Replace shorthand status flag with long verion in get.sh

[rgee0]

Signed-off-by: Richard Gee richard@technologee.co.uk

Description

This change replaces the -s option for shasum, which suppresses output, in favour of redirection to /dev/null.

Motivation and Context

As part of the graceful degradation change use of sha256sum was introduced.
On Ubuntu 16.04 the shorthand flag for status does not exist which results in
a failure when verifying the checksum. Further, support for -s & the long --status flag
is inconsistent across distros.

• I have raised an issue to propose this change (Further addendum to Create hashes for binary distribution #422 & Add SHA checking to get.sh download script #425)

How Has This Been Tested?

Pre-tested on Ubuntu 16.04 to validate reported issue
Post-tested on Ubuntu 16.04, MacOS and PWD to get a broad coverage of scenarios.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have signed-off my commits with git commit -s
• I have added tests to cover my changes.
• All new and existing tests passed.

[alexellis]

Since this has been tested and seems urgent (we have a workshop on today at OSCON) I'll merge right away.

[alexellis]

PRETTY_NAME="Ubuntu 16.04.4 LTS"

~$ curl -sLf cli.openfaas.com | sudo sh

You already have the faas-cli!
Overwriting in 1 seconds.. Press Control+C to cancel.

x86_64
Downloading package https://github.com/openfaas/faas-cli/releases/download/0.6.13/faas-cli as /tmp/faas-cli
Download complete.

Running as root - Attempting to move faas-cli to /usr/local/bin
New version of faas-cli installed to /usr/local/bin
  ___                   _____           ____
 / _ \ _ __   ___ _ __ |  ___|_ _  __ _/ ___|
| | | | '_ \ / _ \ '_ \| |_ / _` |/ _` \___ \
| |_| | |_) |  __/ | | |  _| (_| | (_| |___) |
 \___/| .__/ \___|_| |_|_|  \__,_|\__,_|____/
      |_|

Commit: 8ded58db45e83219347b8ba7a719b85bcbd7830e
Version: 0.6.13

[alexellis]

MacOS

curl -sLf cli.openfaas.com | sudo sh
Password:

You already have the faas-cli!
Overwriting in 1 seconds.. Press Control+C to cancel.

Downloading package https://github.com/openfaas/faas-cli/releases/download/0.6.13/faas-cli-darwin as /tmp/faas-cli-darwin
Download complete.

Running as root - Attempting to move faas-cli to /usr/local/bin
New version of faas-cli installed to /usr/local/bin
  ___                   _____           ____
 / _ \ _ __   ___ _ __ |  ___|_ _  __ _/ ___|
| | | | '_ \ / _ \ '_ \| |_ / _` |/ _` \___ \
| |_| | |_) |  __/ | | |  _| (_| | (_| |___) |
 \___/| .__/ \___|_| |_|_|  \__,_|\__,_|____/
      |_|

Commit: 8ded58db45e83219347b8ba7a719b85bcbd7830e
Version: 0.6.13

Should we at some point hint that we verified the SHA - for the times we did?