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The way to run a shell command with awk variables by concatenation:

message="foobar"
cmd="echo \047"message"\047 | cut -c 3
if ( (cmd | getline m) > 0 ) { print m }
else { print "Failed ..." | "cat>&2"; exit 1}
close(cmd)

Thanks Ed Morton, my first attempt was:

message="foobar"
"echo "message" | cut -c 3 | getline m
print m

The way to run a shell command with awk variables by concatenation:

message="foobar"
cmd="echo \047"message"\047 | cut -c 3"
if ( (cmd | getline m) > 0 ) { print m }
else { print "Failed ..." | "cat>&2"; exit 1}
close(cmd)

Thanks Ed Morton, my first attempt was:

message="foobar"
"echo "message" | cut -c 3" | getline m
print m

The way to run a shell command with awk variables by concatenation:

message="foobar"
cmd="echo \047"message"\047 | cut -c "$((i+1))
if ( (cmd | getline m) > 0 ) { print m }
else { print "Failed ..." | "cat>&2"; exit 1}
close(cmd)

Thanks Ed Morton, my first attempt was:

message="foobar"
"echo "message" | cut -c "$((i+1)) | getline m
print m

The way to run a shell command with awk variables by concatenation:

message="foobar"
cmd="echo \047"message"\047 | cut -c 3
if ( (cmd | getline m) > 0 ) { print m }
else { print "Failed ..." | "cat>&2"; exit 1}
close(cmd)

Thanks Ed Morton, my first attempt was:

message="foobar"
"echo "message" | cut -c 3 | getline m
print m

The way to run a shell command with awk variables by concatenation:

message="ABC"
cmd="echo \047"message"\047 | cut -c 3"
if ( (cmd | getline m) > 0 ) { print m }
else { print "Failed ..." | "cat>&2"; exit 1}
close(cmd)

Thanks Ed Morton.

The way to run a shell command with awk variables by concatenation:

message="foobar"
cmd="echo \047"message"\047 | cut -c "$((i+1))
if ( (cmd | getline m) > 0 ) { print m }
else { print "Failed ..." | "cat>&2"; exit 1}
close(cmd)

Thanks Ed Morton, my first attempt was:

message="foobar"
"echo "message" | cut -c "$((i+1)) | getline m
print m