我如何阅读前四行readlines(),我STDIN从代理到我的脚本:
GET http://www.yum.com/ HTTP/1.1
Host: www.yum.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-gb,en;q=0.5
Accept-Encoding: gzip, deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Proxy-Connection: keep-alive
我使用它sys.stdin.readlines()并将其记录到文件,但我想只记录GET和User-Agent行到文件.
while True:
line = sys.stdin.readlines()
for l in line:
log = open('/tmp/redirect.log', 'a')
log.write(l)
log.close()
我试图将我的python代码移植到C,但在此之前我做了性能测试,但看起来它没有提高性能.
首先是C程序:
#include <stdio.h>
main ()
{
printf("hello world \n");
}
[root@server c]$ gcc test.c
[root@server c]$ time ./a.out
hello world
real 0m0.001s
user 0m0.000s
sys 0m0.000s
第二个Python程序:
#!/usr/bin/env python
print "hello world \n"
[root@server c]$ time python test.py
hello world
real 0m0.024s
user 0m0.020s
sys 0m0.003s
第三次Cython ......
test.py
print "hello world \n"
[root@server c]$ cython --embed test.py
[root@server c]$ gcc $CFLAGS -I/usr/include/python2.6 -o test test.c -lpython2.6 -lpthread -lm -lutil -ldl
[root@server c]$ time ./test
hello world
real 0m0.024s …我试图使用lseek()创建一个给定大小的文件,并在文件的末尾添加一个字节,但它创建一个0字节的稀疏文件.
以下是代码...任何建议？
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#ifndef BUF_SIZE
#define BUF_SIZE 1024
#endif // BUF_SIZE
int main(int argc, char *argv[])
{
int inputFd;
int fileSize = 500000000;
int openFlags;
int result;
mode_t filePerms;
ssize_t numRead;
char buf[BUF_SIZE];
openFlags = O_WRONLY | O_CREAT | O_EXCL;
filePerms = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH; /*rw-rw-ew*/
inputFd = open(argv[1], openFlags, filePerms);
if (inputFd == -1)
printf("problem opening file %s ", argv[1]); …我正在尝试创建一个可以从主函数调用的字符串函数,但这会给出分段错误...任何想法???
也可以创建一个返回字符串的字符串函数.
#include <iostream>
#include <stdio.h>
#include <sstream>
using namespace std;
string callMe(string& k){
cout << "String from callMe: " << k;
}
int main(){
string k;
k = "K SHK";
cout << "String from main function: " << k << endl;
callMe(k);
}
更新:
它编译好..
[root@server dev]# ./stringtest
String from main function: K SHK
Segmentation fault
我正在使用 elasticsearch-logstash 模块
https://forge.puppetlabs.com/elasticsearch/logstash
这就是我的 hiera 的样子...
---
classes:
- 'profile::logstash'
profile::logstash::conf:
package_url: "https://download.elasticsearch.org/logstash/logstash/packages/centos/logstash-contrib-1.4.2-1_efd53ef.noarch.rpm"
这是配置文件中的 logstash.pp
class profile::logstash {
$conf = hiera('profile::logstash::conf',{})
validate_hash($conf)
create_resources('logstash',$conf)
}
我收到这个错误...
Error: can't convert String into Hash at /tmp/vagrant-puppet-2/modules-0/profile/manifests/logstash.pp:10 on node pw-idx-11.local
Wrapped exception:
can't convert String into Hash
Error: can't convert String into Hash at /tmp/vagrant-puppet-2/modules-0/profile/manifests/logstash.pp:10 on node pw-idx-11.local
更新：
使用这个固定....
class profile::elasticsearch {
class { '::elasticsearch':
version => '1.1.1-1'
}
$elasticsearch_configs = hiera_hash('profile::elasticsearch::instance',{})
validate_hash($elasticsearch_configs)
create_resources(elasticsearch::instance,$elasticsearch_configs)
package { 'java-1.7.0-openjdk.x86_64':
ensure => 'installed'
}
}
我正在使用这个CIS模块arildjensen/cis-puppet
并希望覆盖/etc/profileCIS模块上的文件声明
所以我在这篇文章之后创建了这个新的清单
class profile::hadoop::settings inherits cis {
file { '/etc/profile':
ensure => 'file',
owner => 'root',
group => 'root',
mode => '0600',
source => 'puppet:///modules/profile/hadoop/etc/profile',
}
}
但是这仍然会给出错误
Error: Duplicate declaration: File[/etc/profile] is already declared in file /tmp/vagrant-puppet/modules-ab9b45e51a68912cdc576c81d46a2260/profile/manifests/hadoop/settings.pp:9; cannot redeclare at /tmp/vagrant-puppet/modules-ab9b45e51a68912cdc576c81d46a2260/cis/manifests/linuxcontrols/c0076.pp:12 on node server.localdomain
我正在尝试制作一个接受密码文本的PHP脚本,并将从数据库中删除相关数据.加载脚本时出现此错误
语法错误,第4行/home2/krisindi/public_html/deletead.php中的意外T_IS_NOT_EQUAL
<?php
$password = $_POST["password"];
if ( $password ) != 0 )
{
$id = $data->select ("Classified", "AdID", array ("Password => ($password)));
$data->delete ( "AdExtraField" , array ( "AdID" => intval ( $id["AdID"] ) ) ) ;
$data->delete ( "Classified" , array ( "Password" => ( $password ) ) ) ;
exec ( "chmod ../media/ 777" ) ;
$image_file = "../media/cls_".$id["AdID"]."_520.jpg" ;
if ( file_exists ( $image_file ) )
unlink ( $image_file ) ;
for ( $i = 1 …我正在运行curl命令来检查网站的状态:
try:
connectionTest = subprocess.Popen([r"curl --interface xx.xx.xx.xx http://www.yahoo.com"], shell=True, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
cstdout,cstderr = connectionTest.communicate()
if cstdout:
#print cstdout
status = "OK"
elif cstderr:
#print cstderr
status = "PROBLEM"
except:
e = sys.exc_info()[1]
print "Error: %s" % e
代码工作正常,除了try:except语句没有正确捕获异常,下面是接口关闭时脚本的输出,现在我想在except语句中捕获第一行...而不是产生......这可能吗？
SIOCSIFFLAGS: Cannot assign requested address
PROBLEM