wget --progress=bar --show-progress ftp.belnet.be/videolan/vlc/2.2.4/win32/vlc-2.2.4-win32.exe 2>&1 | awk '{for(i=1;i<=NF;i++) if($i~/\%/) { sub(/\%/,"",$i); print $i; fflush()}}' | zenity --progress

$ powerflow-indicator --amps
0
Traceback (most recent call last):
  File "/usr/local/bin/powerflow-indicator", line 175, in <module>
    main()
  File "/usr/local/bin/powerflow-indicator", line 171, in main
    indicator = LockKeyStatusIndicator(args.amps)
  File "/usr/local/bin/powerflow-indicator", line 59, in __init__
    self.update_label()
  File "/usr/local/bin/powerflow-indicator", line 154, in update_label
    label_text = self.get_power_info()[1]
  File "/usr/local/bin/powerflow-indicator", line 141, in get_power_info

$ ./power-flow-indicator  --amps
0.0148
0.0148
0.0148
7.2816
7.2816
8.9984
8.9984
8.9984
8.9392
8.9392

$ sha1sum power-flow-indicator
d540457e86d1c83df5b9360652ca1901349cbc73  power-flow-indicator

@Zanna git clone github.com/SergKolo/power-flow-indicator.git

bytecommander@BC-AlkaliMetal:~$ upower -d
Device: /org/freedesktop/UPower/devices/line_power_ADP1
  native-path:          ADP1
  power supply:         yes
  updated:              Mo 29 Aug 2016 18:31:49 CEST (5077 seconds ago)
  has history:          no
  has statistics:       no
  line-power
    warning-level:       none
    online:              yes
    icon-name:          'ac-adapter-symbolic'

Device: /org/freedesktop/UPower/devices/battery_BAT0
  native-path:          BAT0
  vendor:               SANYO