svelleweetakealot

ifconfig eth0 192.168.0.253 up
# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8): 56 data bytes
ping: sendto: Network is unreachable
# history
   0 ls
   1 ifconfig -a
   2 ifconfig eth0 10.0.0.254 up
   3 ifconfig eth0 10.0.0.253 up
   4 ping 10.0.0.254

svelleweetakealot

#!/bin/bash
# bash generate random alphanumeric string
#

# bash generate random 32 character alphanumeric string (upper and lowercase) and 
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)

# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1

svelleweetakealot

From (this site)[https://www.kernel.org/doc/Documentation/kbuild/kconfig.txt]

You can cherry pick only a subset of config settings by using KCONFIG_ALLCONFIG variable.

Example:

Extract a linux kernel source file to a dir and change to that directory.

tar -xvf linux...tar.xz 

svelleweetakealot

for image in `grep --color=never -Po 'data:image/[^;]*;base64,\K[a-zA-Z0-9+/]*' foo.html`; do echo -n "$image" | base64 -di > `mktemp image_XXXX`; done

svelleweetakealot

 //
 // Let A be an array of Boolean values, indexed by integers 2 to n,
 // initially all set to true.
 //
 // for i = 2, 3, 4, ..., not exceeding √n:
 //   if A[i] is true:
 //     for j = i**2, i**2+i, i**2+2i, i**2+3i, ..., not exceeding n:
 //       A[j] := false.
 //
 // Output: all i such that A[i] is true.

svelleweetakealot

#include "add.h"

int add(int a, int b) {
  return a + b;
}

svelleweetakealot

• Datetime

> python3 -c 'import datetime;  print(datetime.datetime(1895, 10, 6, 16, 4, 5).strftime("%Y-%m-%d %H:%M:%S"))'
1895-10-06 16:04:05
> python2 -c 'import datetime;  print(datetime.datetime(1895, 10, 6, 16, 4, 5).strftime("%Y-%m-%d %H:%M:%S"))'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ValueError: year=1895 is before 1900; the datetime strftime() methods require year >= 1900

svelleweetakealot

(defun kubernetes-re-log ()
  (message "test")
  (set-buffer "*kubernetes logs*")
  (message "buffer name %s" (buffer-name))
  (goto-char (point-min))
  (save-current-buffer
    (set-buffer (get-buffer-create "*dump log*"))
    (erase-buffer))
  (while (re-search-forward "\\([0-9]+\-[0-9]+\-[0-9]+T[0-9]+:[0-9]+:[0-9]+ .*\\)" nil t)

svelleweetakealot

package main

/*
#cgo pkg-config: libxslt
#include <string.h>
#include <libxml/xmlmemory.h>
#include <libxml/debugXML.h>
#include <libxml/HTMLtree.h>
#include <libxml/xmlIO.h>
#include <libxml/DOCBparser.h>