Progress report of `az storage blob upload`

Environment summary

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

apt-get

CLI Version: What version of the CLI and modules are installed? (Use az --version)

$ az --version
azure-cli (2.0.1)

acs (2.0.1)
appservice (0.1.1b6)
batch (0.1.1b5)
cloud (2.0.0)
component (2.0.0)
configure (2.0.1)
container (0.1.1b4)
core (2.0.1)
documentdb (0.1.1b2)
feedback (2.0.0)
find (0.0.1b1)
iot (0.1.1b3)
keyvault (0.1.1b6)
network (2.0.1)
nspkg (2.0.0)
profile (2.0.1)
redis (0.1.1b3)
resource (2.0.1)
role (2.0.0)
sql (0.1.1b6)
storage (2.0.0)
vm (2.0.1)

Python (Linux) 2.7.12 (default, Nov 19 2016, 06:48:10) 
[GCC 5.4.0 20160609]

OS Version: What OS and version are you using?

Linux: Ubuntu 16.04.2 LTS

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

bash

---

Description

Running az storage blob upload shows a Percent complete progress report, and it gets printed to stderr. This is fine for interactive use, but from a script I want to hide that output (since including it in build logfiles will make the logs messy). I don’t want to hide/divert stderr because if there were errors, then they should be included in the log, and there is no command-line argument that I see that can supress that error.

It would be much better to show the progress output on stdout instead, and even better to also include a flag to supress that output, similar to other network tools like curl, wget, rsync, etc.

[williexu]

@elibarzilay this has been addressed with https://github.com/Azure/azure-cli/pull/4823 Simply use the --no-progress flag to suppress the progress output.

[elibarzilay]

@tjprescott, +1 — it’s common to print such output only if stdout is a tty.