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benjamin button's questions

Martin Hope
benjamin button
Asked: 2019-10-26 02:26:44 +0800 CST
  • 1

Is it possible to programmatically know if systemd-timesyncd;

  • Can access to the NTP servers?
  • Has synced the system time with the server?

The reason is I have an application depends on precise time information and must be started after system time is updated. Or is there any other method without using systemd?

Thanks.

sync systemd ntp systemd-timesyncd
Martin Hope
benjamin button
Asked: 2018-07-06 23:47:05 +0800 CST
  • 1

When I put my laptop into suspend mode it consumes around half of the battery in around 8 hours. This is pretty higher when comparing the previous versions of Xubuntu that I've used.

Any idea how to track why the consumption so high? I'm not able to install another OS to check the results since this is the only laptop I'm using for work and for my personal things.

Hardware:

Asus UX430UN
i7-8550u
16GB Memory
512Gb SSD

Software:

Xubuntu 18.04 
Linux 4.15.0-24-lowlatency (I've also tried with generic kernel)
power-management suspend battery xubuntu
Martin Hope
benjamin button
Asked: 2016-06-28 13:53:03 +0800 CST
  • 0

I have a script and configuration file.

  • Configuration file contains information about if script will run or not (enabled or disabled).
  • If enabled, script must run in predetermined intervals.

I can write a cron job to run script in preset intervals and when script runs I can read the config file and if it is not enabled then I can exit.

However, I'm looking a more convenient way to do this. Is there any way to tell the cron's itself that this job is not activated in boot time? So cron will not start the job if it's not enabled (or the otherwise). Or is it possible to enable/disable job in runtime?

Thanks in advance.

command-line
Martin Hope
benjamin button
Asked: 2016-06-07 13:57:36 +0800 CST
  • 1

There is a weird behavior in Bash script. Trying to run following lines in two different systems.

Script:

cpuIdle=$(mpstat 5 1 | grep Average | awk '{  print $12 }')
cpuUsage=$(bc <<< "100.0-$cpuIdle")

And here are the details of machines.

System-1:

  • Ubuntu 14.04.04 LTS
  • Linux 4.2.0-36-generic #42~14.04.1-Ubuntu SMP Fri May 13 17:27:22 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  • awk --version = GNU Awk 4.0.1
  • bash --version = GNU bash, version 4.3.11(1)-release (x86_64-pc-linux-gnu)

System-2:

  • Ubuntu 16.04.04 LTS
  • Linux 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  • awk --version = GNU Awk 4.1.3, API: 1.1 (GNU MPFR 3.1.4, GNU MP 6.1.0)
  • bash --version = GNU bash, version 4.3.42(1)-release (x86_64-pc-linux-gnu)

Script runs fluently on System-1 but gives following error on System-2 while running bc:

(standard_in) 1: syntax error

I can confirm that in both systems cpuIdle vairable is being set correctly (1st line of the script).

I also can confirm that bc working without a problem in both systems when I set cpuIdle variable manually (like cpuIdle=97.3).

Can't decide if this is a bug or my mistake. Any suggestion or ideas?

14.04
Martin Hope
benjamin button
Asked: 2015-11-08 04:40:30 +0800 CST
  • 3

I'm trying to create a complete auto installation iso which will install customized Ubuntu image.

I successfully created an auto installer image by using remastersys tool, however, it does not install grub. After installation completed (haven't rebooted, still working on live cd) I need to run Boot-Repair application to install grub properly.

My question is, how is it possible to run a script in live cd (or pen drive) after installation finished? So it can also automatically install grub.

Thanks in advance.

14.04
Martin Hope
benjamin button
Asked: 2015-08-05 04:49:49 +0800 CST
  • 0

I'm running on Xubuntu 14.04.2 LTS. Trying to share a folder on a network via shares-admin and system-config-samba applications but they give me error.

command

sudo shares-admin

output:

error: XDG_RUNTIME_DIR not set in the environment.
error: XDG_RUNTIME_DIR not set in the environment.

(shares-admin:11220): Gtk-WARNING **: cannot open display:

command

sudo system-config-samba

output:

/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display
  warnings.warn(str(e), _gtk.Warning)
/usr/share/system-config-samba/mainWindow.py:62: Warning: invalid (NULL) pointer instance
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: Warning: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: GtkWarning: IA__gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: Warning: g_object_get: assertion 'G_IS_OBJECT (object)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: GtkWarning: IA__gdk_pango_context_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: PangoWarning: pango_context_set_font_description: assertion 'context != NULL' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: PangoWarning: pango_context_set_base_dir: assertion 'context != NULL' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: PangoWarning: pango_context_set_language: assertion 'context != NULL' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: PangoWarning: pango_layout_new: assertion 'context != NULL' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: PangoWarning: pango_layout_set_attributes: assertion 'layout != NULL' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: PangoWarning: pango_layout_set_text: assertion 'layout != NULL' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: PangoWarning: pango_layout_get_unknown_glyphs_count: assertion 'PANGO_IS_LAYOUT (layout)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: Warning: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: Warning: value "TRUE" of type 'gboolean' is invalid or out of range for property 'visible' of type 'gboolean'
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: GtkWarning: IA__gdk_screen_get_display: assertion 'GDK_IS_SCREEN (screen)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")
/usr/share/system-config-samba/mainWindow.py:62: GtkWarning: IA__gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed
  self.xml = gtk.glade.XML ("/usr/share/system-config-samba/system-config-samba.glade", domain="system-config-samba")

any idea about what's going wrong?

14.04