JBoss ON apply-updates.sh fails if Bourne Shell (sh) or DASH (dash) is used instead of Bourne Again Shell (bash)

Solution Unverified - Updated

Environment

  • Red Hat JBoss Operations Network (JBoss ON) 3.3 Update 11 and earlier
  • Linux
  • Unix
  • /bin/sh is not /bin/bash or /usr/bin/bash
  • Executing apply-updates.sh

Issue

  • apply-updates.sh fails to run on a system that uses /bin/sh or /bin/dash instead of /bin/bash

      296: ./apply-updates.sh: Bad substitution

Resolution

The apply-updates.sh utility provided in JBoss ON 3.3 Update 12 and later no longer uses Bash specific syntax for variable manipulation.

Root Cause

apply-updates.sh utilized a string manipulation syntax that was specific to Bash. Specifically ${p:13} to extract the value from $p beginning at index position 13 using 0-based indexing. This syntax is not compatible with sh or dash or any other shell that does not support the GNU Bourne-Again SHell extensions.

This issue was reported in This content is not included.Red Hat Bug 1638134

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