10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi All,
Good Day, seeking for your assistance on how to not perform my 2nd, 3rd,4th etc.. function if my 1st function is in else condition.
#Body
function1()
{
if
then
echo "exist"
else
echo "not exist"
}
#if not exist in function1 my all other function will not proceed.... (4 Replies)
Discussion started by: meister29
4 Replies
2. Web Development
Here is the first draft PHP function to check badges:
<?php
function check_badges($color, $uid, $limit = 300, $_DEBUG = true)
{
/*
* check_badges() version 0.1 by Neo 9 Jan 2019
* $_COOKIE is not used in this server-side code
* but may be used in the browser. ... (0 Replies)
Discussion started by: Neo
0 Replies
3. Shell Programming and Scripting
Not sure where the problem is. I can run the script without any issue using the following command.
. /opt/app/scripts/cdc_migration.sh
But it fails with the below error when I try it this way
/opt/app/scripts/cdc_migration.sh
/opt/app/scripts/cdc_migration.sh: line 65: return: can only... (1 Reply)
Discussion started by: svajhala
1 Replies
4. Programming
I'm not that acquainted to C programming and would like to know how to obtain the internal Unix userid of a user (I'm on HP UX) and stro it in a variable.
I found the getuid() fonction returns the current user's internal ID. But I would like to find it for a different user. I was hoping... (7 Replies)
Discussion started by: rm-r
7 Replies
5. Programming
I have a class called Parsing with the following function. I want to create a wrapper for it, so that I call it using GetReal rather than GetFloat.
Bit confused on how to do this.
class Parsing {
private:
int Length; //
int Ptr; ... (3 Replies)
Discussion started by: kristinu
3 Replies
6. Shell Programming and Scripting
I have two scripts. script1.sh looks
--------------------------------
#!/bin/bash
display()
{
echo "Welcome to Unix"
}
display
-----------------------------
Script2.sh
#!/bin/bash
sh script1.sh //simply calling script1.sh
------------------------------ (1 Reply)
Discussion started by: mvictorvijayan
1 Replies
7. Shell Programming and Scripting
I am using ksh. I want to know how can we make any function to return string or double value.
I dont want to use the global variables. (5 Replies)
Discussion started by: PRKS
5 Replies
8. UNIX for Dummies Questions & Answers
Hi All,
Can anyone please let me know the syntax / how to pick up the Return Code ( RC) from the mailx command and return it to SAS uisng 'system()' function and '${?}'.
I am in a process to send the mail automatically with an attachment to bulk users. I have used 'Mailx' and 'Unencode'... (0 Replies)
Discussion started by: manas6
0 Replies
9. Shell Programming and Scripting
Hi
I have a doubt in the way the variables inside a function are treated .
if a function is called from the main script directly, the variables inside them act as global variables.
however if the return value of the function is stored to some other variable in the main script as shown,... (3 Replies)
Discussion started by: prez
3 Replies
10. UNIX for Dummies Questions & Answers
hi guys,
I have a requirement to run a script 4 times with different parameter values.
the 4 jobs have to run parallely which actually access different data of same table and deletes.
how can i achieve this.................?
Thanks in advance (1 Reply)
Discussion started by: chiru
1 Replies
SETUID(2) Linux Programmer's Manual SETUID(2)
NAME
setuid - set user identity
SYNOPSIS
#include <sys/types.h>
#include <unistd.h>
int setuid(uid_t uid);
DESCRIPTION
setuid() sets the effective user ID of the calling process. If the effective UID of the caller is root, the real UID and saved set-user-ID
are also set.
Under Linux, setuid() is implemented like the POSIX version with the _POSIX_SAVED_IDS feature. This allows a set-user-ID (other than root)
program to drop all of its user privileges, do some un-privileged work, and then reengage the original effective user ID in a secure man-
ner.
If the user is root or the program is set-user-ID-root, special care must be taken. The setuid() function checks the effective user ID of
the caller and if it is the superuser, all process-related user ID's are set to uid. After this has occurred, it is impossible for the
program to regain root privileges.
Thus, a set-user-ID-root program wishing to temporarily drop root privileges, assume the identity of an unprivileged user, and then regain
root privileges afterwards cannot use setuid(). You can accomplish this with seteuid(2).
RETURN VALUE
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
ERRORS
EAGAIN The uid does not match the current uid and uid brings process over its RLIMIT_NPROC resource limit.
EPERM The user is not privileged (Linux: does not have the CAP_SETUID capability) and uid does not match the real UID or saved set-user-ID
of the calling process.
CONFORMING TO
SVr4, POSIX.1-2001. Not quite compatible with the 4.4BSD call, which sets all of the real, saved, and effective user IDs.
NOTES
Linux Notes
Linux has the concept of file system user ID, normally equal to the effective user ID. The setuid() call also sets the file system user ID
of the calling process. See setfsuid(2).
If uid is different from the old effective uid, the process will be forbidden from leaving core dumps.
SEE ALSO
getuid(2), seteuid(2), setfsuid(2), setreuid(2), capabilities(7), credentials(7)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2010-02-21 SETUID(2)