Guys,
I've a problem in the "sed" command used in my shellscripts
This is the problamatic line in my shell script:
sed -e 's/${line1}/${line1_m}/g' prod_hier_1234.txt > test.txt
It doesn't do the job of replacing the string stored in variable 'line1' to 'line1_m'.
However If I replace the... (10 Replies)
Hi All,
I am tring to redirect mails comming to my user id to a script. In other word trigger a script when a mail comes to my user id.
Actually , Admin team has done all this to me previously. in my script i am doing like
/usr/local/bin/sudo -u parbrxs /export/home/parbrxs/bin/parbrxs.sh... (4 Replies)
Hi Guru's,
I 'm trying to execute the below given script in Unix. I am having an issue with the script. The output of the script is given below:
#!/bin/bash
File_Home="/home/essftp/Risk"
cd /home/essftp/Risk
rm -f FileList
rm -f credit_risk*
file1=`ls -lt... (4 Replies)
Hi All,
I have developed below script for FTP a file from unix machine to another machine.
ftpToABC ()
{
USER='xyz'
PASSWD='abc'
echo "open xx.yy.zbx.aaa
user $USER $PASSWD
binary
echo "put $1 abc.txt" >> /home/tmp/ftp.$$
echo "quit" >> /home/tmp/ftp.$$
ftp -ivn <... (3 Replies)
Guys,
I have a script that should change one of the configuration Parameter in a http accelerator, this config change which will halt http traffic into device. So I have designed a script which should do these changes. But after executing this script, found that one of the input variable is not... (8 Replies)
I'm new to shell programming, and am having a problem in a (Korn) shell program, which boils down to this:
The program reads a record from an input file and then uses a series of
"cut" commands to break the record into parts and assign the parts to
variables. There are no delimiters in the... (2 Replies)
I want to execute a script(generateReport.sh) which resides on root home directory from shell script(localtrigger.sh) as root by using sudo.
The thing is
i cant edit /etc/sudoers (i can but m not allowed to do it , ethically)
i cant change ownership of generateReport.sh script
When i try... (7 Replies)
Hi,
I have used expr command to increment the date.
for e.g.,
case 1 :
echo $(date -d $(echo `expr 20010101 + 1`))
it returns
Tue Jan 2 00:00:00 IST 2001
case 2:
echo $(date -d $(echo `expr 20010101 - 1`))
it returns
date: invalid date `20010100'
please suggest me, how to... (3 Replies)
Hi,
I have a problem with the command mount with a password with special character
mount -t smbfs '//itransfert_cs:password@IP/itransfert/1-Arrivees/Vers_K2' /share
the password contain a * and a @
I try to quote but don't work, replace the @ with %40 and try to escape with \ but... (8 Replies)
Discussion started by: protocomm
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)