3 [[ $VAR =~ '[[:alpha:]]' ]] && echo match 1
5 [[ a =~ '[[:alpha:]]' ]] || echo match 2
7 [[ a =~ [[:alpha:]] ]] && echo match 3
9 [[ a =~ $VAR ]] && echo match 4
11 [[ a =~ "$VAR" ]] || echo match 5
14 [[ $line =~ [[:space:]]*(a)?b ]] && echo match 6
17 [[ $V == alphabet ]] && echo yes 1
18 [[ $V == "alphabet" ]] && echo yes 2
19 [[ $V == 'alphabet' ]] && echo yes 3
20 [[ $V =~ alphabet ]] && echo yes 4
21 [[ $V =~ "alphabet" ]] && echo yes 5
22 [[ $V =~ 'alphabet' ]] && echo yes 6
24 DOG="Dog name - 01 - Wiggles"
25 REPAT='([[:alpha:][:blank:]]*)- ([[:digit:]]*) - (.*)$'
26 if [[ $DOG =~ ([[:alpha:][:blank:]]*)-\ ([[:digit:]]*)\ -\ (.*)$ ]]
28 echo Dog ${BASH_REMATCH[2]} is ${BASH_REMATCH[3]}
30 if [[ $DOG =~ $REPAT ]]
32 echo Dog ${BASH_REMATCH[2]} is ${BASH_REMATCH[3]}
35 [[ $REPAT =~ "$REPAT" ]] && echo rematch 1
37 v="one two buckle my shoe"
38 [[ ${v} =~ "one two" ]] && echo matches 7
40 [[ ${v} =~ (one two) ]] && echo matches 8
42 [[ ${v} =~ one\ two ]] && echo matches 9