base-files: profile: Avoid using "command" to determine if programs exist

Since the existence of "command" in itself is not guaranteed, using it
to determine if other executables exist is moot. Instead just run the
executables and let the shell determine if they exist. By piping stderr
to /dev/null we avoid unnecessary warnings in case they do not exist.

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

1 files changed, 10 insertions, 8 deletions

diff --git a/meta/recipes-core/base-files/base-files/profile b/meta/recipes-core/base-files/base-files/profile
index a0620282267..e14cb2d8788 100644
--- a/meta/recipes-core/base-files/base-files/profile
+++ b/meta/recipes-core/base-files/base-files/profile
@@ -20,14 +20,16 @@ if [ -d /etc/profile.d ]; then
 	unset i
 fi
 
-if command -v resize >/dev/null && command -v tty >/dev/null; then
-	# Make sure we are on a serial console (i.e. the device used starts with
-	# /dev/tty[A-z]), otherwise we confuse e.g. the eclipse launcher which
-	# tries do use ssh
-	case $(tty) in
-		/dev/tty[A-z]*) resize >/dev/null;;
-	esac
-fi
+# Make sure we are on a serial console (i.e. the device used starts with
+# /dev/tty[A-z]), otherwise we confuse e.g. the eclipse launcher which tries do
+# use ssh
+case $(tty 2>/dev/null) in
+	# The first invocation of resize verifies that it exists, the second
+	# does the actual resizing. This is due to that resize uses stderr to
+	# determine the size of the tty, which does not work if it is redirected
+	# to /dev/null.
+	/dev/tty[A-z]*) resize >/dev/null 2>&1 && resize >/dev/null;;
+esac
 
 export PATH PS1 OPIEDIR QPEDIR QTDIR EDITOR TERM