我正在尝试运行高级Linux编程一书中的示例(清单3.4,第51页):
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
/* Spawn a child process running a new program. PROGRAM is the name
of the program to run; the path will be searched for this program.
ARG_LIST is a NULL-t
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
3 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting u
对于grep特定的关键字和它的内容,我有一个问题。这是示例文件,实际文件比这个文件大。
示例
user@linux:~$ cat url.txt
abcrandomtextdef another random text blablabla
another random iwantthis text abcrandomtextdef url=https://www.google.com ghirandomtextjkl
ghirandomtextjkl another random text yadayada
wxyz iwantthis abcdef url=yahoo.com yaday
我有一堆使用-ggdb3标志编译的源代码。我已经将源代码和可执行文件复制到另一台机器上。当我在gdb中运行exe时,当它中断时,它不会显示行号处的语句。
这就是我所看到的
Breakpoint 1, TestCode (handler=0x806e110, args=0xffffd2b0)
at ../myfile.c:1080
1080 ../myfile.c: No such file or directory.
(gdb) n
1083 in ../myfile.c
(gdb)
1084 in ../myfile.c
(gdb)
1085 in ../
我有Ubuntu16.04.5并试图安装Keras。我需要h5py来解决这个问题,但是我在安装它时遇到了问题。当我打字时:
sudo pip install h5py
我拿到了这个:
The directory '/home/nvidia/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If exec
我正在尝试使用apache2卸载apt-get purge apache2,它显示了以下内容
root@indrajit-MacBookPro:/home/indrajit# apt-get purge apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages ha
我运行ng new onepage,几分钟后得到以下错误:
npm WARN deprecated graceful-fs@1.2.3: graceful-fs v3.0.0 and before will fail on node releases >= v7.0. Please update to graceful-fs@^4.0.0 as soon as possible. Use 'npm ls graceful-fs' to find it in the tree.
npm WARN deprecated minimatch@2.0.10: P
我已经创建了一个react应用程序
create-react-app pics
命令。但不幸的是我收到了一些警告。我怎样才能摆脱这些警告呢?
npm WARN eslint-config-react-app@5.2.0 requires a peer of eslint-plugin-flowtype@3.x but none is installed. You must install peer dependencies yourself.
npm WARN tsutils@3.17.1 requires a peer of typescript@>=2.8.0 || >= 3.