我在使用FFMPEG转码时遇到以下错误。在我看来,解码VC1格式是一个错误,实际上与我想要转码的目标格式(x264)没有任何关系。
我跟踪错误到这个源文件:
但我不知道如何将配置文件设置为一个值!= simple。
FFMPEG输出:
ffmpeg version 1.1 Copyright (c) 2000-2013 the FFmpeg developers
built on Jan 16 2013 22:52:43 with gcc 4.6.3 (Gentoo 4.6.3 p1.10, pie-0.5.2)
configuration: --prefix=/usr --libd
我正在Linux上编写多线程程序,希望在线程中创建一个进程,而不结束其他线程。我查看了fork/exec,但是在linux状态的第3p节中的exec手册页中:
A call to any exec function from a process with more than one thread
shall result in all threads being terminated and the new executable
image being loaded and executed. No destructor functions shall be
一个linux内核的新手问题。
mmap手册页说明".. otherwise, it shall return a value of MAP_FAILED and set errno to indicate the error... "
我在/usr/src/linux/mm/mmap.c下查找了mmap的内核代码,但我找不到mmap返回MAP_FAILED的位置。
谁能告诉我在哪里可以找到同样的东西。
谢谢
我有一个句子需要解析。其含义如下:
I'm sure _I_ shan't be able! I shall be a great deal too far off to trouble myself
下面我需要的结果是:
I'm sure I shan't be able! I shall be a great deal too far off to trouble myself
Exrepssion会是什么样子的?
我当前使用的表达式是
r'(?!_)\w+'
但我得到的结果是:
I'm sure I_ shan't b
当我创建一个新用户,但它不能登录数据库时。
我是这样做的:
postgres@Aspire:/home/XXX$ createuser dev
Shall the new role be a superuser? (y/n) n
Shall the new role be allowed to create databases? (y/n) y
Shall the new role be allowed to create more new roles? (y/n) y
然后创建一个数据库:
postgres@Aspire:/home/XXX$ createdb -O dev test_dev
我有一个Python3程序,它将在linux上进行测试,而windows将使用Python3.6+进行测试。
对于thos,测试环境是一个需要的TestServer,它将作为进程在后台运行(来自多进程),同时测试正在运行。测试与单元测试一起运行。
TestServer流程(称为this循环)如下所示:
def mainloop(somearg):
server = mylib.server.Server()
# some initialisation stuff
server.start()
while True: # How to break/handle t
使用Powershell,我们成功地提取了基于模式的线条。
get-content "C:\Search.doc" |
select-string -pattern "means the aggregate of the Facility" a
但我们怎么能从word文档中提取出一个章节。见下面的例子(我们需要摘录要点(a)和(b),这是目的一节:
3. PURPOSE
3.1 Purpose
(a) Each Borrower shall apply all amounts borrowed by it under Facility A:
(i) paym
我试图安装qmailtoster在我的centos服务器,我做了以下所有的不是一次,而是重复,因为我的错误和继续,但我觉得我需要一些帮助。
我确实遵循了这个wiki文档的所有步骤。
http://wiki.qmailtoaster.com/index.php/CentOS_5_QmailToaster_Install#Begin_安装
遵循所有的过程,当我进入安装点时,我总是得到这个错误。
cnt50-install-script.sh: line 80: rpmbuild: command not found
error: File not found by glob: /usr/src/
所以我是个初级程序员..。我不知道我为一段文字冒险写的这段代码有什么问题。我现在只想让用户输入一个命令,然后将其转换为ALLCAPS并打印出来。它的产出应该是:
What shall I do?
pie
Your raw command was: PIE
但相反,它的输出如下:
What shall I do?
pie
PIE
然后...and就结冰了。下面是代码:
#include <iostream>
#include <string>
#include <cctype>
#include <cstring>
#include <vec
bash内置type可以通过检查其退出状态来用于此目的:
Exit Status:
Returns success if all of the NAMEs are found; fails if any are not found.
有多便携?关于type的退出状态,POSIX规范有点不清楚:
EXIT STATUS
The following exit values shall be returned:
0 Successful completion.
>0 An error occurred.
来源:http://pubs.opengroup
例如,如果我在vim中打开一个全新的文件,它已经包含以下文本:
/*
The MIT License
Copyright (c) 2009 Apphacker apphacker@gmail.com
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without r
这是我的完整文本:
RETENTION
Liability in excess of the Retention
The Retention shall be borne by the Named Insured and the Insurer shall only be liable for Loss once the Retention has been fully eroded. The Retention shall apply until such time as it has been fully eroded after which no Retention shall appl
我有一个钢笔驱动器和一个分区:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931.5G 0 disk
└─sda1 8:1 0 931.5G 0 part /
sdb 8:16 1 7.5G 0 disk
└─sdb1 8:17 1 7.5G 0 part
我用命令格式化:
# mkfs.fat -n A /dev/sdb
而且效果很好。
但之后,我浏览了mkfs的手册页:
mkfs is used to build a Linux filesyst
试着让这个大政方针发挥作用。
[a-z0-9-\.]+(?!.in-addr.arpa*$)
样本-
sdfgsed.co.in //shall match
1.1.1.1.in-addr.arpa //shall not match
fgsagf.co.ru //shall match
agfasfdg21.cn //shall match
编辑-
(?i)([a-z0-9-\.]{3,}\.(?!us|com|net)[a-z]{2})+$(?<!\.in-addr\.arpa)\x00
我试过这里提供的答案。Regex在数据包中搜索为域名.com .net发出的DNS请求。组织T
你好,我是tryng,在rails应用程序中创建一个数据库,但是我遇到了这个错误
FATAL: role "giovanni" does not exist
/var/lib/gems/2.1.0/gems/activerecord-4.2.0/lib/active_record/connection_adapters/postgresql_adapter.rb:661:in `rescue in connect'
/var/lib/gems/2.1.0/gems/activerecord-4.2.0/lib/active_record/connection_
我可以很容易地使用TTTAttributedlabel来获得可点击的url、名称等。
1)如何创建类似于CKLabelComponent中的内容
2)我需要使用CKTextComponent吗
[CKLabelComponent newWithLabelAttributes:{
.string = @"This shall be context This shall be context This shall be context This shall be context",
我在Centos4上发现,popen()的手册页部分地声明:
DESCRIPTION
The pclose() function shall close a stream that was opened by popen(), wait for the command to termi-
nate, and return the termination status of the process that was running the command language inter-
preter. However, if a call caused the
我习惯于打字
$ cd
在bash中没有参数导航到我的主目录。
然而,由于一些未定的时间,这不再起作用,只是什么也不做。
设置了我的HOME变量:
$ echo $HOME
/home/me
这怎么可能呢?上面写着
If no directory operand is given and the HOME environment variable is set to a non-empty
value, the cd utility shall behave as if the directory named in the HOME environment
variable was speci
问题
Have a multi_exec.pl that shall handle timed-out execution of command provided.
And we call this multi_exec.pl at various places in our legacy applciation.
Sample call :
$grab = `multi_exec.pl -1 'bcp_cmd-1' 'bcp_cmd-2' ... 'bcp_cmd-n'`
想了解如何使用STDOUTERR重定向实现以下目标
在终端上捕获单
我想在Travis-CI上运行我的凤凰应用程序的测试。
日志摘录:
$ MIX_ENV=test mix do deps.get, compile, test
Could not find hex, which is needed to build dependency :phoenix
Shall I install hex? [Yn]
当涉及到获取和安装依赖项时,它会询问是否应该安装hex。我想知道我是否可以通过一个--yes选项来混合,这样它就不会问了,而只是安装了?
我有一个这样的字符串,它来自数据库。
str="This is first string.Exception No. 1: Unprotected vertical openings in accordance with 8.2.5.8 shall be permitted.Exception No. 2:Exception No. 1 to 8.2.5.6(1) shall not apply to patient sleeping and treatment rooms.This is test ".
我正在使用这个条件来中断新的行
str = str.replace
我有一个有字符串的列。我想做一个模糊匹配,并在旁边的一列中标记有80%匹配的那些。我可以用下面的代码在一个较小的数据集上做到这一点,但是我的原始数据集太大了,不能有效地工作。有没有更好的方法来做这件事?这就是我所做的。
import pandas as pd
l = [[1,'a','b','c','help pls'],[2,'a','c','c','yooo'],[3,'a','c','c','you wi
我在YouTube的MEAN堆栈上从前到后浏览Traversy Media播放列表,在导入flash消息后,console给出了错误,我无法理解。我阅读了一些gitHub问题页面,但它们没有任何结果。
ERROR in Error: Metadata version mismatch for module B:/Shall/Practice/meanauthapp/angular-src/node_modules/angular2-flash-messages/module/index.d.ts, found version 4, expected 3, resolving symbol Ap
# The **variable slicing** notation in the following conditional
# needs some explanation: `${var#expr}` returns everything after
# the match for 'expr' in the variable value (if any), and
# `${var%expr}` returns everything that doesn't match (in this
# case, just the very firs
我有一个内容字符串,如:
content =
"""
the patient monitoring system shall perform a daily device check from 1:30 am to 4:30 am (patient local time). if a device malfunction is detected, the daily device check shall send the malfunction to the clinician. if a patient health alarm is detected, the da
我有一个有84个元素的字符对象。
> head(output.by.line)
[1] "\n17"
[2] "Now when Joseph saw that his father"
[3] "laid his right hand on the head of"
[4] "Ephraim, it displeased him; so he took"
[5] "hold of his father's hand to re
如果我使用这段代码将单词加粗,我该如何将它们变为大写呢?
var vow = "Night gathers, and now my watch begins. It shall not end until my death. I shall take no wife, hold no lands, father no children. I shall wear no crowns and win no glory. I shall live and die at my post. I am the sword in the darkness. I am the watcher on
我有一个sed的更换问题,希望你们中的一个能帮助我。我确信我错过了一些简单的东西。
所以我有一个包含文本和引号的文件。报价本身可以在一行中,也可以跨多行。我想在新的一行上单独引用。作为示例,下面是文件的示例
And he said "This too
shall pass"
我需要将其更改为
And he said
"This too shall pass"
我尝试了以下sed命令,但它不起作用--它似乎匹配得很好,但未能获得新的行
/"This/ {
N
s/"This *\n*too *\n*shall *\n*pas
从用户那里获取价值
user_input = input("You decide: ")
#根据用户值打印特定短语的函数也有错误值的错误消息(输入错误值需要循环)
if user_input == 'A' or user_input == 'a':
print("With Uncle Sam in your corner you shall not fail...or I could be wrong?\nEither way lets get that Clock rolling")
elif user_input ==
我昨天花了几个小时试图替换notepad++中的断线。
我有过这样的事情:
"1:30 And to every beast of the earth, and to every fowl of the air,
and to every thing that creepeth upon the earth, wherein there is
life, I have given every green herb for meat: and it was so.
1:31 And God saw every thing that he had made, and, behold,