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selftests: ftrace: Check given string is not zero-length

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Use [ ! -z "$VAR" ] instead of [ "$VAR" ] to check
whether the given string variable is not zero-length
since it obviously shows what it means.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <srostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Masami Hiramatsu 2017-07-07 10:03:36 +09:00 committed by Shuah Khan
parent 97bece60ef
commit 97e4936851
1 changed files with 3 additions and 3 deletions
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6
tools/testing/selftests/ftrace/ftracetest
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@ -8,7 +8,7 @@
# Released under the terms of the GPL v2.
usage() { # errno [message]
[ "$2" ] && echo $2
[ ! -z "$2" ] && echo $2
echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
echo " Options:"
echo " -h|--help Show help message"
@ -50,7 +50,7 @@ parse_opts() { # opts
local OPT_TEST_CASES=
local OPT_TEST_DIR=
while [ "$1" ]; do
while [ ! -z "$1" ]; do
case "$1" in
--help|-h)
usage 0
@ -96,7 +96,7 @@ parse_opts() { # opts
;;
esac
done
if [ "$OPT_TEST_CASES" ]; then
if [ ! -z "$OPT_TEST_CASES" ]; then
TEST_CASES=$OPT_TEST_CASES
fi
}