Hello there, 

I would like to extract a part of the path of the executed script ($0) in a 
variable, e.g. if the script was run as /some/path/getty-tty1/run, I would like 
to extract "tty1" from the path, or similary, extract "dropbear" from 
/some/path/dropbear-log/run. This would allow to write templated services quite 
easily using symlinks. However, I noticed there is no substitution nor sed 
equivalent in the execline/s6 tool suite ; even a grep-like tool that output 
capturing groups would do the trick. I think it would be doable with the 
existing set of tools but would be quite heavy. 

Does anyone have an idea about this ? 

Best regards, 

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