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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