set -A arr a1 a2 a3 a4
# START
ssh -xq $Server1 -l $Username /usr/bin/ksh <<-EOS
integer j=0
for loop in ${arr}
do
printf "array - ${arr}\n"
(( j = j + 1 ))
j=`expr j+1`
done
EOS
# END
=========
this is not giving me correct output.
I... (5 Replies)
I tried doing
ftp myhost <<HERE
username
password
quit
HERE
but it doesnt work. Why?
When I do ftp host, I always get prompted for username, and once I type that in I get prompted for password. But when I try doing it from here document it freezes. (2 Replies)
now running mac os x 10.53 and sudo chmod comes back with : operation not permitted.
sample file:
-rwxr-xr-x+ 1 1000 com.apple.monitor_all_services 276592 Jun 8 2007 342345.tif
i am running as root. (1 Reply)
Hi All,
i have a cron entry like
0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57 * * * * /amex/sssmonitor/dss_chk.ksh
and the script is like
#!/bin/ksh
file=`uname -n`
> /sunmast/projects/oasis/COREDEV/Dss$file.log
> /tmp/output_sss
today=`date`
varb=`ps -ef | grep... (5 Replies)
When I use sudo with ulimit there is an error but if I use ulimit without sudo there is no error.
In bash:
user1@debian:~$ sudo -u user2 -H ulimit -S -c unlimited
sudo: ulimit: command not found
user1@debian:~$
user1@debian:/home/user1$ ulimit -S -c unlimited
user1@debian:/home/user1$... (3 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 ... (0 Replies)
Can we use a here document inside a here document?
Something like this
ssh user@remotehost << REMOTE
sudo vserver vsernamename enter << VSERVER
perform actions on vserver.
VSERVER
REMOTE (6 Replies)
This is the first time for using sudo for me.
# visudo
## Allows people in group admin to run all commands
%admin ALL=(ALL) ALL
# groupadd admin
# useradd temp
# usermod -a -G admin temp
# id temp
uid=506(temp) gid=506(temp) groups=506(temp),507(admin)
#
#sudo... (5 Replies)
Hi All, im a bit new to Solaris 10 iv been working on Redhat and cant seem to get the sudo working on Solaris 10:D
Iv installed the below packages via pkgadd command:
gcc-4.7.2-sol10-x86-local
libiconv-1.14-sol10-x86-local
libintl-3.4.0-sol10-x86-local
sudo-1.8.13-sol10-x86-local
... (1 Reply)
H Forum,
I was thankful in getting help from this post that allowed me to connect to multiple severs at once using here documents to gather data into variables. But I've discovered that the same bash command that works on my RHEL 7 servers do not work on RHEL 6? What's strange about my... (4 Replies)
Discussion started by: greavette
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)