bash: /etc/profile: Insufficient permissions

When adding environment variables, it shows no permission
echo “export PATH="/usr/local/ARM-toolchain/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf/bin/:$PATH"" >> /etc /profile

bash: /etc/profile: insufficient permissions
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sudo chmod 777 /etc/profile

echo “export PATH=”/usr/local/ARM-toolchain/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf/bin/:$PATH"" >> /etc/profile

source /etc/profile

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Origin blog.csdn.net/qq_41483419/article/details/131923527