> -----Original Message----- > From: Anders Roxell > > When running tcp_fastopen_backup_key.sh the following issue was seen in > a busybox environment. > ./tcp_fastopen_backup_key.sh: line 33: [: -ne: unary operator expected > > Shellcheck showed the following issue. > $ shellcheck tools/testing/selftests/net/tcp_fastopen_backup_key.sh > > In tools/testing/selftests/net/tcp_fastopen_backup_key.sh line 33: > if [ $val -ne 0 ]; then > ^-- SC2086: Double quote to prevent globbing and word splitting. > > Rework to add double quotes around the variable 'val' that shellcheck > recommends. > > Signed-off-by: Anders Roxell <anders.roxell@xxxxxxxxxx> > --- > tools/testing/selftests/net/tcp_fastopen_backup_key.sh | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > index 41476399e184..ba5ec3eb314e 100755 > --- a/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > +++ b/tools/testing/selftests/net/tcp_fastopen_backup_key.sh > @@ -30,7 +30,7 @@ do_test() { > ip netns exec "${NETNS}" ./tcp_fastopen_backup_key "$1" > val=$(ip netns exec "${NETNS}" nstat -az | \ > grep TcpExtTCPFastOpenPassiveFail | awk '{print $2}') > - if [ $val -ne 0 ]; then > + if [ "$val" -ne 0 ]; then Did you test this in the failing environment? With a busybox shell, I get: $ [ "" -ne 0 ] sh: bad number You might need to explicitly check for empty string here, or switch to a string comparison instead: if [ "$val" != 0 ]; then -- Tim > echo "FAIL: TcpExtTCPFastOpenPassiveFail non-zero" > return 1 > fi > -- > 2.20.1