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由于scrapy对python3支持不是很好，所以使用python2.7
引用apt-get install python
ls
cd /tmp
ls
wget https://bootstrap.pypa.io/get-pip.py
apt-get install wget
wget https://bootstrap.pypa.io/get-pip.py
python -v
python get-pip.py
pip install scrapy
apt-get install gcc
apt-get update
apt-get upgrade
apt-get install gcc
...
编译scrapy时出现如下错误：
引用/usr/bin/ld: cannot find -lz
错误原因是因为没有相应的lib
于是
引用apt-get install libz-dev
解决问题
[转]sysyemd
- 博客分类：
- linux
http://0pointer.de/blog/projects/why.html
http://0pointer.de/blog/projects/systemd.html
http://www.freedesktop.org/wiki/Software/systemd/
https://github.com/lfit/itpol/blob/master/linux-workstation-security.md
https://news.ycombinator.com/item?id=10134009
based on our case, we need to handle two different url request:
example/0.5/xxx ==> 192.168.1.100:8080/xxx
example/0.7/xxx ==> 192.168.1.101:8080/xxx
Here is the configuration:
引用
root@p1:/etc/nginx/conf.d# cat /etc/nginx/conf.d/default.conf
## Basic reverse proxy server ##
## Apache ( ...
引用
1. sed command
sed '/^$/d' a.txt > output.txt
2. vim command
:g/^$/d
3. cat command
cat -s a.txt
4. vim command
:%!cat -s
[转]w3m cheat sheet
- 博客分类：
- linux
http://wiki.titan2x.com/index.php?title=W3m_cheat_sheet
[url]
http://ftp.gnu.org/old-gnu/Manuals/gdb/html_node/gdb_118.html[/url]
[url]
http://visualgdb.com/gdbreference/commands/set_solib-search-path
[/url]
引用
root@jason:/opt/lxc/src/lxc# gdb ./lxc-attach
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
Li ...
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
#include <stdlib.h>
int main(int argc, char* argv[]){
int status;
pid_t pid = fork();
if(-1 == pid){
perror("Fork Error");
}else if (0 == pid ){
strcpy(ar ...
qemu linux
- 博客分类：
- linux
引用1. create disk space
qemu-img create -f qcow2 vdisk.img 10G
引用
2. install OS
qemu-system-x86_64 -hda vdisk.img -cdrom CentOS-6.6-x86_64-minimal.iso -boot d -m 1024
引用
3. start OS
qemu-system-x86_64 vdisk.img -m 2048
lxc-execute error
- 博客分类：
- linxu
引用
lxc-execute -n vm1 -f vm1/lxc.conf -- /bin/bash
lxc-execute: cgfs.c: cgroup_read_from_file: 2121 No such file or directory - failed to read /sys/fs/cgroup/lxc/cpuset.cpus
lxc-execute: cgfs.c: lxc_cgroupfs_create: 964 Failed to initialize cpuset for '/lxc' in '/sys/fs/cgroup'.
lxc-execute: cgfs.c: ...
linux gpu problem
- 博客分类：
- linux
When using GPU in Linxu by ssh to remote server(which supports GPU), I got an error like 引用
TclError: no display name and no $DISPLAY environment variable
Solution:
run ssh command as
引用
ssh -X username@server_ip
Quited from "man ssh"
引用
-X Enables X11 forwarding. This can also be ...
引用
1. dex2jar file.apk
引用
2. wget https://github.com/java-decompiler/jd-gui/releases/download/v1.4.0/jd-gui-1.4.0.jar
引用
3. java -jar jd-gui-1.4.0.jar
引用
4. open the jar file decompile by dex2jar in jd-gui
rails spring command
- 博客分类：
- RoR
https://github.com/rails/spring
Brief
Totally automatic; no need to explicitly start and stop the background process
Reloads your application code on each run
Restarts your application when configs / initializers / gem dependencies are changed
1. start spring
引用
bundle exec spring bin ...