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Running vFabric tc Server 2.7 control scripts on Ubuntu results in error: [: 88: verbose-status: unexpected operator (2030333)

Symptoms

When running the vFabric tc Server control script tcruntime-ctl.sh on an Ubuntu Linux system, you see this error:

[: 88: verbose-status: unexpected operator

Cause

Since Ubuntu 6.10, the distribution ships with the default shell (i.e. /bin/sh) as dash (the Debian Almquist Shell). This is different from some of the other major Linux distributions that ship with bash (the GNU Bourne-Again Shell) as the default shell.

The error listed above is due to the tcinstance-ctl.sh script referencing /bin/sh (i.e. the default shell and not always /bin/bash), while still using bash specific syntax.

Resolution

While the error does not seem to impact the operation of the script, you can easily resolve this issue by editing the tcruntime-ctl.sh script.

Change the first line from:

#!/bin/sh

to:

#!/bin/bash

Additional Information

For more information, see Ubuntu documentation.

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