checks if the file exists before trying the command
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@ -6,11 +6,11 @@ date_default_timezone_set(@date_default_timezone_get());
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$hostname = php_uname('n');
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// OS
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if (!($os = shell_exec('/usr/bin/lsb_release -ds | cut -d= -f2 | tr -d \'"\'')))
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if (!file_exists('/usr/bin/lsb_release') || !($os = shell_exec('/usr/bin/lsb_release -ds | cut -d= -f2 | tr -d \'"\'')))
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{
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if (!($os = shell_exec('cat /etc/system-release | cut -d= -f2 | tr -d \'"\'')))
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if (!file_exists('/etc/system-release') || !($os = shell_exec('cat /etc/system-release | cut -d= -f2 | tr -d \'"\'')))
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{
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if (!($os = shell_exec('cat /etc/os-release | grep PRETTY_NAME | tail -n 1 | cut -d= -f2 | tr -d \'"\'')))
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if (!file_exists('/etc/os-release') || !($os = shell_exec('cat /etc/os-release | grep PRETTY_NAME | tail -n 1 | cut -d= -f2 | tr -d \'"\'')))
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{
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if (!($os = shell_exec('find /etc/*-release -type f -exec cat {} \; | grep PRETTY_NAME | tail -n 1 | cut -d= -f2 | tr -d \'"\'')))
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{
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