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Top Forums Shell Programming and Scripting Having a terrible problem with quotes/single quotes! Post 302542136 by alister on Tuesday 26th of July 2011 08:57:03 PM
Old 07-26-2011
Quote:
Originally Posted by jondecker76
Code:
     res=$($cmd)

...snip...

Launch "screen -r blah -X hardstatus string '%{= kG}[ %{G}%H %{g}][%= %{=  kw}%?%-Lw%?%{r}(%{W}%n*%f%t%?(%u)%?%{r})%{w}%?%+Lw%?%?%= %{g}][%{B}  %m/%d/%y %{W}%c %{g}]'"

I don't use screen, so I'm not at all familiar with it. However, as you suspect, that command substitution will not properly handle the single quotes nor the glob characters (e.g. *, ?, [...], etc) in that screen command-string argument.

As long as it's trusted input, you can try: res=$(eval "$cmd")

Regards,
Alister
 

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uadmin(1M)																uadmin(1M)

NAME
uadmin - administrative control SYNOPSIS
/usr/sbin/uadmin cmd fcn [mdep] /sbin/uadmin cmd fcn [mdep] The uadmin command provides control for basic administrative functions. This command is tightly coupled to the system administration proce- dures and is not intended for general use. It may be invoked only by the super-user. Both the cmd (command) and fcn (function) arguments are converted to integers and passed to the uadmin system call. The optional mdep (machine dependent) argument is only available for the cmd values of 1 (A_REBOOT), 2 (A_SHUTDOWN), or 5 (A_DUMP). For any other cmd value, no mdep command-line argument is allowed. When passing an mdep value that contains whitespaces, the string must be grouped together as a single argument enclosed within quotes, for example: uadmin 1 1 "-s kernel/unix" See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ uadmin(2), attributes(5) On systems, shutting down the system by means of uadmin does not update the boot archive. Avoid using this command after manual editing of files such as /etc/system or driver.conf(4). 11 Apr 2005 uadmin(1M)
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