Well, if you have access to sudo as root, you can modify the sudoers file:
Code:
sudo visudo
Or, like I said, you can just modify the root crontab:
Code:
sudo crontab -e
If you don't have access to the root account and sudo is not working for you, then you will not be able to run root commands until someone with proper privileges gives you access.
Hello,
I have written a script that has a sudo command to change file permissions within it.
When I run the script manually, the sudo command inside of it works fine.
When the script is run through crontab I get the error "cron: not found".
It the same user profile that I am using... (6 Replies)
Hi All,
I have scheduled a script in cron which writes output to the below file.
....>> /data/Target/wrapper_invoke_ds_job_`date '+%Y%m%d'`.ksh_out 2>&1
But the date command is not getting resolved in the format specified. It just resolves to the following.
wrapper_invoke_MQ_ds_job_Tue... (3 Replies)
Legends,
I am trying sudo chmod from one shell to different machine. but getting the error.
Please let me know if there is any way to do this.
A#pk} for i in Bl1 Brl1
>> do
>> echo $i
>> ssh $i sudo chmod 755 /etc/services
>> done
Bl1
Password:
bash: sudo: command not found
... (2 Replies)
Have a sudo statement inside of a here document. It prompts me for a password, but doesnt wait for me to enter my password. Is there a way I can use the command without sudo or anyway that I can enter the password correctly?
Eg :
while read remotehost
do
ssh -t $2@$remotehost <<REMOTE... (13 Replies)
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... (4 Replies)
Hello,
I am facing a very strange problem when I run my script manuallu ./Fetchcode which is using to connect with MKS integrity from linux end it workks fine but when I run it from cron it doesn't work.Can someone help me
1) How could I check my script when it is running from cron like... (3 Replies)
Help. My script is working fine when executed manually but the cron seems not to catch up the command when registered.
The script is as follow:
#!/bin/sh
for file in file_1.txt file_2.txt file_3.txt
do
awk '{ print "0" }' $file > tmp.tmp
mv tmp.tmp $file
done
And the cron... (2 Replies)
I have a script that has to execute a read command in a function, this is in an ash busybox.
The code is...
trapcatch () { echo "Ctl-c Detected, what do you want to do?"
echo "Please choose the number of one of the following options"
echo "1. Jump past this Set"
echo "2. Exit... (8 Replies)
the following unix command gives me the number of records avaiable in my application
/navs/sys/appl/bin/record list
This gives number of rows and colums. I want to generate one text file everyday at 6:10 AM using cron
So I added following entery into crontable
#Generate record file at... (6 Replies)
Hi,
I am a bit confused ,why would a sed command work fine outside of ksh script but not inside.
e.g
I want to replace all the characters which end with a value and have space at end of it.
so my command for it is :
sed -i "s/$SEPARATOR /$SEPARATOR/g" file_name
This is working fine in... (8 Replies)
Discussion started by: vital_parsley
8 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)