Unfortunately I lost my source code and I just have the output file that made with gcc in linux and I don’t have any access to my pc now.is there any way to convert output file to source file (in c... The above executes the script. When the script is done, any changes that it made to the environment are discarded.

Understanding the Context

. script The above sources the script. It is as if the commands had been typed in directly. Any environment changes are kept.

Key Insights

source script This also sources the script. The source command is not required by POSIX and therefore is less portable than the shorter .. source is a shell keyword that is supposed to be used like this: source file where file contains valid shell commands. These shell commands will be executed in the current shell as if typed from the command line. Source vs .

Final Thoughts

why different behaviour? - Unix & Linux Stack Exchange You have an alias which is overriding the builtin source (fix with unalias source) You have a function which is overriding source (fix with unset -f source) You are somehow not using bash (although your bang line would suggest you are). source is not POSIX. Using source on dash does not work, only . works. bash script error: source: not found - Unix & Linux Stack Exchange I accidentally sourced the wrong environment from a script.

Is there any way to 'unsource' it or in other words to revert it and restore the previous environment? The obvious answer is to start fr... bash - Revert '.' or 'source' - Unix & Linux Stack Exchange