eval command in Linux with Examples Last Updated : 10 Oct, 2024 Comments Improve Suggest changes Like Article Like Report eval is a built-in Linux command that executes arguments as a shell command. It combines arguments into a single string, uses it as input to the shell, and executes the commands. Syntaxeval [arg ...]Here, arg can be one or more arguments that eval will process and combine into a single shell command. Once combined, eval will pass this string to the shell for execution.Basic ExampleThe figure below shows that cd Desktop command is stored in a variable "CD" as a shell command. Now you can use this "CD" as an argument with eval command. Important Options for the eval CommandThe eval command itself does not have many options. However, you can use the following common options to help with command understanding and debugging:OptionDescription--helpDisplays help information for eval.--versionDisplays the version of eval.To access the help information, use the following command:eval --helpConclusionThe eval command in Linux is a powerful tool for executing dynamic commands. If you're storing commands in variables, constructing commands programmatically, or automating tasks, eval provides flexibility and control over how commands are executed. However, eval should be used carefully to avoid security risks like command injection. With proper use, eval can significantly enhance your scripting and automation tasks in Linux. Comment More infoAdvertise with us D DrRoot_ Follow Improve Article Tags : Technical Scripter Linux-Unix Technical Scripter 2018 linux-command Linux-Shell-Commands +1 More Similar Reads dosfsck command in Linux with Examples dosfsck stands for DOS File System Consistency Check and is part of the dosfstools package in Unix-like operating systems. This command diagnoses and repairs MS-DOS filesystems (FAT12, FAT16, FAT32). Before running dosfsck, it is crucial to unmount the filesystem to avoid data corruption.Syntax:dosf 4 min read dstat Command in Linux With Examples dstat is a tool that is used to retrieve information or statistics form components of the system such as network connections, IO devices, or CPU, etc. It is generally used by system administrators to retrieve a handful of information about the above-mentioned components of the system. 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