我有一个字符串
00:28:04 /usr/lib/jvm/jre/bin/java -DJDBC_CONNECTION_STRING= -Dspring.profiles.active=qa -XX:MaxPermSize=256
并想提取后面的qa单词-Dspring.profiles.active。
我将字符串保存在文件 text.txt 中只是为了演示它。
当我做
grep -r -o "spring.profiles.active=" text.txt
结果是spring.profiles.active=
这个词并不总是qa，它可能是prod或dev。
我想做的是找到这个词spring.profiles.active并在=提取那个词之后。
我想编写 shell 脚本，因为我使用这个词来配置服务器上的其他项目。
这可能吗？如果可以，我该怎么做。
我已经下载并安装了maven3.3.3。在 uBuntu 14.04 上，当我运行命令时
mvn --version
我收到这个错误
-Dmaven.multiModuleProjectDirectory system propery is not set. Check $M2_HOME `enter code here`environment variable and mvn script match.
我尝试在 /etc/environment 中设置环境
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/opt/apache-maven-3.3.3/bin"
JAVA_HOME="/usr/lib/jvm/java-8-oracle/jre"
MAVEN_OPTS="-Xms1024m -Xmx2048m -Dmaven.surefire.debug=-Xmx2048m -XX:MaxPermSize=128m"
M2_HOME="/opt/apache-maven-3.3.3"
对你的帮助表示感谢
G
任何人都可以帮助我，我无法登录我的笔记本电脑。看起来它只是循环回到登录屏幕。
可能是什么原因造成的，我在 AWS EC2 实验室工作，在设置实例后，我下载了 PEM/PPK，将其保存在一个文件夹中。然后我不得不打开终端并输入chmod 600 ~/ <pathToPem>see Image below，我得到了一个错误所以我把sudo chmod 600 ~/ pathname. （几乎可以肯定这就是我遇到问题的原因）当我运行第二个命令时它找不到路径，当我检查家里的文件/文件夹时很多东西都消失了？所以在那只雄鹿我注销并尝试重新登录但似乎陷入了循环。
谁能帮我回去并撤消我所做的事情。我可以获取文本登录并以这种方式获取，但似乎无权执行任何操作。
试图运行ls -la .Xauthority并获取 ls：无法访问 .Xauthority：没有这样的文件或目录。
我正在（逐渐）从 Windows 转移到 Ubuntu，并使用 Faststone Image Resizer for Windows 一段时间，发现它非常好。
有人可以向我推荐适用于 Ubuntu 的等效软件吗？
我正在尝试从 Ubuntu 连接到 eduroam，它要求我提供证书。我问过我的大学技术支持，得到的答案是“我对 Linux 或 Ubuntu 一无所知，我们所有的机器都是 Windows 或 Mac”。我问了一位讲师，他说不需要证书。
我该如何解决？
我在顶部面板上有一个红色三角形，上面写着
The update information is outdated. This may be caused by network problems or by a repository that is no longer available. Please update manually by selecting show updates from the indicator menu and watching for any failing repositories.
我的 Ubuntu 是最新的。打开笔记本电脑后需要一些时间才能出现，即使 Ubuntu 是最新的，它也总是会返回。
输出sudo apt-get upgrade：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
libbit-vector-perl libcarp-clan-perl libclass-method-modifiers-perl
libdata-random-perl libdate-calc-perl libdate-calc-xs-perl libgd-perl
libgnome2-gconf-perl libmouse-perl libnet-dropbox-api-perl
linux-headers-3.13.0-32 linux-headers-3.13.0-32-generic
linux-image-3.13.0-32-generic linux-image-extra-3.13.0-32-generic
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
这是输出sudo apt-get update：
Ign http://ppa.launchpad.net trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Ign http://ppa.launchpad.net trusty InRelease
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release.gpg
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Hit http://ppa.launchpad.net trusty Release
Ign http://ie.archive.ubuntu.com trusty InRelease
Ign http://old-releases.ubuntu.com raring InRelease
Hit http://ppa.launchpad.net trusty Release
Ign http://ie.archive.ubuntu.com trusty-updates InRelease
Hit http://old-releases.ubuntu.com raring Release.gpg
Ign http://ie.archive.ubuntu.com trusty-backports InRelease
Hit http://ppa.launchpad.net trusty Release
Hit http://ie.archive.ubuntu.com trusty Release.gpg
Hit http://old-releases.ubuntu.com raring Release
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Get:1 http://ie.archive.ubuntu.com trusty-updates Release.gpg [933 B]
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://old-releases.ubuntu.com raring/main amd64 Packages
Hit http://ie.archive.ubuntu.com trusty-backports Release.gpg
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ie.archive.ubuntu.com trusty Release
Hit http://old-releases.ubuntu.com raring/restricted amd64 Packages
Get:2 http://ie.archive.ubuntu.com trusty-updates Release [62.0 kB]
Hit http://old-releases.ubuntu.com raring/universe amd64 Packages
Hit http://old-releases.ubuntu.com raring/multiverse amd64 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://old-releases.ubuntu.com raring/main i386 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://old-releases.ubuntu.com raring/restricted i386 Packages
Hit http://old-releases.ubuntu.com raring/universe i386 Packages
Hit http://ie.archive.ubuntu.com trusty-backports Release
Hit http://ie.archive.ubuntu.com trusty/main Sources
Hit http://old-releases.ubuntu.com raring/multiverse i386 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ie.archive.ubuntu.com trusty/restricted Sources
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ie.archive.ubuntu.com trusty/universe Sources
Hit http://old-releases.ubuntu.com raring/main Translation-en
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ie.archive.ubuntu.com trusty/multiverse Sources
Hit http://ie.archive.ubuntu.com trusty/main amd64 Packages
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ie.archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://old-releases.ubuntu.com raring/multiverse Translation-en
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ie.archive.ubuntu.com trusty/universe amd64 Packages
Hit http://ppa.launchpad.net trusty/main Translation-en
Hit http://ie.archive.ubuntu.com trusty/multiverse amd64 Packages
Hit http://old-releases.ubuntu.com raring/restricted Translation-en
Hit http://ppa.launchpad.net trusty/main amd64 Packages
Hit http://ie.archive.ubuntu.com trusty/main i386 Packages
Hit http://ppa.launchpad.net trusty/main i386 Packages
Hit http://ie.archive.ubuntu.com trusty/restricted i386 Packages
Hit http://old-releases.ubuntu.com raring/universe Translation-en
Hit http://ie.archive.ubuntu.com trusty/universe i386 Packages
Hit http://ie.archive.ubuntu.com trusty/multiverse i386 Packages
Hit http://ie.archive.ubuntu.com trusty/main Translation-en
Hit http://ie.archive.ubuntu.com trusty/multiverse Translation-en
Hit http://ie.archive.ubuntu.com trusty/restricted Translation-en
Hit http://ie.archive.ubuntu.com trusty/universe Translation-en
Get:3 http://ie.archive.ubuntu.com trusty-updates/main Sources [152 kB]
Ign http://old-releases.ubuntu.com raring/main Translation-en_IE
Ign http://ppa.launchpad.net trusty/main Translation-en_IE
Get:4 http://ie.archive.ubuntu.com trusty-updates/restricted Sources [2,061 B]
Ign http://old-releases.ubuntu.com raring/multiverse Translation-en_IE
Ign http://ppa.launchpad.net trusty/main Translation-en
Get:5 http://ie.archive.ubuntu.com trusty-updates/universe Sources [96.5 kB]
Ign http://old-releases.ubuntu.com raring/restricted Translation-en_IE
Ign http://ppa.launchpad.net trusty/main Translation-en_IE
Ign http://old-releases.ubuntu.com raring/universe Translation-en_IE
Ign http://ppa.launchpad.net trusty/main Translation-en
Get:6 http://ie.archive.ubuntu.com trusty-updates/multiverse Sources [3,543 B]
Get:7 http://ie.archive.ubuntu.com trusty-updates/main amd64 Packages [392 kB]
Get:8 http://ie.archive.ubuntu.com trusty-updates/restricted amd64 Packages [8,875 B]
Get:9 http://ie.archive.ubuntu.com trusty-updates/universe amd64 Packages [236 kB]
Get:10 http://ie.archive.ubuntu.com trusty-updates/multiverse amd64 Packages [9,370 B]
Get:11 http://ie.archive.ubuntu.com trusty-updates/main i386 Packages [384 kB]
Get:12 http://ie.archive.ubuntu.com trusty-updates/restricted i386 Packages [8,846 B]
Get:13 http://ie.archive.ubuntu.com trusty-updates/universe i386 Packages [237 kB]
Get:14 http://ie.archive.ubuntu.com trusty-updates/multiverse i386 Packages [9,553 B]
Hit http://ie.archive.ubuntu.com trusty-updates/main Translation-en
Hit http://ie.archive.ubuntu.com trusty-updates/multiverse Translation-en
Hit http://ie.archive.ubuntu.com trusty-updates/restricted Translation-en
Hit http://ie.archive.ubuntu.com trusty-updates/universe Translation-en
Hit http://ie.archive.ubuntu.com trusty-backports/main Sources
Hit http://ie.archive.ubuntu.com trusty-backports/restricted Sources
Hit http://ie.archive.ubuntu.com trusty-backports/universe Sources
Hit http://ie.archive.ubuntu.com trusty-backports/multiverse Sources
Hit http://ie.archive.ubuntu.com trusty-backports/main amd64 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/restricted amd64 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/universe amd64 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/multiverse amd64 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/main i386 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/restricted i386 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/universe i386 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/multiverse i386 Packages
Hit http://ie.archive.ubuntu.com trusty-backports/main Translation-en
Hit http://ie.archive.ubuntu.com trusty-backports/multiverse Translation-en
Hit http://ie.archive.ubuntu.com trusty-backports/restricted Translation-en
Hit http://ie.archive.ubuntu.com trusty-backports/universe Translation-en
Ign http://ie.archive.ubuntu.com trusty/main Translation-en_IE
Ign http://ie.archive.ubuntu.com trusty/multiverse Translation-en_IE
Ign http://ie.archive.ubuntu.com trusty/restricted Translation-en_IE
Ign http://ie.archive.ubuntu.com trusty/universe Translation-en_IE
Err http://security.ubuntu.com trusty-security InRelease
Err http://security.ubuntu.com trusty-security Release.gpg
Could not resolve 'security.ubuntu.com'
Err http://dl.google.com stable InRelease
Err http://dl.google.com stable Release.gpg
Could not resolve 'dl.google.com'
Err http://linux.dropbox.com trusty InRelease
Err http://linux.dropbox.com trusty Release.gpg
Could not resolve 'linux.dropbox.com'
Err http://extras.ubuntu.com trusty InRelease
Err http://extras.ubuntu.com trusty Release.gpg
Could not resolve 'extras.ubuntu.com'
Fetched 1,602 kB in 40s (39.9 kB/s)
Reading package lists... Done
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/InRelease
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty/InRelease
W: Failed to fetch http://linux.dropbox.com/ubuntu/dists/trusty/InRelease
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/InRelease
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/Release.gpg Could not resolve 'security.ubuntu.com'
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg Could not resolve 'dl.google.com'
W: Failed to fetch http://linux.dropbox.com/ubuntu/dists/trusty/Release.gpg Could not resolve 'linux.dropbox.com'
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty/Release.gpg Could not resolve 'extras.ubuntu.com'
W: Some index files failed to download. They have been ignored, or old ones used instead.