linux - Unexpected behavior with "set -o errexit" on AIX -

this script shell works fine on gnu/linux not on aix 5.3

#!/bin/sh  echo $shell  set -o nounset -o errexit  [ 1 -eq 1 ] && {   echo "zzz" } && echo "aaa" && [ 1 -eq 0 ] && echo "bbb" echo "ccc" 

on gnu/linux, i've got expected output :

/bin/bash zzz aaa ccc 

on aix, i've got 1 :

/bin/ksh zzz aaa 

without "set -o nounset -o errexit" works fine... don't understant why. explain me wrong in script shell.

thanks,

rémy

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edit 18 nov. : precision

set -e when option on, if simple command fails of reasons listed in consequences of shell errors or returns exit status value >0, , not part of compound list following while, until, or if keyword, , not part of , or or list, , not pipeline preceded ! reserved word, shell shall exit. http://explainshell.com/explain?cmd=set+-e

in example, second test "[ 1 -eq 0 ]" part of and, should see output "ccc". test returns 1, traps output "bbb", should'nt exit script.

rémy

have same behavior on aix 6 , 7

rémy