Replace "echo -e" with "printf" to have the same behavior in dash or bash

oe-core removed the prerequisite to have sh as bash. POSIX doesn't define
any options and furthermore allows 'echo -e' to be the default behavior.
This means that in dash 'echo -e' will actually print '-e' and interpret
backslashes by default. We use instead 'printf' builtin command with or
without '\n' to simulate 'echo -e' or 'echo -n'.
'printf' needs format while 'echo' can be used without any arguments. So
'echo >' was replaced by 'printf "" >'.
'echo' without '-n' flag adds a new line by default so to keep the same
behavior of two new lines while using 'echo "\n"', 'printf "\n\n"' is
used.

[YOCTO #3138]

(From OE-Core rev: a19880ad10ccb5d7d909dcf9de5c3dc58a0ebcd3)

Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/meta/recipes-core/base-files/base-files_3.0.14.bb b/meta/recipes-core/base-files/base-files_3.0.14.bb
index e80cff1790..ba355ee07c 100644
--- a/meta/recipes-core/base-files/base-files_3.0.14.bb
+++ b/meta/recipes-core/base-files/base-files_3.0.14.bb
@@ -117,11 +117,11 @@ do_install_basefilesissue () {
 
         install -m 644 ${WORKDIR}/issue*  ${D}${sysconfdir}  
         if [ -n "${DISTRO_NAME}" ]; then
-                echo -n "${DISTRO_NAME} " >> ${D}${sysconfdir}/issue
-                echo -n "${DISTRO_NAME} " >> ${D}${sysconfdir}/issue.net
+                printf "${DISTRO_NAME} " >> ${D}${sysconfdir}/issue
+                printf "${DISTRO_NAME} " >> ${D}${sysconfdir}/issue.net
                 if [ -n "${DISTRO_VERSION}" ]; then
-                        echo -n "${DISTRO_VERSION} " >> ${D}${sysconfdir}/issue
-                        echo -n "${DISTRO_VERSION} " >> ${D}${sysconfdir}/issue.net
+                        printf "${DISTRO_VERSION} " >> ${D}${sysconfdir}/issue
+                        printf "${DISTRO_VERSION} " >> ${D}${sysconfdir}/issue.net
                 fi
                 echo "\n \l" >> ${D}${sysconfdir}/issue
                 echo >> ${D}${sysconfdir}/issue