import re

string='/x/eng/wcov/Job148666--rollup_generic/Job148674--ncov_aggregate/Job148678--run_command/Job148678.info:  devN_180107_2035'

line2=re.findall(r'(?:/w*)' ,string)
print(line2)

['/x', '/eng', '/wcov', '/Job148666', '/Job148674', '/Job148678', '/Job148678']

/x/eng/wcov/Job148666--rollup_generic/Job148674--ncov_aggregate/Job148678--run_command/Job148678.info