syntax query


 
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# 1  
Old 10-13-2006
syntax query

Code:
    cat > $file <<OP1 #line 1 
    #some commands
OP1#last line

Hi, i came across the above shell code, but i don't understand the purpose of the first line and and last line,especially the effect of putting a tag( OP1) , can anyone advise me their purpose?
# 2  
Old 10-13-2006
Hi,

U r using here document. For creating here document the start and end sholud be specified by giving uique string. In ur case u r using OP1.
# 3  
Old 10-13-2006
Quote:
Originally Posted by yashavant.a
Hi,

U r using here document. For creating here document the start and end sholud be specified by giving uique string. In ur case u r using OP1.
Hi yashavant.a,
thank you.
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