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# 1  
Old 07-10-2007
appending

hi,

a1.txt
------

xyz zxc

xya xdf


a2.txt
------

a1 a2

b1 b2



cat a1.txt >> a2.txt -->its appending at the end



xyz zxc

xya xdf

a1 a2

b1 b2


I need to add at the beging of the file a2.txt.Is there any command
to do it?

Thanks inadvance
Mohan
# 2  
Old 07-10-2007
not directly,

cat a1.txt a2.txt > a3.txt
# 3  
Old 07-10-2007
Hi,

Try the following

cat a2.txt >> a1.txt

Thanks,
Shahnaz.
# 4  
Old 07-10-2007
You can also play with the ed command :
Code:
echo "0r a1.txt\nw\nq" | ed -s a2.txt

Jean-Pierre.
# 5  
Old 07-10-2007
Hi
Thanks,its working .Can you expain this

echo "0r a1.txt\nw\nq" | ed -s a2.txt


Thanks inadvance
Mohan
# 6  
Old 07-11-2007
ed -s a2.txt
Edit (by line) file a2.txt, -s suppresses character counts that the editor displays.
Commands are read from stdin (output of echo command)
echo "0r a1.txt\nw\nq"
Gives commands to ed
0r a1.txt Insert file a1.txt before first line of file.
w Write file (a2.txt)
q Quit editor


Jean-Pierre.
# 7  
Old 07-11-2007
Hi,

Thanks for your explinations

Thanks and Regards,
Mohan

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