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Full Discussion: assign subst|grep|sed command result to a variable
Top Forums Shell Programming and Scripting assign subst|grep|sed command result to a variable Post 302145573 by prowla on Wednesday 14th of November 2007 04:37:17 PM
Old 11-14-2007
I hinted at the potential for problems the "\" in the string, and it looks like you may have hit that. Microsoft have a lot to answer for in choosing to use a backslash as the directory delimiter - it has cost man-years of effort in people having to unravel it (including within Microsoft, as they use C and its derivatives for development).
It is possible that the behaviour will differ depending upon whether you use the command in a script or at the command line, and whether you use single or double quotes.

I don't see why the command should've hung, so it just might be worth checking that you have matched up the pairs of single and double-quotes on the revised command.

It looks to me like you're trying find a line with a DOS path on it (grep 'L:\\\:' is looking for a string L:\:) and then strip off the path to leave the filename (sed -e 's/.*\\\//' means delete everything up to the last backslash).
If that is the case, then you might try replacing the hard-wired grep with an extended grep egrep '[A-Z]:\\\:'.

What's the output of the "subst" command alone?
And what would you like the result to look like?

Using eval is going to add in even more dependencies on the backslashes.

Incidentally, are you sure it's the right number of backslashes and : characters in your string?
Last edited by prowla; 11-14-2007 at 06:06 PM..
 

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LEARN ABOUT DEBIAN

colorgccrc

COLORGCCRC(5)							File Formats Manual						     COLORGCCRC(5)

NAME

       colorgccrc - configuration file for colorgcc

DESCRIPTION

       A colorgccrc configuration file is used to configure the highlighting of the compiler output from colorgcc.

SYNTAX

       Each  line  consists  of  a  keyword  designating  a configuration variable.  The keyword is followed by `:' and then one or several values
       (depending on the keyword).  Lines beginning with a hash mark `#' are comments.

CONFIGURATION VARIABLES

       g++ | gcc | c++ | cc | g77 | gcj | gnat | gpc
	      Specifies the paths to the compilers.  Takes one value; a path to the compiler.

       nocolor
	      Specifies what terminal types colorization should be disabled on.  Takes one or several values, separated by whitespace.

       srcColor
	      Specifies the highlighting attributes source-code should be given.  Takes one or several color attributes.  See  the  section  COLOR
	      ATTRIBUTES for more information.

       introColor
	      Specifies  the  highlighting  attributes	for normal compiler output.  Takes one or several color attributes.  See the section COLOR
	      ATTRIBUTES for more information.

       warningFileNameColor | errorFileNameColor
	      Specifies the highlighting attributes for the filename in a  warning  or	an  error,  respectively.   Takes  one	or  several  color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

       warningNumberColor | errorNumberColor
	      Specifies  the  highlighting  attributes	for  the  line-number  in a warning or an error, respectively.	Takes one or several color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

       warningMessageColor | errorMessageColor
	      Specifies the highlighting attributes for the message-text in a warning or an error,  respectively.   Takes  one	or  several  color
	      attributes.  See the section COLOR ATTRIBUTES for more information.

COLOR ATTRIBUTES

       The following attributes are valid for highlighting.

       clear, reset

       bold, underline, underscore, blink, reverse, concealed

       black, red, green, yellow, blue, magenta, cyan, white

       on_black, on_red, on_green, on_yellow, on_blue, on_magenta, on_cyan, on_white

SEE ALSO

       gcc(1), colorgcc(1)

HISTORY

       Jan 15 2003: Initial version of this manual-page.

REPORTING BUGS

       Report bugs to <jmoyers@geeks.com>

AUTHORS

       Jamie Moyers <jmoyers@geeks.com> is the author of colorgcc.

       This  manual  page  was	written  by Joe Wreschnig <piman@sacredchao.net>, and modified by David Weinehall <tao@debian.org>, for the Debian
       GNU/Linux system (but may be used by others).

COPYRIGHT

       Copyright (C) 2003 Jamie Moyers
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

								   Jan 15, 2003 						     COLORGCCRC(5)
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