02-26-2009
Hey franklin Thanks for your reply
But
nawk 'NR==FNR{a[$0];next}!($1 in a){print;c++}END{if(c){print "FAILED"}}' file2 file1 >> /tmp/file3
is adding the string FAILED at the end of the file after all the other strings,is there any way to add this string at the beginning of the file.This is very important because after this line of code
i will be checking the condition
if [ -s /tmp/file3 ]
and if there are some string which came as the output of comparison then i have to include FAILED as the starting string.
Currently the code is:
nawk 'NR==FNR{a[$0];next}!($1 in a){print;c++}END{if(c){print "FAILED"}}' file2 file1 >> /tmp/file3
if [ -s /tmp/file3] ; then
echo "FAILED on today " >> /tmp/file3
and it is giving the output as:
text1
text2
text4
FAILED
FAILED on today
but my requirement is
the output should come as:
FAILED text1
FAILED text2
FAILED text4
FAILED on today
Could you please help??
Thanks
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DIFF3(1) General Commands Manual DIFF3(1)
NAME
diff3 - 3-way differential file comparison
SYNOPSIS
diff3 [ -ex3 ] file1 file2 file3
DESCRIPTION
Diff3 compares three versions of a file, and publishes disagreeing ranges of text flagged with these codes:
==== all three files differ
====1 file1 is different
====2 file2 is different
====3 file3 is different
The type of change suffered in converting a given range of a given file to some other is indicated in one of these ways:
f : n1 a Text is to be appended after line number n1 in file f, where f = 1, 2, or 3.
f : n1 , n2 c Text is to be changed in the range line n1 to line n2. If n1 = n2, the range may be abbreviated to n1.
The original contents of the range follows immediately after a c indication. When the contents of two files are identical, the contents of
the lower-numbered file is suppressed.
Under the -e option, diff3 publishes a script for the editor ed that will incorporate into file1 all changes between file2 and file3, i.e.
the changes that normally would be flagged ==== and ====3. Option -x (-3) produces a script to incorporate only changes flagged ====
(====3). The following command will apply the resulting script to `file1'.
(cat script; echo '1,$p') | ed - file1
FILES
/tmp/d3?????
/usr/lib/diff3
SEE ALSO
diff(1)
BUGS
Text lines that consist of a single `.' will defeat -e.
Files longer than 64K bytes won't work.
DIFF3(1)