just built a vm running fedora 30.  downloaded and compiled apache 2.4.41 but only partially working.  i have ssl configured but https doesn't work.  the log file shows mod_ssl/openssl present, initializing servers for ssl, configuring tls extension handling, shows the certificate and private key, conf file has it listening on 443 but using netstat only shows http.  no errors int he log, selinux is disabled.  can't figure out why this piece isn't working

Hello Ee,

I created a local repo for a CentOS 7.6 isolated instance with no internet, and copied a bunch of rpm files over from media to local directory . I created the proper repo file in /etc/yum.repos.d and pointed to the proper directory for the rpms, ran the createrepo ok . Question is , if I wish to add more rpms or delete rpms , how do I update/sync to show the newer packages and package count ? I tried 'yum clean all ' , no luck .

Hi tesseract OCR experts,

I’ve just installed tesseract on my Raspberry Pi running Linux (Raspbain) and I’m trying to extract text from PNG screen shots taken on my phone.  (I have hundreds of these screen shots, all in the same size & format, taken over the last year using the LeafSpy Lite app, for the Nissan LEAF EV, and I'll be extracting text from all of them.)

The problem I have is, some of the text is not being extracted.

When I run this command:
$ tesseract sample1.png sample1
It produces sample1.txt (attached), which includes plenty of useful figures, but it excludes:
-      “11.84V” near the bottom left (nice to have this voltage figure, but not vital), and
-      “32.0%” at the bottom (I really need this SOC figure).

I tried feeding tesseract a negative (created with IrfanView on Windows) of the image, in case it was a black/white issue, but that gave the same output.
I tried cropping the 11.84V and 32.0% figures out to TIF files (see sample1_voltage.tif & sample1_soc.tif attached, also created with IrfanView on Windows) then running them through tesseract, and that:
-      failed for the 11.84V (see empty sample1_voltage.txt attached), but
-      worked for the 32.0% (see sample1_soc.txt attached).

I know bash and Perl scripting.  I don’t know Python, but Python is installed so it could be used if necessary, if someone else writes the code, but it's not my preference.
ImageMagicK is also installed, in case I need to use it for cropping or whatever.…

Hi,

I'm using Chrony to configure the ntp client and it seems like every evening I keep losing the NTP synchronization which makes the time leap forward.

Sep 30 22:10:00 xxxxxxx chronyd[32710]: Forward time jump detected!
Sep 30 22:10:00 xxxxxxx chronyd[32710]: Can't synchronise: no selectable sources
Sep 30 22:13:13 xxxxxxx chronyd[32710]: Selected source 193.190.253.212
Sep 30 22:13:13 xxxxxxx chronyd[32710]: System clock wrong by -7439.358171 seconds, adjustment started
Sep 30 22:18:38 xxxxxxx  chronyd[32710]: Selected source 194.78.244.172

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Lists of NTP Servers I'm using:

server 0.be.pool.ntp.org iburst
server 1.be.pool.ntp.org iburst
server 2.be.pool.ntp.org iburst
server 3.be.pool.ntp.org iburst

restarting chrony resolves the issue, but it keeps happening

I'm having serious problems to make my kiosk printer (Nippon Primex NP-VK30) work correctly under Ubuntu 19.04.
The manufacturer provides no support for Ubuntu, but I've found on Github a very simple library made in Python.
I attached the Python files to this topic.

I tried to launch "test.py" and my printer worked fine!

Since I need to print some text strings from my C/C++ application, I would like to translate the python code into C/C++ code so I can easily import it in my original application.

Unfortunately, I'm just a beginner and I never coded in Python.
Can you help me, please?

Thank you!

This is the code for test.py:

#!/usr/bin/python
from w2k203dpi import Printer

p = Printer()

p.println('test')

p.bold(True)
p.println('test')
p.bold(False)

p.underline(True)
p.println('test')
p.underline(False)

p.qrcode('test')

p.fullcut()

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This is the code for the class file:

class Printer:

    def __init__(self):
        DEVPATH = '/dev/usb/lp0'
        self.f = open(DEVPATH, 'w')
        self.mode = 0x00

    def raw(self, data):
        for i in data:
           self.f.write(i)
        self.f.flush()

    def esc(self, data):
        self.raw('\x1b' + data)

    def font(self, value):
        if value:
            self.mode |= (1 << 0)
        else:
            self.mode &= ~(1 << 0)
        self.esc('!' + chr(self.mode))

    def bold(self, value):
        if value:
            self.mode |= (1 << 3)
        else:
         

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…

How do I check a history of commands executed by sudo?
I checked /home/username/.bash_history file but it contains only commands executed by the user.
I use RedHat 7.4. It's appreciate if I can know how to check sudo command history.

Hi,

We are moving from a HP-UX system to a Linux RedHat system.

We have some ansi C / proC programs running and I have troubles to get them compiled on the new system.

To get it compiled I had to remove some flags and commands because they are not available on the new compiler like:
gcc +s option
-D_HPUX_API_LEVEL=20040821 option
chatr +s enable ctpdb
-lsql11 became -lsqlplus

One error remains but I get it compiled eventually:
ctp_str.h:69:5: error: unknown type name ‘BOOLEAN’
     BOOLEAN ctp_maintain_gcns;

Eventually I get them compiled, but they crash every time the programs use a function that is extern (so not in the own *.pc member)
e.g. extern void ctp_gen_setup_test_flags
At runtime it just gives "memory fault"
Probably because I have no alternative for the chatr command and the +s flag...

Please advice on how I can get it compiled and running so that it is able to call the functions in external member.

I attach the original makefile that compiles the code on HP-UX, but not on linux, so that you can advice how the new makefile should look like.

Regards and thank you in advanced,
Tim

In fact this are really three question:
1.) is grep -f memory friendly? (so could I avoid writing any python code)
2.) Does somebody have already a working solution for below problem?
3.) Could you make suggestions or review my code as soon as it starts working.


I'm trying to find a solution, that works for really huge files. (will not  use more RAM if files have more lines)
The problem: identify all lines, that exist in the first file, but don't exist
in the second one. In none of the files the same line can occur twice

Here a small example:

file1 (f1.txt)

aba
abb
abd
abf
one
two
three
four
five
six
seven

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File2 (f2.txt)

abd
abe
eleven
four
eight
one
six

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The expected result (order is not relevant)

aba
abb
abf
five
seven
three
two

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I have already three approaches and an idea for the fourth one
1.) use grep -v -f f2.txt  f1.txt but I know nothing at all about memory consumption
2.) both files can be read into memory (so not suitable for huge files)
3.) the first file is huge the file fits into memory (so not suitable if the second file is huge)
4.) I'm working on it. In the moment the solution does not work as I didn't finish it. The idea es explained below

I have an idea of how to implement a solution, but wanted to know whether anybody has already written such code or knows of a standard solution.

My idea is to sort both files (the default linux sort is quite smart and ensures, that it works …

After running the CIS hardening script on our RHEL 7,
Mesosphere can't install at all : I don't have the error
message as app team & vendor working on it.

General questions:

Q1:
Besides logging a case with reseller/vendor (which often
disappoints, what's the fastest way to isolate/narrow
down which hardening item caused an issue?
Binary (ie harden half & then kept halving down) isolation
or google for the error?  

Q2:
Or are there free tools out there (in Tripwire we can quickly
tick/untick for remediation/auto-remediation) to ease this
isolation (esp for Linux & Windows)?

I've got a script located at:
/Users/me/Desktop/Distributed_Lab/Scripts

I'm trying to invoke the script using:  
./myscript.sh

When the script runs it gives me this message:
Desktop/cfrtl4_all_indexer_base: No such file or directory

A portion of my script is below:

#!/bin/sh
# ----- Variables -----
SHIP="xx.xxx.xx.xxx"
# ----- Script -----

# --- Search Head ---
sudo scp -r Desktop/Distributed_Lab/Apps/cfrtl4_all_indexer_base username@$SHIP:/tmp

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I'm initiating the script from my local system where I have administrative rights.  However, I've tried the scp command with sudo and without.  Same result.  It keeps giving me this message:

"Desktop/cfrtl4_all_indexer_base: No such file or directory"

Why is the message referring to only the Desktop/ as the path and not the entire path?  More importantly, it's not seeing the file that I need to move from my Apps directory.  I created this script to move about 10 files over from my Desktop/Distributed_Lab/Apps directory which is on my local drive, on to a remote systems /tmp directory.   Any help is greatly appreciated!

I've got a simple bash script (see below) that I am trying to run but it keeps choking on me for some reason.  It will make it as far as bringing the .tgz file down but when it try's to untar it, it will crap out.  I've checked permissions, those are fine.  

[code]#!/bin/sh

cd /opt

sudo yum install -y wget

sudo adduser splunk

sudo wget -O splunk-7.3.1-bd63e13aa157-Linux-x86_64.tgz 'https://www.splunk.com/bin/splunk/DownloadActivityServlet?architecture=x86_64&platform=linux&version=7.3.1&product=splunk&filename=splunk-7.3.1-bd63e13aa157-Linux-x86_64.tgz&wget=true'

sudo tar -xvzf /opt/splunk-7.3.1-bd63e13aa157-Linux-x86_64.tgz

sudo mv /tmp/cfrtl4_* /opt/splunk/etc/deployment-apps

sudo cp -avr /opt/splunk/etc/deployment-apps/cfrtl4_all_search_base /opt/splunk/etc/apps

sudo cp -avr /opt/splunk/etc/deployment-apps/cfrtl4_all_forwarder_outputs /opt/splunk/etc/apps

sudo cp -avr /opt/splunk/etc/deployment-apps/cfrtl4_full_license_server /opt/splunk/etc/apps

sudo cp -avr /opt/splunk/etc/deployment-apps/cfrtl4_search_volume_indexes /opt/splunk/etc/apps

sudo chown -R splunk:splunk splunk

sudo splunk/bin/splunk enable boot-start -user splunk --accept-license

sudo chown -R splunk:splunk splunk

sudo splunk/bin/splunk start/code]

Here is what the terminal shows where it is erroring out at:
[code]sudo ./cfrtl4_sh1.sh
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: repos-va.psychz.net
 * epel: …

Dear all
    What happens in NFS if 2 or more servers try to write the same file simultaneously

i have an iso of 18.04.3 desktop-amd64.iso.  how do i burn this to a dvd?  i've done it before but i forget.  i'm currently running ubuntu 16.04.