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urgent help needed regarding splitting file

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# 1  
Old 03-04-2010
urgent help needed regarding splitting file
how can i split a file on last record ? say i have a file A with 4 records as follows :

first line
second line
third line
last line

I want to make two files B and C

with contents of B as
first line
second line
third line

and the contents of C as
last line
# 2  
Old 03-04-2010
Try this,

Code:
sed -n '$!p' A > B ; sed -n '$p' A > C

# 3  
Old 03-04-2010
You try this.

Code:
sed -n '$!p' A > B (or) sed '$d' A > B
sed '$!d' A > C (or) sed -n '$p' A > C

# 4  
Old 03-04-2010
You can use the following commands also
Code:
head -n 3 A > B

Now the B file will contain

first line
second line
third line

Code:
tail -n 1 A > C

Now the C file will contain

last line
# 5  
Old 03-04-2010
Thillai,your second approach which is to copy the last line of a file into C is OK.But,the first command has to be like this.Because,we can't sure that there are only four lines in a file.

Code:
head -n -1 A > B

# 6  
Old 03-04-2010
Good try. But Here the user mentioned that there are 4 records only in the file A.
Kindly refer that.
# 7  
Old 03-04-2010
Bug
Try the following line,

sed '$d' A > B ; sed '$!d' A > C

B file contents:
--------------------
first line
second line
third line

C file content:
-------------------
last line
Last edited by rekha_sri; 03-04-2010 at 02:37 AM..
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