Setuid not working in Linux as script fails to write to file. Post: 302826099

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Need to write a home-grown backup script for Linux

I am researching ways in which to backup files or whole file systems for backup to another system. We are using Suse Linux 7.0 with no tape backup devices or secondary disks. What utilities would be the best to use for a simple yet flexible script for backup purposes? tar, cpio, compress.

2. Shell Programming and Scripting

log file when the script fails !

i have a script that will retrive some info from database. The script is working fine but i have to add new feature in it when the script fails or retrive null result it should reflect in the log file. below the script AMR_Inactive.sh while read i do connect1=`sqlplus -silent...

3. IP Networking

read/write,write/write lock with smbclient fails

Hi, We have smb client running on two of the linux boxes and smb server on another linux system. During a backup operation which uses smb, read of a file was allowed while write to the same file was going on.Also simultaneous writes to the same file were allowed.Following are the settings in the...

4. UNIX for Advanced & Expert Users

when a process fails to write to /dev/log

Hi , when a process fails to write to /dev/log ?

5. UNIX for Dummies Questions & Answers

a problem with write a script in Linux version 2.4.27-ubnt0

Hello everyone, I have a radio wireless called UBNT Nanostation5 It has this linux OS:Linux version 2.4.27-ubnt0 When i want to write a script in ssh, i get some errors The script is: ifconfig eth0 down ifconfig eth0 hw ether 00:15:6D:**:**:** ifconfig eth0 up cfg -x echo...

6. Shell Programming and Scripting

Need help! command working ok when executed in command line, but fails when run inside a script!

Hi everyone, when executing this command in unix: echo "WM7 Fatal Alerts:", $(cat query1.txt) > a.csvIt works fine, but running this command in a shell script gives an error saying that there's a syntax error. here is content of my script: tdbsrvr$ vi hc.sh "hc.sh" 22 lines, 509...

7. Red Hat

process fails if setuid bit is set

Hi, OS : Linux I have an executable (P1) owned by user say "abcd" and the setuid bit is set. And there is another executable (P2) which brings up the process (P1). When the setuid bit is set, the process P1 is failing, if the setuid bit is not set there is no issue. I was wondering if...

8. UNIX for Beginners Questions & Answers

Linux shell | how to exit a script if any command fails.

Hi, i am new here let me say HI for all. now i have a question please: i am sending one command to my machine to create 3 names. if one of the names exists then the box return error message that already have the name but will continue to create the rests. How i can break the command and...

9. UNIX for Beginners Questions & Answers

What keeps me from abusing setuid(0) and programs with setuid bit set?

Just learning about the privilege escalation method provided by setuid. Correct me if I am wrong but what it does is change the uid of the current process to whatever uid I set. Right ? So what stops me from writing my own C program and calling setuid(0) within it and gaining root privileges ? ...

LEARN ABOUT LINUX

nwclient

NWCLIENT(5)							     nwclient							       NWCLIENT(5)

NAME

       nwclient - configuration file for NWClient program suite

DESCRIPTION

       This manual page describes the rather simple format of the file $HOME/.nwclient, the configuration file for the NWClient program suite.

FILE FORMAT

       The  file  $HOME/.nwclient  consists  of  several  lines, each describing a NWClient connection. Lines beginning with # and empty lines are
       ignored as comments.

       Because you can store passwords in .nwclient, the user programs will only scan .nwclient when only the file owner has access rights to  the
       file. The file must be have permissions 0600.

       To  specify  a  NWClient connection, the name of the file server, the user name to be used and a password is necessary. The server name and
       the user name are specified as SERVER/USER, and the password is separated by a blank. The password field can be omitted. In this  case  the
       user programs will ask you for a password. If you specify the password to be just a dash, then no password is used.

       The  first  valid  specification  has a special meaning: If the user does not name a server on the command line, the first specification is
       used as a 'preferred connection'.

       An example might be the following:

	  # The preferred connection, the user is asked
	  # for a password
	  FS311/ME
	  # And a passwordless account on another server
	  CD-SERV/GUEST -

       With these lines in $HOME/.nwclient, calling 'ncpmount /mnt' will mount the the file server FS311 with user name ME on  /mnt  after  asking
       the user for a password.

       ncpmount -S cd-serv /cd will silently mount the server cd-serv on /cd.

       nprint,	pqlist and other user programs that require a valid login also look up $HOME/.nwclient to find a file server, a user name and pos-
       sibly a password.

       Please note that the access permissions of .nwclient MUST be 600, for security reasons.

SEE ALSO

       ncpmount(8), ncpumount(8), slist(1), pqlist(1), nprint(1)

nwclient							    12/27/1995							       NWCLIENT(5)