Cfxtrjtrk

I have my little script to start an application and do some more things on my Ubuntu 16.04 which looks like this:

#!/bin/bash

./ROC-smi/rocm-smi -d 1 --setfan 90

./ROC-smi/rocm-smi -d 0 --setfan 90

./ROC-smi/rocm-smi -d 2 --setfan 110

./ROC-smi/rocm-smi -d 3 --setfan 110

./ROC-smi/rocm-smi -d 4 --setfan 110

cd teamredminer-v0.4.1-linux

/usr/bin/screen -dm ./teamredminer --algo=cnr --url=*** --user=*** --pass=*** --watchdog_script

I want to autostart it with sudo. I tried rc.local with:

sh /path/to/my/script.sh

exit 0

I also tried using crontab with:

@reboot /path/to/my/script.sh

nothing worked, rc.local didn't show any errors when I tested it with
sudo /etc/init.d/rc.local start, but when I type sudo screen -xr or screen -ls or sudo screen -ls, I always got a message that there's no screen to attach.

I see there might be two problems with what you're doing.

1. Check your scrip has permission to run

Just chmod-it like

    chmod +x /path/to/my/script.sh

    chmod +x /path/to/ROC-smi/rocm-smi

Otherwise it won't run.

2. Fix wrong paths

When you have ./ROC-smi/rocm-smi you're telling bash to run ROC-smi/rocm-smi from the path you're calling the script, not from where the script is located. This means that if you call the script from /root, bash will look for /root/ROC-smi/rocm-smi and not for /path/to/my/script/ROC-smi/rocm-smi.

The most straightforward solution is

    #!/bin/bash

    /absolute/path/to/ROC-smi/rocm-smi -d 1 --setfan 90

    /absolute/path/to/ROC-smi/rocm-smi -d 0 --setfan 90

    /absolute/path/to/ROC-smi/rocm-smi -d 2 --setfan 110

    /absolute/path/to/ROC-smi/rocm-smi -d 3 --setfan 110

    /absolute/path/to/ROC-smi/rocm-smi -d 4 --setfan 110

    cd /absolute/path/to/teamredminer-v0.4.1-linux

    /usr/bin/screen -dm ./teamredminer --algo=cnr --url=*** --user=*** --pass=*** --watchdog_script

However, if that script can run from anywhere, this quick patch will do as pointed out in this answer

    #!/bin/bash

    scriptdir="$(dirname "$0")"

    cd $scriptdir"

    ROC-smi/rocm-smi -d 1 --setfan 90

    ...

Now, $0 is unreliable (see here) so perhaps you want to try cd "${BASH_SOURCE%/*}" instead. I would try

    #!/bin/bash

    cd ${BASH_SOURCE%/*}

    ROC-smi/rocm-smi -d 1 --setfan 90

    ROC-smi/rocm-smi -d 0 --setfan 90

    ROC-smi/rocm-smi -d 2 --setfan 110

    ROC-smi/rocm-smi -d 3 --setfan 110

    ROC-smi/rocm-smi -d 4 --setfan 110

    cd /absolute/path/to/teamredminer-v0.4.1-linux

    /usr/bin/screen -dm ./teamredminer --algo=cnr --url=*** --user=*** --pass=*** --watchdog_script