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Top Forums Shell Programming and Scripting not being able to escape "$" is doing my head in. Post 302188298 by mjays on Wednesday 23rd of April 2008 06:04:35 AM
Old 04-23-2008
not being able to escape "$" is doing my head in.

why oh why oh why is this happening?

i need to replace the $ with \$ in the file below

Code:
file=products_jsp\$products_jspHelper.class

echo $file

products_jsp$products_jspHelper.class


this works

echo ${file} | sed 's/\$/\\$/'

products_jsp\$products_jspHelper.class


but this doesn't

file=`echo ${file} | sed 's/\$/\\$/'`

echo $file

products_jsp$products_jspHelper.class$

i need the new $file variable to be the old $file variable but with the $ escaped.

why is it seeing $ as the 'end of line' special character? it should be escaped.

thanks in advance.
 

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echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME
echo, noecho - enable/disable terminal echo SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib -R /usr/xpg4/lib -lcurses [ library... ] c89 [ flag... ] file... -lcurses [ library... ] #include <curses.h> int echo(void); int noecho(void); DESCRIPTION
The echo() function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially, curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control soft- ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined. RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they return ERR. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5) SunOS 5.11 5 Jun 2002 echo(3XCURSES)
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