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Full Discussion: append to fle using sed
Top Forums Shell Programming and Scripting append to fle using sed Post 302121236 by Shell_Life on Tuesday 12th of June 2007 02:06:36 PM
Old 06-12-2007
SD,
"sed" overwrites the file in the "w" option every time it runs.
If you want to continue appending to the file, you can try
this alternate "sed" solution:
Code:
rm -f ${sourcefile}
...
sed -n "${var},${final}p" >> ${sourcefile}

 

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append(1T)						       Tcl Built-In Commands							append(1T)

__________________________________________________________________________________________________________________________________________________

NAME
append - Append to variable SYNOPSIS
append varName ?value value value ...? _________________________________________________________________ DESCRIPTION
Append all of the value arguments to the current value of variable varName. If varName doesn't exist, it is given a value equal to the concatenation of all the value arguments. The result of this command is the new value stored in variable varName. This command provides an efficient way to build up long variables incrementally. For example, ``append a $b'' is much more efficient than ``set a $a$b'' if $a is long. EXAMPLE
Building a string of comma-separated numbers piecemeal using a loop. set var 0 for {set i 1} {$i<=10} {incr i} { append var "," $i } puts $var # Prints 0,1,2,3,4,5,6,7,8,9,10 SEE ALSO
concat(1T), lappend(1T) KEYWORDS
append, variable ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWTcl | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for Tcl is available on http://opensolaris.org. Tcl append(1T)
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