Don, I tried the way you told me earlier while practising SUID. Now, also, I did the same you wrote but still the other user can't read the private file.
Please have a look at the attachment which is self explanatory.
I logged in as "Bholua". She created filename "private.txt" with "700" permission.
She created bb.sh with "755" permission.
Then with su command , "chunmun" logged in the system. She ran bb.sh. She was able to execute the script but the same error message"permission denied" was shown when the private file had to be opened. That means "chunmun" couldn't get the power of the owner "Bholua".
Please see where the point is which we are missing.
Hoping to get a reply soon.
Aloha,
I'm attempting to use a C program to create directories and then use a system call to have another program write .dat files into that directory. I understand that I could use the "system("mkdir directory_name")" function however, I would like my program to create a new directory each time... (3 Replies)
Hi ,
I want to create a new user using c program not with unix adduser command .
is it possible to write a cprogram to create a new user account , it should accept username , grouid , group name and all other privilages .
i can use system calls inside c program to do this .
i will... (5 Replies)
Hi Guru,s/Geek,s
I need help to create RPM names from rpms.
Example :
a2ps-4.14-6.fc10.i386
perl-Email-Find-0.10-2.fc10.noarch
directfb-1.2.7-2.fc10.i386
libid3tag-0.15.1b-7.fc10.i386
apr-util-1.3.7-1.fc10.i386
libquicktime-1.0.3-4.fc10.i386
The Desired Output is :
a2ps... (2 Replies)
I am in process of writing a library which can make any application of my product capable of creating core in the application's log folder with a product friendly core file name programatically. In my library I am registering for certain signals e.g. SIGILL, SIGFPE, SIGBUS, SIGSEGV, SIGSYS, SIGABRT... (1 Reply)
I am in process of writing a library which can make any application of my product capable of creating core in the application's log folder with a product friendly core file name programatically. In my library I am registering for certain signals e.g. SIGILL, SIGFPE, SIGBUS, SIGSEGV, SIGSYS, SIGABRT... (5 Replies)
Hey guys,
Suppose i run passwd via bash shell. It is a suid program, which temporarily runs as root(owner) and modifies the user entries.
However, when i write a C file and give 4755 permission and root ownership to the 'a.out' file , it doesn't run as root in bash shell. I verified this by... (2 Replies)
I had a question in my test which asked where suppose user B has a program with 's' bit set. Can user A run this program and gain root privileges in any way?
I suppose not as the suid program run with privileges of owner and this program will run with B's privileges and not root. (1 Reply)
Discussion started by: syncmaster
1 Replies
LEARN ABOUT V7
pidof
PIDOF(8) Linux System Administrator's Manual PIDOF(8)NAME
pidof -- find the process ID of a running program.
SYNOPSIS
pidof [-s] [-c] [-n] [-x] [-o omitpid[,omitpid..]] [-o omitpid[,omitpid..]..] program [program..]
DESCRIPTION
Pidof finds the process id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems
used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts are located in
/etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead.
OPTIONS -s Single shot - this instructs the program to only return one pid.
-c Only return process ids that are running with the same root directory. This option is ignored for non-root users, as they will be
unable to check the current root directory of processes they do not own.
-n Avoid stat(2) system function call on all binaries which are located on network based file systems like NFS. Instead of using this
option the the variable PIDOF_NETFS may be set and exported.
-x Scripts too - this causes the program to also return process id's of shells running the named scripts.
-o omitpid
Tells pidof to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro-
gram, in other words the calling shell or shell script.
EXIT STATUS
0 At least one program was found with the requested name.
1 No program was found with the requested name.
NOTES
pidof is actually the same program as killall5; the program behaves according to the name under which it is called.
When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is possible that
it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs. Note
that that the executable name of running processes is calculated with readlink(2), so symbolic links to executables will also match.
SEE ALSO shutdown(8), init(8), halt(8), reboot(8), killall5(8)AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl
01 Sep 1998 PIDOF(8)