ar:tldr:42f0e
ar: In[s]ert an object file index (equivalent to using `ranlib`).
$ ar s ${filename-a}
try on your machine
The command "ar s ${filename-a}" performs the following actions:
- The command uses the "ar" utility, which is used to create, modify, and extract files from an archive.
- The "s" option in the command instructs "ar" to create an archive index or update an existing index for the specified archive file.
- "${filename-a}" is a shell variable placeholder that represents the name of the archive file.
- If the variable "filename" has a value assigned, it will be used as the name of the archive file.
- If the variable "filename" is not assigned a value, the letter "a" will be used as the default name for the archive file.
Overall, this command creates or updates the index of an archive file, where the name of the archive file is either provided as a parameter or defaulted to "a".
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.