Diary

rm() {
  todaytrash=~/trash/$(date +%Y%m%d)
  mkdir -p $todaytrash
  while [ 0 -lt $# ]; do
    mv "$1" $todaytrash/
    echo "$1"
    shift
  done
}

 2>&1         fdtab[2] = fdtab[1]
 >/dev/null   fdtab[1] = open("/dev/null", ...)

#include<stdio.h>
#include<stdlib.h>

#define isSJIS1(c) ((0x81 <= (c) && (c) <= 0x9f) || (0xe0 <= (c) && (c) <= 0xfc))

int main(int argc, char *argv[])
{
  int c;
  while (0 < (c = getchar())) {
    if (isSJIS1(c)) {
      printf("\\x%02x\\x%02x\"\"", c, getchar());
    } else {
      putchar(c);
    }
  }
  return EXIT_SUCCESS;
}

#! /usr/bin/bash
src=$1
dst=${1%.c}_es.c
shift
./sjis2es < $src > $dst
gcc $dst $*
rm $dst

Write usName          // 脆弱性
sOut = sName + usMsg  // 脆弱性

char* dest, src;

package require tcom

set app [::tcom::ref createobject "WinGraphviz.DOT"]
set strCMD "digraph G {A -> B -> C -> A;}"
set objPNG [$app ToPNG $strCMD]
$objPNG Save "test.png"
exit