Commands using acpi (12)

  • Check whether laptop is running on battery or cable

    The original proc file doesn't exist on my system. Show Sample Output


    4
    acpi -b
    dbbolton · 2010-06-10 23:23:16 0
  • print battery , thermal , and cooling info


    3
    acpi -tc
    hypnojazz · 2009-03-29 22:27:31 2
  • To get the CPU temperature continuously on the desktop

    There is no need for variables. I also added sleep to reduce cpu usage, however I didn't test it.


    3
    while :; do acpi -t | osd_cat -p bottom ; sleep 1; done &
    John_W · 2011-01-14 13:57:45 4
  • On Screen micro display for battery and CPU temperature. nifty, small, omnipresent

    My firefox overheats my cpu, sometimes above 90 degrees Celsius ( hence the name? ) To keep an eye on temperature, I put this command inside KAlarm ( a kind of cron) to be repeated every minute, for 5 seconds, color red ( default for osd_cat). Its pretty, ultra small, displays a micro 2 lines text on every desktop and over everything and do not steal focus or interrupt any task. I get the information passively, in the low profile bottom of the screen. Of course you can use it inside a terminal. Just do it: watch -n 60 'acpi -t | osd_cat -p bottom'


    2
    acpi -t | osd_cat -p bottom
    m33600 · 2009-10-23 05:22:01 0
  • Use acpi and notify-send to report current temperature every five minutes.

    works best in a shell script run at startup. It will ping localhost once and output to null, after it does that, acpi is called for temperature in fahrenheit and piped through to another loop that feeds notify-send for a tooltip. After waiting five minutes, it will start over. Show Sample Output


    2
    while ping -c 1 127.0.0.1 > /dev/null; do acpi -t -f | while read tem; do notify-send "$tem"; done; sleep 300; done
    c0de · 2011-07-02 06:47:25 2
  • Battery real life energy vs predicted remaining plotted

    This time I added a print to reemaining energy, every minute, time stamped. The example shown here is complete and point to large discrepancies as time passes, converging to accuracy near the end. Show Sample Output


    1
    echo start > battery.txt; watch -n 60 'date >> battery.txt ; acpi -b >> battery.txt'
    m33600 · 2009-10-19 05:28:15 0
  • Display laptop battery information


    1
    acpi -V
    vajorie · 2010-06-09 14:23:08 0
  • Check whether laptop is running on battery or cable


    1
    acpi -a
    wiburg · 2010-06-12 20:07:27 0
  • To get the CPU temperature continuously on the desktop

    No need for a colon, and one less semicolon too. Also untested.


    1
    while sleep 1; do acpi -t | osd_cat -p bottom; done &
    linuts · 2011-01-14 23:22:57 0
  • Check whether laptop is running on battery or cable

    This prints "Charging" or "Discharging". Obviously, this will indicate the status of the AC adapter. The awk part could be from 1-6. I removed the comma because it is useless when only looking at one element of the output array. See acpi(1) for more info.


    0
    acpi -b | sed 's/,//g' | awk '{print $3}'
    dbbolton · 2010-06-11 05:32:57 0
  • Print the current battery status


    -2
    acpi | cut -d '%' -f1 | cut -d ',' -f2
    sn0opy · 2009-02-16 13:36:01 3
  • Power Supply Triggered Alert

    Checks whether your power supply is still plugged in. If not it will trigger an alarm at maximum volume. Show Sample Output


    -3
    check(){ power=$(acpi -a) ; if [[ $power == *on-line* ]] ; then echo "supply is on"; else echo "somebody is steeling your laptop"; amixer -c0 set Master 100+ unmute ; mpg123 nuclear-alarm.mp3 ; fi } ;while true; do check ; sleep 2 ; done
    hoodie · 2011-12-10 13:42:52 0

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Summarize size of all files of given type in all subdirectories (in bytes)
This deals nicely with filenames containing special characters and can deal with more files than can fit on a commandline. It also avoids spawning du.

Detect illegal access to kernel space, potentially useful for Meltdown detection
Based on capsule8 agent examples, not rigorously tested

Tracklist reaplace backspace to '-'
Requires perl 5.14 or greater

Optimize Xsane PDFs
Xsane produces PDFs that are too large - particularly multipage PDFs. This command compresses them. If you do not use A4, remove the -sPAPERSIZE flag.

Speed up builds and scripts, remove duplicate entries in $PATH. Users scripts are oftern bad: PATH=/apath:$PATH type of thing cause diplicate.

Execute text from the OS X clipboard.
The backtick operator, in general, will execute the text inside the backticks. On OS X, the pbpaste command will put the contents of the OS X clipboard to STDOUT. So if you put backticks around pbpaste, the text from the OS X clipboard is executed. If you add the pipeline | pbcopy, the output from executing the command on the clipboard is placed back on the clipboard. Note: make sure the clipboard is text only.

Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Sending a file over icmp with hping
you need to start a listening hping on the reciever: hping3 --listen 10.0.2.254 -I eth0 --sign MSGID1 then you can send your file: hping3 10.0.2.254 --icmp --sign MSGID1 -d 50 -c 1 --file a_file

Get the size of all the directories in current directory

display date of last time a process was started in `date` format
STARTED Mon Oct 18 04:02:01 2010

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