Yeh, still haven't got to the bottom of it, think I'll sleep on it and see if I can come up with some inspiration...
I have seen some sudo failures in nohup.out where it is prompting for a password. Not sure why as it doesn't from the command line. Seems to write to it when I am trying to exit. Hmmm. Perhaps sudo is buffering......
The chain of events is I call a script I have set up in sudo file to run as root with no password.
That in turn calls another file that has several echos to stdout, (should be redirected?)
That file finally launches a java app. JSystem agent.
I am trying to submit background jobs using the nohup command on a client system where my session is running under a "master shell" (BASH). If I try to nohup the actual job (ie: nohup MYJOB.BAT > MYJOB.LOG 2>&1 &) the command will fail with a return code of 126 and a "permission denied" message.... (0 Replies)
While executing a ksh file with a input parameter in background like the following
bash-2.03$nohup fil.ksh 4 &
the nohup session is stopped.
The same ksh file while executed like
bash-2.03$fil.ksh 4
works fine.
I am trying the above in Solaris 5.8 in bash shell. Please let me... (2 Replies)
Hello folks,
I have got a script which telnets to different boxes and runs a certain script with 3 run time args.
The line from the script which does it is:
(sleep 1; echo $USERID ; sleep 1; echo $PASSWD ; sleep 1 ; echo y ; sleep 1 ; echo "\r" ; sleep 1 ; echo "cd $FILEPATH" ; sleep 1 ; sleep 1... (1 Reply)
Hi,
I am kinda confused with this, am not sure what is happening
i have a script say test.sh
----------
cat myfile | while read line
do
exit 2
done
echo "out of loop"
-----------
as it is evident, the exit should cause the script to terminate ,hence producing no output for the... (1 Reply)
Hello
I am running this script inst.sh
#!/bin/ksh
sqlplus -s username/password @temp.sql
----Here is my temp.sql
set serveroutput on
select instance_name from V$instance;
exit
When i run the script inst.sh on the command prompt...it runs fine...but
when i run it using... (5 Replies)
There is a daemon which is constantly writing to this particular nohup.out file.This daemon can't be stopped. But the large size of this file is hampering the directory space.I want to write a script which will wait for 48 hours and then delete the contents of the file ( nohup.out ), but not the... (1 Reply)
Hi, but it is possible to effect a sftp in???
thanks thousand
Germanico
---------- Post updated at 07:01 AM ---------- Previous update was at 05:51 AM ----------
Hi, but it is possible to effect a sftp in nohup mode??? (2 Replies)
I am trying to execute following code:
alarm_file_array="test1.alarms test2.alarms test3.alarms test4.alarms"
for file in ${alarm_file_array}
do
nohup tail -f $file |awk 'NR>10' >> output.alarms 2>/dev/null &
done
Whenever it tries to execute nohup command it hangs because of the... (3 Replies)
Shell : bash
OS : Oracle Linux 6.4
I want to save the ouput of a nohup command to file other than nohup.out . Below are my 3 attempts.
For both Attempt1 and Attempt2 , the redirection logs the output correctly to the output file. But I get the error "ignoring input and redirecting stderr to... (7 Replies)
Hi
I need to execute about 1000 scp commands sequential , so I made "scp.sh" - like this
scp - rp ...
scp - rp ...
............
scp - rp ...
then I run
nohup sh scp.sh &The problem is: nohup process stopped when I closed session, or when the session expired,... Something wrong :(:(:(
... (4 Replies)
Discussion started by: bobochacha29
4 Replies
LEARN ABOUT LINUX
sudo_root
sudo_root(8) System Manager's Manual sudo_root(8)NAME
sudo_root - How to run administrative commands
SYNOPSIS
sudo command
sudo -i
INTRODUCTION
By default, the password for the user "root" (the system administrator) is locked. This means you cannot login as root or use su. Instead,
the installer will set up sudo to allow the user that is created during install to run all administrative commands.
This means that in the terminal you can use sudo for commands that require root privileges. All programs in the menu will use a graphical
sudo to prompt for a password. When sudo asks for a password, it needs your password, this means that a root password is not needed.
To run a command which requires root privileges in a terminal, simply prepend sudo in front of it. To get an interactive root shell, use
sudo -i.
ALLOWING OTHER USERS TO RUN SUDO
By default, only the user who installed the system is permitted to run sudo. To add more administrators, i. e. users who can run sudo, you
have to add these users to the group 'admin' by doing one of the following steps:
* In a shell, do
sudo adduser username admin
* Use the graphical "Users & Groups" program in the "System settings" menu to add the new user to the admin group.
BENEFITS OF USING SUDO
The benefits of leaving root disabled by default include the following:
* Users do not have to remember an extra password, which they are likely to forget.
* The installer is able to ask fewer questions.
* It avoids the "I can do anything" interactive login by default - you will be prompted for a password before major changes can happen,
which should make you think about the consequences of what you are doing.
* Sudo adds a log entry of the command(s) run (in /var/log/auth.log).
* Every attacker trying to brute-force their way into your box will know it has an account named root and will try that first. What they do
not know is what the usernames of your other users are.
* Allows easy transfer for admin rights, in a short term or long term period, by adding and removing users from the admin group, while not
compromising the root account.
* sudo can be set up with a much more fine-grained security policy.
* On systems with more than one administrator using sudo avoids sharing a password amongst them.
DOWNSIDES OF USING SUDO
Although for desktops the benefits of using sudo are great, there are possible issues which need to be noted:
* Redirecting the output of commands run with sudo can be confusing at first. For instance consider
sudo ls > /root/somefile
will not work since it is the shell that tries to write to that file. You can use
ls | sudo tee /root/somefile
to get the behaviour you want.
* In a lot of office environments the ONLY local user on a system is root. All other users are imported using NSS techniques such as
nss-ldap. To setup a workstation, or fix it, in the case of a network failure where nss-ldap is broken, root is required. This tends to
leave the system unusable. An extra local user, or an enabled root password is needed here.
GOING BACK TO A TRADITIONAL ROOT ACCOUNT
This is not recommended!
To enable the root account (i.e. set a password) use:
sudo passwd root
Afterwards, edit the sudo configuration with sudo visudo and comment out the line
%admin ALL=(ALL) ALL
to disable sudo access to members of the admin group.
SEE ALSO sudo(8), https://wiki.ubuntu.com/RootSudo
February 8, 2006 sudo_root(8)