50kudos

-module(third).
-export([maxThree/3,howManyEqual/3,eXOR/2]).

eXOR(X,Y) when is_boolean(X) andalso is_boolean(Y) ->
    case {X,Y} of
        {Y,X} -> false;
        _ -> true
    end.

maxThree(A,B,C) when is_integer(A) andalso is_integer(B) andalso is_integer(C) ->

50kudos

#!/bin/bash

cat $(find app/assets/stylesheets/ -type f) |
grep -Eo '\.[a-z]+[a-z0-9_-]*' | sort | uniq | sed s/.// |

while read CSS; do
  if ! grep -Erqi "([^(remove|has)]?class[(:|=|[:space:]*=>[:space:]*)]*[[:space:]\W]*[(\"|')]*[-a-z0-9[:space:]]*$CSS|\\.$CSS\b)" app/views/ vendor/assets/ app/assets/javascripts/; then
    echo $CSS >> unused.scss;
  fi
done

50kudos

;.MODEL	SMALL
IMAGESG		SEGMENT
	AREA	DB	0FFFFH DUP(99)	;BMP INTO
IMAGESG		ENDS

DATASG		SEGMENT
	IMG	DB	"N1.BMP",0	;PIC0
		DB	"N2.BMP",0	;PIC1
		DB	"N3.BMP",0	;PIC2
		DB	"N4.BMP",0	;PIC3

50kudos

Allow root logon

1. Swap to console mode (ctrl+alt+F3)
2. Login as root
3. In /usr/share/config/kdm/kdmrc, change AllowRootlogon = false to true

Simplest list hidden files only

ls -ld .* OR ls -ld .??*

mkv to mp4

50kudos

Arm yourself: The API wars are coming

Hypermedia API Steve Klabnik's

Hypermedia API' is more clear : Representional state transfer

Hypermedia APIs perspective

• Hypermedia APIs (cont 21)

50kudos

#161.246.34.191:-:161.246.34.195:-:sID.123456789012196:-:9999
!interval::1
!treshold::userCPU=51=89=180=180=300=999:-:usedMem=71=79=180=180=999=999:-:pUsedHdd=51=79=180=180=999=999:-:load5=1.50=1.79=180=180=200=999:-:load15=1.50=1.79=180=200=300=600
#treshold::key,threshold1,threshold2,t1(time to warning),t2(time to critical),t3(special time for migrate),t4(extra time for migrate) ,remark load5 t3 and t2 must be different 20+ 
$userCPU::sar -u 1 1 | sed -n 4,4p | awk '{print $4}'
$sysCPU::sar -u 1 1 | sed -n 4,4p | awk '{print $6}'
$load1::w | sed -n 1,1p |sed 's/.*: \(\)/\1/g' | cut -d, -f1
$load5::w | sed -n 1,1p |sed 's/.*: \(\)/\1/g' | cut -d, -f2 | sed s/' '//
$load15::w | sed -n 1,1p |sed 's/.*: \(\)/\1/g' | cut -d, -f3 | sed s/' '//
$pUsedHdd::df | grep '\/$' | awk '{if($1~/sda/)$4=$5};END{print $4}' | sed s/%//

50kudos

Ruby will interprete variable inside "it block" before calling let.
So don't use the same varible name as let in the block.

50kudos

http://redis.io/commands/lrange

Key: 'resque:queue:immediate' (list by KEYS *)

redis-cli LRANGE 'resque:queue:immediate' 0 -1 | grep 'InferFeedUrl' | wc -l

(grep ruby job's class defined at hash key.)