The type command determines how a command name is interpreted. It can also be used to check if a command exists. For example, the above code is similar to the previous two but uses the type -p command to check if the grep command exists. ...
Check whether a given system command is installed (e.g, bash)Nicholas Cooper
/bin/bash# Create a symbolic link named "dir_link" pointing to "workarea"ln-s workarea dir_link# Check if the symbolic link was created successfullyif[-L"dir_link"];thenecho"Symbolic link 'dir_link' created successfully."elseecho"Failed to create symbolic link 'dir_link'."fi Copy Output...
With theenvcommand you can always only view the current shell’s environment. If you suspect there is an error in a particular process’s environment, with a small trick you can nonetheless output a listing of its environment. For this you only need the process-ID (PID). You can identify...
To do this, simply run /usr/sbin/nhc with no parameters. Successful execution will result in no output and an exit code of 0. If this is what you get, you're done testing! Skip to the next section.If you receive an error, it will look similar to the following:ERROR Health check ...
Learn how you canleverage Azure automation, PowerShell, run command, and many other Azure management solutions for your on-premises Windows Servers. Thomas Maurer, Senior Program Manager and Chief Evangelist Azure Hybrid, and Ryan Willis, Product Manager for Azure Arc, will share how to...
Install the OSS command-line tool ossutil in the container. For more information, see Install ossutil. In this example, the user of the 64-bit CentOS wants to download the logs. If the application is not connected to the Internet, the root user must download the log file to t...
LCM precheck fails for PSC SSO account if the Maximum lifetime password policy for vCenter local accounts is set to a number greater than 9999 The precheck failure is as below "VC/PSC password is expired for "VCName". SSH to "VCName",switch to bash shell using command 'shell' and ru...
mysqldump: command not found问题解决 首先得知道mysql命令或mysqldump命令的完整路径,可以使用find命令查找 除非你知道mysql安装路径可以略过这一步。 find/-name mysql-print 1. 例如我的mysql的路径是:/usr/local/mysql/bin/mysql,然后映射一个链接到/usr/bin目录下,相当于建立一个链接文件 ...
If -B is given, <new_branch> is created if it doesn't exist; otherwise, it is reset. This is the transactional equivalent of $ git branch -f <branch> [<start point>] $ git checkout <branch> that is to say, the branch is not reset/created unless "git checkout" is successful. ...