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Top Forums Shell Programming and Scripting Using sed to insert text file at first line Post 302508631 by alister on Monday 28th of March 2011 03:06:19 PM
Old 03-28-2011
I completely missed page 2 of this thread when I wrote the following Smilie

Quote:
Originally Posted by psve
Code:
sed '1r file.txt' <source.txt >desti.txt

This example will insert 'file.txt' between line 1 and 2 of source.txt.
Code:
sed '0r file.txt' <source.txt >desti.txt

gives an error message.

Does anyone know how 'sed' can insert 'file.txt' before the first line of source.txt?

I like ctsgnb's cat suggestion. However, if your life depends on using sed, you could swap the order of files:
Code:
sed '$r source.txt' < file.txt > desti.txt

If this is part of a larger sed task and swapping the order is not palatable, and if you are certain that there's more than one line in source.txt, you could use the following in a sed script:
Code:
1 {
    r file.txt
    h
    d
}

2 {
    H
    g
}

Regards,
Alister
 

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grcompiler(1)															     grcompiler(1)

NAME
grcompiler - Compile GDL into a TrueType Font SYNOPSIS
grcompiler [-d] [-D] [-g] [-n number] [-v number] [-w number] [-wall] [-q] gdl-file font-file [output-file] [output-fontname] Description Grcompiler compiles a Graphite Description Language description of the smarts for a font along with a TrueType Font to create a graphite font with graphite tables in it. -d Generate XML debugger file. -D Generate all debugger files. -g Permit and ignore invalid glyph definitions. -nnumber Set name table start location. -q Quiet mode (no messages except on error). -vnumber Set Silf table version number. -wnnnn Ignore warning with the given number. This option may be repeated. -wall Display all warnings. Environment grcompiler makes use of the following environment variables GDLPP Specifies the command to execute to run the GDL preprocessor Files gdlerr.txt Warnings and errors are output to this file. dbg_classes.txt Debug file that specifies the classes stored in the font in terms of their GDL source and containing glyph ids in hex. dbg_cmap.txt Debug file giving Unicode to glyph mapping of all the glyphs in the font and vice versa. dbg_enginecode.txt Debug file containing the action code and constraint code associated with each pass and rule in a pass. dbg_fsm.txt Debug file that gives the finite state machines of each pass and the rules referenced. For each pass, a mapping is given between glyph and column number. dbg_glyphattrs.txt Debug file containing all the glyph attributes and their names, along with values specified for each glyph. dbg_parsetree.txt Debug file giving the complete parse tree of the GDL source file. dbg_ruleprec.txt Debug file that lists the rules in precedence order (order in which they will be tested) for each pass. $_temp.gdl Debug file containing the output of gdlpp Author Martin Hosken <mhosken@users.sourceforge.net> $Date: 2012-05-29 11:36:50 $ grcompiler(1)
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