Utkonos's questions

In Kibana's GUI settings page, there is an entry called "Hide announcements" with the field named hideAnnouncements.

The URL path for this page is /app/management/kibana/settings

Then in the documentation for the YAML config file there is an entry newsfeed.enabled.

If newsfeed.enabled is set to false, the hide announcements setting in the GUI does not change.

Is there a kibana.yml setting that controls hideAnnouncements?

It isn't clear exactly what more needs to be escaped in the following macro to allow it to be used with awk or sed on FreeBSD.

define(`RELAY_MAILER_ARGS', `TCP $h 2525')dnl

Here is an awk command that attempts to insert the above line at line 90 below the SMART_HOST configuration.

awk 'NR==90 { print "define(\`RELAY_MAILER_ARGS\', \`TCP $h 2525\')dnl"}1' example.com.mc

The command results in the following error:

Unmatched '"'.

Note to future editors: the backtick/single quote is not a typo. This is an ancient quirk of the m4 language that is used to write the macros for Sendmail configuration: "m4 uses single quotes (opening "`" and closing "'") to quote arguments"

Additional Note: Octal escapes don't seem to work when using sed on FreeBSD. In that situation, use the xNN escaped hexadecimal characters in that situation.

This is a plain vanilla fresh install of FreeBSD 13.1. The resolv.conf file is as follows and Unbound is not enabled.

nameserver 192.0.2.1

DNS resolution on the local machine is ignoring /etc/hosts. What is missing from the configuration?

I am trying to automatically set the root password to random characters via bash script. The script is part of a Vagrant shell provisioner. If the script runs the password change only, I am able to login to the instance just fine. I can then reboot the instance. After the reboot, I am still able to login using that same password as root.

However, if I include a reboot at the very end of the shell provisioner script, after the reboot, login fails with that password as root.

What is happening when there is a login before the reboot that uses the new password? What else can I include in the script so that the password set is able to be used after the reboot?

Here is the Vagrant install script install.sh. It generates an eight character password, prints it to stdout so it can be read from the Vagrant output after vagrant up, and redirects it to chpasswd. There is no problem with this command: it works just fine if I login once before the reboot. It just gets wiped by something if the reboot is part of the script like below.

#!/bin/bash
echo "root:$(cat /dev/urandom | tr -dc '[:alnum:]' | fold -w ${1:-8} | head -n 1)" | tee >( chpasswd )
reboot

Here is the line in the Vagrantfile for the shell provisioner:

config.vm.provision 'shell', path: 'install.sh'

Here are two diagrams:

Trying to create a simple netcat responder:

The "server" would be:

$ while true; do { ./secret.sh; } | sudo netcat -k -q -1 -l 123; done

secret.sh is:

#!/bin/bash
read line
if [ "$line" == "open" ]; then
    echo "sesame"
fi

And the client connection:

$ echo "open" | netcat localhost 123

It's not working as expected. What can be changed to make this work?

After reading some feedback elsewhere, the following changes were suggested:

mkfifo /tmp/pipe
while true; do { cat /tmp/pipe | ./secret.sh 2>&1; } | netcat -kv -lp 123 > /tmp/pipe; done

This works, but it only responds with the results from secret.sh the first time. Subsequent connections with the correct string don't get the expected response. I'm getting closer, however.

I am trying to start firefox headless. The following is the beginning of the shell script that starts it:

#!/bin/sh
Xvfb :99 >/dev/null 2>&1 &
XVFB=$!
sleep 3
firefox --display=:99 >/dev/null 2>&1 &
FIREFOX=$!

When this script is run, the following error occurs:

Xlib:  extension "RANDR" missing on display ":99".

I have tried starting Xvfb with the following, but it does not prevent the error:

Xvfb -extension RANDR :99 >/dev/null 2>&1 &

and

Xvfb +extension RANDR :99 >/dev/null 2>&1 &

Is there a better way to enable XRandR in Xvfb so that firefox is able to see the extension?

Alternatively, is there a way to disable XRandR in firefox?

I'm trying to build my fstab during install with a script, so I want to have something like this:

printf '# Device\t\tMountpoint\tFSType\tOptions\t\tDump\tPass#' >> /mnt/etc/fstab
printf '\n/dev/ada0p4.elia\t/\t\tufs\trw\t\t1\t2' >> /mnt/etc/fstab
printf '\n/dev/ada0p3.eli\t\tnone\t\tswap\tsw\t\t0\t0' >> /mnt/etc/fstab
printf '\n/dev/ada0p2\t\t/unencrypted\tufs\tro\t\t1\t1' >> /mnt/etc/fstab

Is there a way to do this in csh with echo?

I have tried and it's not working properly. For example, here is a test and the output on my FreeBSD 9.0-RELEASE-p1 box:

# echo test\ttest > test
# cat test
testttest

What is going wrong here?

I'm specifically asking about FreeBSD. I am using the default /bin/csh as my shell. There is a binary version of echo at /bin/echo, and there is an echo command built into the shell. The system command lacks the ability to use System V style backslashed escape characters such as:

\n
\t

I want to be able to prefer the shell's builtin rather than the system command without making a temporary change to path or deleting /bin/echo.

I am using a Kubuntu 11.10 client with a FreeBSD 9.0 server.

The server has the following lines in /etc/rc.conf

nfs_server_enable="YES"
nfsv4_server_enable="YES"
nfsuserd_enable="YES"

and the following in /etc/exports

V4: /
/

I am not using any type of security other than the default sys to keep this config as simple as possible.

From the client, both of these commands successfully mount the exported NFS share:

$ sudo mount -t nfs test.home:/ /mnt
$ sudo mount -t nfs4 test.home:/ /mnt

What can I do on the server end to disable NFSv3 and below so that the following does not work?

$ sudo mount -t nfs test.home:/ /mnt