Commands tagged shell signal (2)

  • I don't truly enjoy many commands more than this one, which I alias to be ps1.. Cool to be able to see the heirarchy and makes it clearer what need to be killed, and whats really going on. Show Sample Output


    8
    command ps -Hacl -F S -A f
    AskApache · 2009-08-19 07:08:19 1
  • Shows a less detailed output, made only of the process tree and their pids.


    1
    pstree -p
    Octave · 2009-08-20 23:31:30 0

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How many days until the end of the year

Easy to extend one-liner for cron scripts that automate filesystem checking
This one-liner is for cron jobs that need to provide some basic information about a filesystem and the time it takes to complete the operation. You can swap out the di command for df or du if that's your thing. The |& redirections the stderr and stdout to the mail command. How to configure the variables. TOFSCK=/path/to/mount FSCKDEV=/dev/path/device or FSCKDEV=`grep $TOFSCK /proc/mounts | cut -f1 -d" "` MAILSUB="weekly file system check $TOFSCK "

du with colored bar graph
A more efficient way, with reversed order to put the focus in the big ones.

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

Check whether laptop is running on battery or cable
The original proc file doesn't exist on my system.

print contents of file from line 1 until we match regex
Start printing the contents of filename to stdout, until a matching line to regex is found, then stop.

convert video to gif by ffmpeg and imagemagick
you can use any common video format. if you don't need to change the size of gif output, just remove `-vf scale=320:-1` btw, 320:-1 means width is 320px and height would be set automatically

Embed next line on the end of current line using sed
N: On the current line, sed will display it on pattern space, plus a \n (new line); but s/\n//: Will get rid of new line displayed on pattern space, joining the current line's end with the start of the next line Useful in scripts.

List the popular module namespaces on CPAN
Grabs the complete module list from CPAN, pulls the first column, ditches html lines, counts, ditches small namespaces.

Recursive grep of all c++ source under the current directory


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