On Tue, Dec 10, 2013 at 5:00 PM, Mark Johnston <[email protected]> wrote: > On Tue, Dec 10, 2013 at 04:54:36PM -0800, hiren panchasara wrote: >> On Tue, Dec 10, 2013 at 4:32 PM, Mark Johnston <[email protected]> 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. > > I get the following with "apropos dtrace": > > mark@raichu: ~ $ sudo dtrace -n 'proc:::exec-success > {trace(curpsinfo->pr_psargs);}' > Password: > dtrace: description 'proc:::exec-success ' matched 1 probe > CPU ID FUNCTION:NAME > 4 35852 :exec-success /bin/sh /usr/bin/apropos dtrace > 2 35852 :exec-success grep -Ehi -- dtrace > /usr/share/man/whatis /usr/local/man/whatis /usr/share/openssl/man/whatis > /usr/local/lib/perl5/5.14/man/whatis /usr/local/lib/perl5/5.14/perl/man/whatis > 2 35852 :exec-success /usr/bin/less -i > > I don't really know what you mean by "interesting info." The other > programs you ran (whoami, pciconf, dmesg, devinfo) above don't call > execv().
My bad. I am now seeing the o/p what you are seeing above. "interesting info" == exec calls :p Thanks a lot, Hiren _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-dtrace To unsubscribe, send any mail to "[email protected]"
