man -Tascii -P-c
>> 7 48876 :exec-success /usr/bin/zcat
>> /usr/share/man/man1/ls.1.gz
>> 3 48876 :exec-success less
>> 3 48876 :exec-success troff -Wall -mtty-char
>> -man -Tascii
>> 7 48876 :exec-success grotty -h -c
>>
>>
>> 6 48876 :exec-success top
>> 7 48876 :exec-success ps awwux
>> 7 48876 :exec-success iostat
>> 5 48876 :exec-success vmstat 1
>> 4 48876 :exec-success bash
>> 4 48876 :exec-success whois
>> 5 48876 :exec-success whoami
>> 4 48876 :exec-success devinfo
>> 4 48876 :exec-success dmesg
>> 6 48876 :exec-success pciconf -lv
>>
>> I am getting interesting info only when "man" is executed and not for
>> any other command. What does that tell me? How is man special? Other
>> programs must also be doing exec(2), no?
>
> /usr/bin/man is a shell script. You'll see similar output for any
> executable that starts with a shebang.
Thanks Mark for responding but that doesn't seem true.
I tried apropos(1) without luck.
cheers,
Hiren
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