jappy

grep '[A–Z]' #lines with an uppercase char
grep 'ˆ[A–Z]' #lines starting with an uppercase char
grep '[A–Z]$' #lines ending with an uppercase char
grep 'ˆ[A–Z]*$' #lines with all uppercase chars
grep '[aeiouAEIOU]' #lines with a vowel
grep 'ˆ[aeiouAEIOU]' #lines starting with a vowel
grep '[aeiouAEIOU]$' #lines ending with a vowel
grep –i '[aeiou]' #ditto
grep –i 'ˆ[aeiou]'
grep –i '[aeiou]$'

jappy

sort –d #dictionary order
sort –f #fold case
sort –n #numeric order
sort –nr #reverse numeric order
sort +1 #start with field 1 (starting from 0)
sort +0.50 #start with 50th character
sort +1.5 #start with 5th character of field 

jappy

tr -sc 'A-Za-z' '\n' < filename.txt | aspell list --mode=none

same as:

tr -sc 'A-Za-z' '\n' < filename.txt | spell -v

jappy

find . -type f | xargs wc -l

jappy

// kernel.cu : Defines the entry point for the console application.
//

#include "kernel.h"
#include <stdio.h>
#include <stdlib.h>
#include <cuda.h>
#include <cutil.h>
#include <cuda_runtime.h>

jappy

;; Call the renderer-fn macro with a template and it returns a function optimized to render it.
;; This happens at compile-time. 
;; At run-time, you call this function with the parameters that will be interpolated into the template,
;; typically (but not limited to) a map.
;;
;; Useful in i18n for variable interpolation, for example. I'm using this to add internationalization
;; support to https://github.com/xavi/noir-auth-app

;; See usage at the end.

jappy

# searches from ./
find . -type f|xargs perl -pi -e 's/\t/    /g'

jappy

import java.util.ArrayList;
import java.util.List;
import java.util.Collections;

public class MinimumEditDistance {
    
    public interface CostFunction {
        public int cost(int[][] distanceMatrix, CharSequence x, CharSequence y, int i, int j);
    }
    

jappy

#! /bin/sh

for x
do
    echo "Converting $x"
    tr -d '\015' < "$x" > "tmp.$x"
    mv "tmp.$x" "$x"
done