az storage blob upload should read from pipes

Description

It would be very nice if “az storage blob upload” could support reading from pipes instead of trying to read from an existing file.

Environment summary

Install Method: How did you install the CLI? (e.g. pip, interactive script, apt-get, Docker, MSI, nightly)
Answer here: apt-get

CLI Version: What version of the CLI and modules are installed? (Use az --version)
Answer here: azure-cli (2.0.6)

acr (2.0.4) acs (2.0.6) appservice (0.1.6) batch (2.0.4) cdn (0.0.2) cloud (2.0.2) cognitiveservices (0.1.2) command-modules-nspkg (2.0.0) component (2.0.4) configure (2.0.6) core (2.0.6) cosmosdb (0.1.6) dla (0.0.6) dls (0.0.6) feedback (2.0.2) find (0.2.2) interactive (0.3.2) iot (0.1.5) keyvault (2.0.4) lab (0.0.4) monitor (0.0.4) network (2.0.6) nspkg (3.0.0) profile (2.0.4) rdbms (0.0.1) redis (0.2.3) resource (2.0.6) role (2.0.4) sf (1.0.1) sql (2.0.3) storage (2.0.6) vm (2.0.6)

OS Version: What OS and version are you using?
Answer here: Debian 8 (Jessie)

Shell Type: What shell are you using? (e.g. bash, cmd.exe, Bash on Windows)
Answer here: Bash

[limingu]

This feature is nice to have. Close now as the low priority.

[samangh]

This seems useful, and we are open to contributions. Currently, this is a low priority as there is a clear workaround of piping to a file, and using the current upload command.

It’s worth noting that this is is not a good work around, because:

• the amount data that can be passed over is limited by how much free space is available on the hard disk (which is not not the case when using pipes);
• this causes significant I/O activity on the hard disk, which obviously slows things down.