1SHELL: line 0: syntax error: bad substitution
2SHELL: line 0: syntax error: bad substitution
3SHELL: line 0: syntax error: bad substitution
40
5SHELL: line 0: 1: bad variable name
6SHELL: line 0: 1: bad variable name
7SHELL: line 0: 1: bad variable name
8SHELL: line 0: 1: bad variable name
9_aa
10_aa
11_aa
12_aa
13_
14_
15_
16_word
17_word
18_
19_
20_
21_
22_word
23_fff
24_fff
25_fff
26_fff
27_fff
28