First, we think of the export (equivalent to declare-x) command:
$ export | grep ' Declare-x _= '
Not found, so the conclusion is _ is not an environment variable? Of course it's not that simple, otherwise this article should be over. And don't forget the env (or printenv) command:
$ env | grep ' _= '_=/usr/bin/env
W
Today, when installing and deploying the Oracle environment in Linux, I found a command line mutation problem. In fact, I encountered it before using Linux, but I never paid attention to it, I have consulted relevant Linux developers and said that there is no problem, so I have never looked for the reason. This time, I deployed the Oracle environment several times in Linux because the environment configuration was not OK, which caused me to repeat sev
Why is the Bash Security Vulnerability a global server attack?
On September 24, 2014, Bash experienced a critical security vulnerability, numbered CVE-2014-6271, that could cause remote attackers to execute arbitrary code on the affected system. GNU Bash is a Unix Shell com
client is not the same as the machine for the server, it is also a type of process: make the public key and place it in the/tmp directory of the service. Just on the same machine, we can operate two accounts simultaneously by turning on another terminal and using SU to switch to a local account.thingingdemacbook-air:~ git$ su thingingPassword:bash-3.2$ CD ~
After the system has been signed into this, so look not good, in fact, is a small problem:Original blog from: www.51niux.com bo: Busy Firewood lessThe following are the causes of this problem:We usually switch users in Linux after the command line will become-bash-3.2$, we have to analyze, this is related to the Linux mechanism, because every time the Linux under
, similar to makefile, etc, the Learning and maintenance costs of the strange syntax and symbols in bash, sed, awk, and make are really less than a few wordings in python, and python can be used to eliminate most of the requirements, otherwise, you have to switch back and forth between bash, sed, and awk.
However, if your script may only run once or run a temporary command, it
).(These is both main interface)How to get it?IEEE develope it.What is Windows missing? What does does Windows provide? -Windows NT Once try to compliant with POSIX (only posix.1), BU start with Windows XP the POSIX subsystem is no T included as part of the standard Windows distributions and have been replaced by Inter
-> WD)
Git diff (view the code difference between stage and WD)
Git diff-staged (view the code difference of History stage)
GIF diff head (view the code differences of History WD)
Notice: git diff -- stat can output brief diff information.
Remove files and change file names
Note: git does not recognize the fi
It's not long before you use git:
1)Different Application objects.Git is applicable to developers involved in open-source projects. Because of their high level, they are more concerned with efficiency rather than ease of use. SVN is different. It is suitable for common company development teams. It
Git is a distributed version control system, and the version control tools we use most often have SVN. Here we have to distinguish what is distributed version control system, what is centralized version control system.Centralized
The bash script is registered as a service and automatically started upon startup. the chkconfig command is used to update (start or stop) and query the running level information of the system service. Remember that chkconfig does not automatically disable or activate a service immediately, but simply changes the symbolic connection. Use the
For the git commit has been very cautious, feel accidentally will step on the inexplicable pit.It's not,One day commit encounters the on branch master nothing to commit (working directory clean)A look at the meaning. Is your branch clean?Clean? Excuse me?Then GIT push Origin master, a long wait for the pop-up fail:#¥%@ (omitted here, we value points)Please m
The specific method is as followsGit pull Origin branch // error occurred git stash // Restore git stash ClearDevelopers often encounter this situation: It took a few days to do a new function, has changed almost more than 10 files, suddenly a bug needs to be resolved urgently, and then to a build test group. It's often time-consuming and error-prone to rely on
On an online server, you do not know what operations have been performed. When you log on to the server,-bash-4.1 # does not display the path. So I searched for a solution on the internet. The following solution can solve the problem:Vim ~ /. Bash_profileAddExport PS1 = '[\ u @ \ h \ W] \ $'RunSource ~ /. Bash_profileOkay, it is back to normal.
Recently learned Git rebase, feel very cool appearance,It turned out to be a slap in the face today.
Git pull--rebase
Error:
Cannot rebase:you have unstaged changes please
commit or stash them.
The first reaction is:No. Can Yes. Just now it was clearly submitted. How can there be changes. Hysterical.
Finally with git status a look:
。。。。
I was wrong... Take
means that the system automatically merges the modified content, but there are conflicts that need to be resolved.
4. Resolve conflicting parts of the document
Open the conflicting file and you will see something similar to the following:
Git conflict contentGit conflict content
The content between updated upstream and ===== is the content of pull down, and the content between = = and stashed changes
Using the YII2 framework, I am used to using composer to install the plug-in. after installation, I found that the Directory of the plug-in is treated as a GIT sub-project. the tool holder is submitted to the GIT of the project, but it is just an empty directory. There are s
Earlier, we set up a command alias for git by setting git config variables such as ALIAS.CI. command aliases can help users resolve usage issues after migrating from another version control system to git. CVs and subversion are generally used when submitting, using the CI (check in) subcommand, which is used when check
the system automatically merges the modified content, but there are conflicts that need to be resolved.4. Resolve conflicting parts of the documentOpen the conflicting file and you will see something similar to the following:Git conflict contentThe content between updated upstream and ===== is the content of pull down, and the content between = = and stashed changes is locally modified content. In this cas
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