npm installation of mbt issue

[DanieleStrafile]

Please provide the following info:

• MBT Version: v1.0.1
• OS Version: "Ubuntu 18.04.2 LTS"

Steps to Reproduce:

1.npm install -g mbt
2.Got (https://github.com/SAP/cloud-mta-build-tool/files/3900865/log_file.zip)
an error, permission denied to use command mkdir

ERR { Error: EACCES: permission denied, mkdir '/usr/lib/node_modules/mbt/unpacked_bin'
at Object.fs.mkdirSync (fs.js:885:18)
at /usr/lib/node_modules/mbt/node_modules/binwrap/binstall.js:46:10
at new Promise ()
at untgz (/usr/lib/node_modules/mbt/node_modules/binwrap/binstall.js:21:10)
at binstall (/usr/lib/node_modules/mbt/node_modules/binwrap/binstall.js:11:12)
at install (/usr/lib/node_modules/mbt/node_modules/binwrap/install.js:20:10)
at Object.install (/usr/lib/node_modules/mbt/node_modules/binwrap/index.js:14:14)
at Object. (/usr/lib/node_modules/mbt/node_modules/binwrap/bin/binwrap-install:18:9)
at Module._compile (module.js:653:30)
at Object.Module._extensions..js (module.js:664:10)
at Module.load (module.js:566:32)
at tryModuleLoad (module.js:506:12)
at Function.Module._load (module.js:498:3)
at Function.Module.runMain (module.js:694:10)
at startup (bootstrap_node.js:204:16)
at bootstrap_node.js:625:3
errno: -13,
code: 'EACCES',
syscall: 'mkdir',
path: '/usr/lib/node_modules/mbt/unpacked_bin' }

3. Workaround (this command works): sudo npm install -g mbt --unsafe-perm=true --allow-root

Solution found in : npm/npm#17268

Seems that the npm install step described in https://sap.github.io/cloud-mta-build-tool/download/
does not work for my system. Perhaps a bug or just need a correction to the MBT guide. Thanks for your help in advance. I have attached a more comprehensive log file of the exception.

log_file.zip

[ShimiT]

@katunin-ng - as this is related to OS user permission, I think we can add it to the troubleshooting guide.

[ShimiT]

Fixed, added to the troubleshooting section.

[DanieleStrafile]

thank you @ShimiT !

[leotrinh]

i've got same issue and resolved by add -unsafe-perm=true --allow-root

Full command: npm i -g mbt -unsafe-perm=true --allow-root
Hopefully can help