lukexie

You might want to read this to get an introduction to armel vs armhf.

If the below is too much, you can try Ubuntu-ARMv7-Qemu but note it contains non-free blobs.

Running ARM programs under linux (without starting QEMU VM!)

First, cross-compile user programs with GCC-ARM toolchain. Then install qemu-arm-static so that you can run ARM executables directly on linux

If there's no qemu-arm-static in the package list, install qemu-user-static instead

lukexie

(a gist based on the old toolmantim article on setting up remote repos)

To collaborate in a distributed development process you’ll need to push code to remotely accessible repositories.

This is somewhat of a follow-up to the previous article setting up a new rails app with git.

For the impatient

Set up the new bare repo on the server:

lukexie

% dot -T svg graph1.gv -o graph1.svg

graph1.gv
=========

graph G {
  node [label="\N"];
  graph [bb="0,0,218,108"];
  king [pos="31,90", width="8.86", height="0.50"];
  lord [pos="31,18", width="0.81", height="0.50"];

lukexie

int gsdll_callback(int message, char* str, unsigned long const) { return 0;}

int main(int argc, char* argv[])
{
  int rc;
  args[0] = "gsdll32-test.exe";
  args[1] = "-dBATCH";
  args[2] = "-dNOPAUSE";
  args[3] = "-dDEVICE=pdfwrite";
  rc = gsdll_init(gsdll_callback, NULL, argct, args);

lukexie

# -k3n 第3欄    -t:   delimiter ':'
sort -k3n -t: /etc/passwd

# 以 uniq -d 找出重覆
sort /etc/passwd | cut -f1 -d: | uniq -d

lukexie

#!/bin/bash
find . -type f -printf "%s\t%p\n" | grep 213
# %s  file size in byte
# %p  filename

# 或
find . -type f -size 213c -printf "%s\t%p\n"
# 213 加 c 表示 byte, 未加則為 block

lukexie

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

lukexie

#!/bin/bash

# Script for installing tmux on systems where you don't have root access.
# tmux will be installed in $HOME/local/bin.
# It's assumed that wget and a C/C++ compiler are installed.

# exit on error
set -e

TMUX_VERSION=2.5

lukexie

"""ssh-copy-id for Windows.

Example usage: python ssh-copy-id.py ceilfors@my-remote-machine

This script is dependent on msysgit by default as it requires scp and ssh.
For convenience you can also try that comes http://bliker.github.io/cmder/.
"""

import argparse, os
from subprocess import call

lukexie

# c.f.  https://stackoverflow.com/a/5386753

import os
import sys

print('pre-fork: pid=%d, pgid=%d, sid=%d'  % (os.getpid(), os.getpgid(0), os.getsid(0)))

pid = os.fork()
if pid > 0:
        sys.exit(0)