Replace different wc in file?

Shell Programming and Scripting
1

dear all

i have case with 2 file different wc like:

filaA.txt
wc is 32121

fileB.txt
wc is 32130

now how to make fileA.txt same with fileB.txt??

thx before

2 
 
cp fileB.txt fileA.txt

above command copies the contents of fileB to fileA.

is that your requirement ?

3

@itkamaraj
thx before your replay

not like that this condition

if fileB.txt in wc 32130 and fileA.txt wc is 32121
i want get wc 32130 - 32121=9 so i can tail -9 >file_last.txt and extract to file A with cat file_last.txt >> fileA.txt

or any now using diff???

4

Hi,

Just try this, using diff command.

fileA.txt
--------
1
2
3

fileB.txt
--------
1
2
3
4
5

Command
-----------

diff fileA.txt fileB.txt | grep ">" | sed 's/> //g' >> fileA.txt