openwares.net

$ wget https://raw.githubusercontent.com/coreos/rkt/master/scripts/install-rkt.sh
$ chmod +x install-rkt.sh
$ sudo ./install-rkt.sh

$ sudo apt remove rkt --purge

$ ncat -l -p 2000 > /dev/null

$ dd if=/dev/zero bs=1024M count=1 ncat address_of_A 2000
1+0 records in
1+0 records out
1073741824 bytes transferred in 12.486022 secs (85995510 bytes/sec)

$ ncat -l -p 2000 pv > /dev/null

$ dd if=/dev/zero bs=256M pv ncat address_of_A 2000

$ iperf3 -s
Server listening on 5201

$ iperf3 -c ip_of_server

$ qmake -project
Project ERROR: Xcode not set up properly. You may need to confirm the license agreement by running /usr/bin/xcodebuild.
/opt/Qt/5.7/clang_64/mkspecs/features/mac/default_post.prf:35: Variable QMAKE_XCODE_VERSION is not defined.

isEmpty($$list($$system("/usr/bin/xcrun -find xcrun 2>/dev/null"))): \\

$ sudo -u tomcat8 soffice --accept="socket,host=0,port=8100;urp;StarOffice.ServiceManager" --headless --nofirststartwizard --nologo --nodefault --nocrashreport --nolockcheck &

\[Java framework\] Error in function createSettingsDocument (elements.cxx).
javaldx failed!
Warning: failed to read path from javaldx

$ sudo chown tomcat8:tomcat8 /usr/share/tomcat8

javaldx failed!
Warning: failed to read path from javaldx

(process:12586): dconf-CRITICAL **: 09:57:38.865: unable to create directory '/.cache/dconf': Permission denied. dconf will not work properly.

$ sudo systemctl stop tomcat9.service
$ sudo usermod --home /usr/share/tomcat9 tomcat
$ sudo chown tomcat /usr/share/tomcat9

sudo -u tomcat8 /usr/bin/tomcat soffice --accept="socket,host=0,port=8100;urp;StarOffice.ServiceManager" --headless --nofirststartwizard --nologo --nodefault --nocrashreport --nolockcheck &

max_connections = 100
max_prepared_transactions = 100

$ unset DISPLAY
$ ./soffice -nologo -headless -nofirststartwizard -accept="socket,host=0,port=8100;urp;tcpNoDelay;StarOffice.ServiceManager"

Warning: -nologo is deprecated. Use --nologo instead.
Warning: -headless is deprecated. Use --headless instead.
Warning: -nofirststartwizard is deprecated. Use --nofirststartwizard instead.
Warning: -accept=socket,host=0,port=8100;urp;tcpNoDelay;StarOffice.ServiceManager is deprecated. Use --accept=socket,host=0,port=8100;urp;tcpNoDelay;StarOffice.ServiceManager instead.

\[Unit\]
Description=LibreOffice service
After=syslog.target

\[Service\]
ExecStart=/usr/bin/soffice --accept="socket,host=0,port=8100;urp;StarOffice.ServiceManager" --headless --nofirststartwizard --nologo --nodefault --nocrashreport --nolockcheck
Restart=always
KillSignal=SIGQUIT
Type=simple
StandardError=syslog
NotifyAccess=all
User=tomcat8

\[Install\]
WantedBy=multi-user.target

$ sudo cp libreoffice.service /lib/systemd/system/
$ sudo systemctl enable libreoffice.service
Created symlink from /etc/systemd/system/multi-user.target.wants/libreoffice.service to /lib/systemd/system/libreoffice.service.
$ sudo systemctl start libreoffice
$ sudo netstat -anp grep 8100
tcp 0 0 0.0.0.0:8100 0.0.0.0:* LISTEN 9895/soffice.bin

#include <QApplication>
#include <QLabel>

int main(int argc, char** argv){
 QApplication app(argc, argv);

 QLabel lMsg("Hello QT5!");
 lMsg.show();

 return app.exec();
}

$ qmake -project
$ qmake 
$ make

hello.cpp:1:24: fatal error: QApplication: No such file or directory

QT += widgets

$ ./hello