[PATCH] scripts: dtc-version: Don't show error messages

Prevent the error messages produced by which(1), such as the one quoted below, from being visible in the build outputs.
which: no dtc in (./scripts/dtc)
This makes the build outputs look a tiny bit cleaner.
Signed-off-by: Dragan Simic dsimic@manjaro.org --- scripts/dtc-version.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/dtc-version.sh b/scripts/dtc-version.sh index 53ff868bcdce..6d3d7b68fdfa 100755 --- a/scripts/dtc-version.sh +++ b/scripts/dtc-version.sh @@ -15,7 +15,7 @@ if [ ${#dtc} -eq 0 ]; then exit 1 fi
-if ! which $dtc >/dev/null ; then +if ! which $dtc >/dev/null 2>/dev/null ; then echo "Error: Cannot find dtc: $dtc" exit 1 fi

Hi Dragan,
On 2/6/24 04:56, Dragan Simic wrote:
[You don't often get email from dsimic@manjaro.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
Prevent the error messages produced by which(1), such as the one quoted below, from being visible in the build outputs.
which: no dtc in (./scripts/dtc)
This makes the build outputs look a tiny bit cleaner.
Signed-off-by: Dragan Simic dsimic@manjaro.org
scripts/dtc-version.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/dtc-version.sh b/scripts/dtc-version.sh index 53ff868bcdce..6d3d7b68fdfa 100755 --- a/scripts/dtc-version.sh +++ b/scripts/dtc-version.sh @@ -15,7 +15,7 @@ if [ ${#dtc} -eq 0 ]; then exit 1 fi
-if ! which $dtc >/dev/null ; then +if ! which $dtc >/dev/null 2>/dev/null ; then
What about
which $dtc > /dev/null 2>&1
instead?
In any case,
Reviewed-by: Quentin Schulz quentin.schulz@theobroma-systems.com
Thanks, Quentin

Hello Quentin,
On 2024-02-06 11:25, Quentin Schulz wrote:
On 2/6/24 04:56, Dragan Simic wrote:
Prevent the error messages produced by which(1), such as the one quoted below, from being visible in the build outputs.
which: no dtc in (./scripts/dtc)
This makes the build outputs look a tiny bit cleaner.
Signed-off-by: Dragan Simic dsimic@manjaro.org
scripts/dtc-version.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/dtc-version.sh b/scripts/dtc-version.sh index 53ff868bcdce..6d3d7b68fdfa 100755 --- a/scripts/dtc-version.sh +++ b/scripts/dtc-version.sh @@ -15,7 +15,7 @@ if [ ${#dtc} -eq 0 ]; then exit 1 fi
-if ! which $dtc >/dev/null ; then +if ! which $dtc >/dev/null 2>/dev/null ; then
What about
which $dtc > /dev/null 2>&1
instead?
That's exactly what I intended to use, but IIRC some shells or some older versions of some shells may not recognize that, so I went with a more verbose, but slightly safer option.
Reviewed-by: Quentin Schulz quentin.schulz@theobroma-systems.com
Thanks for your review.

Hi Dragan,
On 2/6/24 11:37, Dragan Simic wrote:
[You don't often get email from dsimic@manjaro.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
Hello Quentin,
On 2024-02-06 11:25, Quentin Schulz wrote:
On 2/6/24 04:56, Dragan Simic wrote:
Prevent the error messages produced by which(1), such as the one quoted below, from being visible in the build outputs.
which: no dtc in (./scripts/dtc)
This makes the build outputs look a tiny bit cleaner.
Signed-off-by: Dragan Simic dsimic@manjaro.org
scripts/dtc-version.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/dtc-version.sh b/scripts/dtc-version.sh index 53ff868bcdce..6d3d7b68fdfa 100755 --- a/scripts/dtc-version.sh +++ b/scripts/dtc-version.sh @@ -15,7 +15,7 @@ if [ ${#dtc} -eq 0 ]; then exit 1 fi
-if ! which $dtc >/dev/null ; then +if ! which $dtc >/dev/null 2>/dev/null ; then
What about
which $dtc > /dev/null 2>&1
instead?
That's exactly what I intended to use, but IIRC some shells or some older versions of some shells may not recognize that, so I went with a more verbose, but slightly safer option.
$ git -c core.pager='' grep "2>&1" scripts scripts/Kbuild.include: if (which $(strip $(c))$(CC)) > /dev/null 2>&1 ; then \ scripts/Kbuild.include: if ($(1)) >/dev/null 2>&1; \ scripts/Kbuild.include:cc-name = $(shell $(CC) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc) scripts/Kconfig.include:if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)") scripts/checkpatch.pl: $maintained_status{$filename} = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`; scripts/checkpatch.pl: my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`; scripts/coccicheck:echo $SPFLAGS | grep -Ee "--profile|--show-trying" 2>&1 > /dev/null scripts/decodecode: ${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1 scripts/decodecode: grep -v "/tmp|Disassembly|.text|^$" > $1.dis 2>&1 scripts/gcc-stack-usage.sh:cat <<END | $@ -Werror -fstack-usage -x c - -c -o $TMP >/dev/null 2>&1 \ scripts/get_maintainer.pl: my $output = `git ls-remote --exit-code -h "$url" $branch > /dev/null 2>&1`; scripts/get_maintainer.pl: $cmd .= " 2>&1"; scripts/kernel-doc: open IN, "$cmd --version 2>&1 |";
So we're probably fine?
Cheers, Quentin

On 2024-02-06 11:41, Quentin Schulz wrote:
On 2/6/24 11:37, Dragan Simic wrote:
On 2024-02-06 11:25, Quentin Schulz wrote:
On 2/6/24 04:56, Dragan Simic wrote:
Prevent the error messages produced by which(1), such as the one quoted below, from being visible in the build outputs.
which: no dtc in (./scripts/dtc)
This makes the build outputs look a tiny bit cleaner.
Signed-off-by: Dragan Simic dsimic@manjaro.org
scripts/dtc-version.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/dtc-version.sh b/scripts/dtc-version.sh index 53ff868bcdce..6d3d7b68fdfa 100755 --- a/scripts/dtc-version.sh +++ b/scripts/dtc-version.sh @@ -15,7 +15,7 @@ if [ ${#dtc} -eq 0 ]; then exit 1 fi
-if ! which $dtc >/dev/null ; then +if ! which $dtc >/dev/null 2>/dev/null ; then
What about
which $dtc > /dev/null 2>&1
instead?
That's exactly what I intended to use, but IIRC some shells or some older versions of some shells may not recognize that, so I went with a more verbose, but slightly safer option.
$ git -c core.pager='' grep "2>&1" scripts scripts/Kbuild.include: if (which $(strip $(c))$(CC)) > /dev/null 2>&1 ; then \ scripts/Kbuild.include: if ($(1)) >/dev/null 2>&1; \ scripts/Kbuild.include:cc-name = $(shell $(CC) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc) scripts/Kconfig.include:if-success = $(shell,{ $(1); } >/dev/null 2>&1 && echo "$(2)" || echo "$(3)") scripts/checkpatch.pl: $maintained_status{$filename} = `perl $root/scripts/get_maintainer.pl --status --nom --nol --nogit --nogit-fallback -f $filename 2>&1`; scripts/checkpatch.pl: my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`; scripts/coccicheck:echo $SPFLAGS | grep -Ee "--profile|--show-trying" 2>&1 > /dev/null scripts/decodecode: ${CROSS_COMPILE}as $AFLAGS -o $1.o $1.s > /dev/null 2>&1 scripts/decodecode: grep -v "/tmp|Disassembly|.text|^$" > $1.dis 2>&1 scripts/gcc-stack-usage.sh:cat <<END | $@ -Werror -fstack-usage -x c - -c -o $TMP >/dev/null 2>&1 \ scripts/get_maintainer.pl: my $output = `git ls-remote --exit-code -h "$url" $branch > /dev/null 2>&1`; scripts/get_maintainer.pl: $cmd .= " 2>&1"; scripts/kernel-doc: open IN, "$cmd --version 2>&1 |";
So we're probably fine?
Obviously. :) I'll send the v2.
participants (2)
-
Dragan Simic
-
Quentin Schulz