Reducing shifts in entrypoint

[Chemaclass]

🔖 Changes

• move time attr to unique line
• simplify case in entrypoint reducing shifts

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shift is a bash built-in which kind of removes arguments from the beginning of the argument list. Given that the 3 arguments provided to the script are available in $1, $2, $3, then a call to shift will make $2 the new $1. A shift 2 will shift by two making new $1 the old $3.
source: https://unix.stackexchange.com/a/174568