Echo'ing into a file only works with root and not sudo
I have a directory /sys/class/leds/
with the file bananapro:green:usr/trigger
that controls an (green) onboard led. The contents of this file just contains the modes for the led. As root, I can run echo "default-on" > /sys/class/leds/bananapro:green:usr/trigger
and have the led turn on. If I try to do this from a different user, I get the following responce from bash;
bash: /sys/class/leds/bananapro:green:usr/trigger: Permission denied
I have tried also running using
sudo bash -c echo "<command>"
from the non root user (with sudo access)
Any recommendations on getting file permissions for users other than root
I do apologize in advance for my horrid formatting
permissions sudo root echo
add a comment |
I have a directory /sys/class/leds/
with the file bananapro:green:usr/trigger
that controls an (green) onboard led. The contents of this file just contains the modes for the led. As root, I can run echo "default-on" > /sys/class/leds/bananapro:green:usr/trigger
and have the led turn on. If I try to do this from a different user, I get the following responce from bash;
bash: /sys/class/leds/bananapro:green:usr/trigger: Permission denied
I have tried also running using
sudo bash -c echo "<command>"
from the non root user (with sudo access)
Any recommendations on getting file permissions for users other than root
I do apologize in advance for my horrid formatting
permissions sudo root echo
add a comment |
I have a directory /sys/class/leds/
with the file bananapro:green:usr/trigger
that controls an (green) onboard led. The contents of this file just contains the modes for the led. As root, I can run echo "default-on" > /sys/class/leds/bananapro:green:usr/trigger
and have the led turn on. If I try to do this from a different user, I get the following responce from bash;
bash: /sys/class/leds/bananapro:green:usr/trigger: Permission denied
I have tried also running using
sudo bash -c echo "<command>"
from the non root user (with sudo access)
Any recommendations on getting file permissions for users other than root
I do apologize in advance for my horrid formatting
permissions sudo root echo
I have a directory /sys/class/leds/
with the file bananapro:green:usr/trigger
that controls an (green) onboard led. The contents of this file just contains the modes for the led. As root, I can run echo "default-on" > /sys/class/leds/bananapro:green:usr/trigger
and have the led turn on. If I try to do this from a different user, I get the following responce from bash;
bash: /sys/class/leds/bananapro:green:usr/trigger: Permission denied
I have tried also running using
sudo bash -c echo "<command>"
from the non root user (with sudo access)
Any recommendations on getting file permissions for users other than root
I do apologize in advance for my horrid formatting
permissions sudo root echo
permissions sudo root echo
asked 4 mins ago
pcs3rdpcs3rd
134
134
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f497131%2fechoing-into-a-file-only-works-with-root-and-not-sudo%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f497131%2fechoing-into-a-file-only-works-with-root-and-not-sudo%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown