d#Desktop /cygdrive/c/users/test/otherfolder
$ cygstart --action=runas ping -c 1 www.google.com | grep 'bytes from' | cut -d
= -f 4
Unable to start 'ping': The operating system denied access to the specified file
.
d#Desktop /cygdrive/c/users/test/otherfolder
$
I am trying to run some scripts on cygwin, but I can't get those script running for some reasons. I tried to run as administrator, I also tried using cygstart --action=runas, but nothing seems to work. Any idea?
chmod 755 ping to set the permissions of the file. Should work.
Related
I'm a beginner in Linux scripting. Somehow I can't get the right search string to find the answer.
I want to run a script relative to a specific user's directory like:
~user/rel/path/to/script.sh
but I don't know what "~user" will translate to. It may even contain spaces. Should I quote it? And if so, how? I always get the file or folder does not exist error when I try to use quotes.
Edit
This is not a duplicate I think.
My concern was that running the following with quotes:
"~user/rel/path/to/script.sh"
gives me "file or folder not found" error. But I don't know, what ~user will translate to. (The script will be called on many different computers. The username is given but the home directory may be changed freely by the owner of each computer.) So I was afraid (as a Linux scripting BEGINNER!!!) to run it without quotes like:
~user/rel/path/to/script.sh
The most down-voted answer (Java system properties and environment variables) actually helped me most. I just needed to confirm that it works the same way on Linux. So I installed a test VM in VirtualBox and tried:
cd /
sudo mkdir -p "test home dir/myuser"
sudo adduser myuser
sudo chown myuser:myuser "test home dir/myuser"
sudo usermod -d "/test home dir/myuser" myuser
su myuser
cd ~
echo '#!/bin/bash -x
echo "here!"
' > test.sh
chmod +x test.sh
exit
cd /
~myuser/test.sh
And it worked!
On Mac OS you don't need to quote. I'm not sure about Linux. However, if
ls ~user
would result in /dir with space/user/ then
sh ~user/rel/path/to/script.sh
would be
sh /dir\ with\ space/user/rel/path/to/script.sh
and this executes if you have set the execution flag on script.sh accordingly.
We have linux script in our environment which does ssh to remote machine with a common user and copies a script from base machine to remote machine through scp.
Script Test_RunFromBaseVM.sh
#!/bin/bash
machines = $1
for machine in $machines
do
ssh -tt -o StrictHostKeyChecking=no ${machine} "mkdir -p -m 700 ~/test"
scp -r bin conf.d ${machine}:~/test
ssh -tt ${machine} "cd ~/test; sudo bash bin/RunFromRemotevm.sh"
done
Script RunFromRemotevm.sh
#!/bin/bash
echo "$(date +"%Y/%m/%d %H:%M:%S")"
Before running Test_RunFromBaseVM.sh script base vm we run below two commands.
eval $(ssh-agent)
ssh-add
Executing ./Test_RunFromBaseVM.sh "<list_of_machine_hosts>" getting permission denied error.
[remote-vm-1] bin/RunFromRemotevm.sh:line 2: /bin/date: Permission denied
any clue or insights on this error will be of great help.
Thanks.
I believe the problem is the presence of the NOEXEC: tag in the sudoers file, corresponding to the user (or group) that's executing the "cd ~/test; sudo bash bin/RunFromRemotevm.sh" command. This causes any further execv(), execve() and fexecve() calls to be refused, in this case it's /bin/date.
The solution is obviously remove the NOEXEC: from the main /etc/sudoers file or some file under /etc/sudoers.d, whereever is this defined.
I try to sudo run a local script over ssh,
ssh $HOST < script.sh
and I tried
ssh -t $HOST "sudo -s && bash" < script.sh
Actually, I searched a lot in google, find some similar questions, however, I don't find a solution which can sudo run a local script.
Reading the error message of
$ ssh -t $HOST "sudo -s && bash" < script.sh
Pseudo-terminal will not be allocated because stdin is not a terminal.
makes it pretty clear what's going wrong here.
You can't use the ssh parameter -t (which sudo needs to ask for a password) whilst redirecting your script to bash's stdin of your remote session.
If it is acceptable for you, you could transfer the local script via scp to your remote machine and then execute the script without the need of I/O redirection:
scp script.sh $HOST:/tmp/ && ssh -t $HOST "sudo -s bash /tmp/script.sh"
Another way to fix your issue is to use sudo in non-interactive mode -n but for this you need to set NOPASSWD within the remote machine's sudoers file for the executing user. Then you can use
ssh $HOST "sudo -n -s bash" < script.sh
To make Edward Itrich's answer more scalable and geared towards frequent use, you can set up a system where you only run a one line script that can be quickly ported to any host, file or command in the following manner:
Create a script in your Scripts directory if you have one by changing the name you want the script to be (I use this format frequently to change 1 word for my script name and create the file, set permissions and open for editing):
newscript="runlocalscriptonremotehost.sh"
touch $newscript && chmod +x $newscript && nano $newscript
In nano fill out the script as follows placing the directory and name information of the script you want to run remotely in the variable lines of runlocalscriptonremotehost.sh(only need to edit lines 1-3):
HOSTtoCONTROL="sudoadmin#192.168.0.254"
PATHtoSCRIPT="/home/username/Scripts/"
SCRIPTname="scripttorunremotely.sh"
scp $PATHtoSCRIPT$SCRIPTname $HOSTtoCONTROL:/tmp/ && ssh -t $HOSTtoCONTROL "sudo -s bash /tmp/$SCRIPTname"
Then just run:
sh ./runlocalscriptonremotehost.sh
Keep runlocalscriptonremotehost.sh open in a tabbed text editor for quick updating, go ahead and create a bash alias for the script and you have yourself an app-ified version of this frequently used operation.
First of all divide your objective in 2 parts. 1) ssh to the host. 2) run the command you want as sudo. After you are certain that you can 1) access the host and 2) have sudo privileges then you can combine the two commands with &&. What x_cmd && y_cmd does is that the y_cmd gets executed after x_cmd has exited successfully.
I'm trying to start tomcat in such a way that it writes standard out to a text file.
I'm do this but I get a permission denied. Why is that?
[rob#machine1 bin]$ pwd
/usr/lib64/apache-tomcat-6.0.36/bin
[rob#machine1 bin]$ sudo ./startup.sh > console.log 2<&1
bash: console.log: Permission denied
Redirections are done by the current shell, which does not have sudo rights. When you want to write to console.log, you run sudo on a shell that can in turn do redirections:
sudo sh -c './startup.sh > console.log 2>&1'
Remarks:
I switched the direction of 2<&1 into 2>&1.
You might want to include the redirections in your own startup script.
I configured cygwin in Windows Server 2008, now we need to implement automation
I am writing a batch script to add user to cygwin\etc\passwd file using following command
mkpasswd -l -u %username% -p /home >> /etc/passwd
Please help me how to execute following cmd in batch file
echo off
C:
chdir C:\cygwin\bin
bash --login -i
mkpasswd -l -u %username% -p /home >> /etc/passwd
It's not working
You're mixing Windows and Unix in your windows batch file. The batch file is running as a Windows command, as is the mkpasswd command in it. Windows has no concept of /etc/passwd and will throw an error. Probably something like;
D:\cygwin\bin>mkpasswd -l -u testusr -p /home >> /etc/passwd
The system cannot find the path specified.
Given what you want to do with mkpasswd I'd suggest you find a way to run your automation from within Cygwin. Perhaps setting up a cron job.