append a line to the last line in a file - UNIX Desktop for Dummies Questions & Answers

subhrap.das · #1 (**permalink**) 03-27-2007

Suppose i have a file "xyz.txt" which contains

abcdef
ghijklm
nop

Now in want to add "qrst" to the last line such that the file becomes

abcdef
ghijklm
nopqrst

P.S:The o/p i need is
abcdef
ghijklm
nopqrst (and not) nop
qrst

dennis.jacob · #2 (**permalink**) 03-27-2007

Try this..

Code:

echo "$(cat file)qrst" >temp
mv temp file

O/p:
cat file
abcdef
ghijklm
nop
echo "$(cat file)qrst"
abcdef
ghijklm
nopqrst

mona · #3 (**permalink**) 03-27-2007

Using sed

Code:

$ cat xyz.txt
abcdef
ghijklm
nop
$ sed '$ a\qrst' xyz.txt
abcdef
ghijklm
nop
qrst
$ sed '$ a\qrst' xyz.txt > abc.txt
$ mv abc.txt xyz.txt
$ cat xyz.txt
abcdef
ghijklm
nop
qrst
$

mona · #4 (**permalink**) 03-27-2007

I seem to have misunderstood the requirement. Hope below is the required soln.

Code:

$ sed '$ s/^\(.*\)$/\1qrst/' xyz.txt
abcdef
ghijklm
nopqrst

matrixmadhan · #5 (**permalink**) 03-28-2007

Code:

awk '{ printf "\n%s", $0 }END{ printf "abcdefghijkl\n" }' filename

Shell_Life · #6 (**permalink**) 04-25-2007

sed '$s/$/&qrst/' input_file

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