Question

example String :

/gasg/string

expected result : string

Characters to to remove: all characters between the “/” symbols including the symbols

Answer 1

With sed:

$ echo "/gasg/string" | sed -e 's/\/.*\///g'
string

With buil-in bash string manipulation:

$ s="/gag/string"
$ echo "${s##/*/}"
string

Your strings look exactly like Unix pathnames. That’s why you could also use the basename utility – it returnes the last portion of the given Unix pathname:

$ basename "/gag/string"
string
# It works with relative paths and spaces too:
$ basename "gag/fas das/string bla bla"
string bla bla