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Top Forums UNIX for Dummies Questions & Answers for statement Post 302351835 by TonyFullerMalv on Wednesday 9th of September 2009 05:24:00 PM
Old 09-09-2009
You need to break it down to see what is spitting out the error although normally I would have expected the "complainant" to announce themselves, e.g.:
Code:
bash: Bad : modifier in $ (").

or
Code:
gdb: Bad : modifier in $ (").

Did the "complainant" identify itself?

Both:
Code:
for file in `ls *usb*`; do echo -n "${file}:"; done

and
Code:
for file in *usb*; do echo -n "${file}:"; done

(run in /dev/) work okay (note the curly braces around the variable, good scripting practice).

What does running the gdb alone (with one file specified) do, then add the grep, then add the first cut, then add the second cut, that way you will find out which part is causing the error.

Can't help any more than that as I have no core files to play with...
 

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ln(1)							      General Commands Manual							     ln(1)

Name
       ln - link to a file

Syntax
       ln [ -f ] [ -i ] [ -s ] name1 [name2]
       ln [ -f ] [ -i ] [ -s ] name ... directory

Description
       A  link is a directory entry referring to a file.  A file, together with its size and all its protection information may have several links
       to it.  There are two kinds of links: hard links and symbolic links.

       By default makes hard links.  A hard link to a file is indistinguishable from the original directory entry.  Any  changes  to  a  file  are
       effective independent of the name used to reference the file.  Hard links may not span file systems and may not refer to directories.

       Given  one or two arguments, creates a link to an existing file name1.  If name2 is given, the link has that name.  The name2 may also be a
       directory in which to place the link.  Otherwise it is placed in the current directory.	If only the directory is specified,  the  link	is
       made to the last component of name1.

       Given  more  than two arguments, makes links to all the named files in the named directory.  The links made have the same name as the files
       being linked to.

Options
       -f   Forces existing destination pathnames to be removed before linking without prompting for confirmation.

       -i   Write a prompt to standard output requesting information for each link that would overwrite an existing file.  If  the  response  from
	    standard input is affirmative, and if permissions allow, the link is done. The -i option has this effect even if the standard input is
	    not a terminal.

       -s   Creates a symbolic link.

	    A symbolic link contains the name of the file to which it is linked.  The referenced file is used when an operation  is  performed	on
	    the  link.	 A  on a symbolic link returns the linked-to file.  An must be done to obtain information about the link.  The call may be
	    used to read the contents of a symbolic link.  Symbolic links may span file systems and may refer to directories.

See Also
       cp(1), mv(1), rm(1), link(2), readlink(2), stat(2), symlink(2)

																	     ln(1)
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