There was a script that had been working properly, and suddenly it reported an error

eval: line 1: syntax error: unterminated quoted string

Eval is a simple eval. After filtering the contents of the script, I found a suspected code.

eval $(echo $line 2>/dev/null |awk '{print "iosOs="$13";iosDev="$14}')

Looked at the

l

i

n

e

this

a

change

The amount

.

in

one

some

love

Besides,

Under the

and

no

There are

the

?

more

word

Period of

.

on

surface

life

make

to

o

single

a

The variable line, in some cases, does not have as many fields as the above command requires

Line is a variable that, in some cases, does not have as many fields. The above command requires a single line to have at least 14 fields. If not, an error will be reported.
after the code or to do enough fault tolerance, when the external input will change, cut.