Baptiste DA ROIT created KARAF-6254:
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Summary: Karaf shell scripts don't work on Solaris 10
Key: KARAF-6254
URL: https://issues.apache.org/jira/browse/KARAF-6254
Project: Karaf
Issue Type: Bug
Affects Versions: 4.2.5
Environment: Solaris 10 x86-64 using default shell
Reporter: Baptiste DA ROIT
Trying to launch Karaf from default shell (which, from what I uderstand, is
Bourne Shell) on a Solaris 10 platform results in the following error:
{code:sh}
# ./karaf
./karaf: erreur de syntaxe ligne 30: `READLINK_EXISTS=$' inattendue\{code}
On an other hand, running Karaf shell scripts using another shell (as ksh)
works fine:
{code:sh}
# ksh karaf
{code}
The following shell scripts are impacted:
* client
* inc
* shell
* start
* status
* stop
{code:shell}
# ./client
./client: erreur de syntaxe ligne 30: `READLINK_EXISTS=$' inattendue
# ./inc
./inc: erreur de syntaxe ligne 77: `MAX_FD_LIMIT=$' inattendue
# ./shell
./shell: erreur de syntaxe ligne 30: `READLINK_EXISTS=$' inattendue
# ./start
./start: erreur de syntaxe ligne 30: `READLINK_EXISTS=$' inattendue
# ./status
./status: erreur de syntaxe ligne 30: `READLINK_EXISTS=$' inattendue
# ./stop
./stop: erreur de syntaxe ligne 30: `READLINK_EXISTS=$' inattendue
{code}
This is because these shell scripts uses the *$()* syntax for command
substitution, which is not compatible with some very oldest of
non-POSIX-compatible bourne-shells (such as the default Shell of Solaris 10).
To enhance the portability of these scripts, an alternative would be to use the
legacy command substitution syntax *`...`*. Indeed, while the *$()* syntax is
recommended as the way to go (mainly because it makes nesting command
substitutions easier and allows better readibility), the backtick one is still
valid, even providing better portability.
Source: [Why is {{$(...)}} preferred over {{`...`}}
(backticks)?|http://mywiki.wooledge.org/BashFAQ/082] at BashFAQ
(!) Note that this issue can probably be linked to
[KARAF-5190|https://issues.apache.org/jira/browse/KARAF-5190].
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