formatting awk


 
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# 1  
Old 06-17-2011
formatting awk

when i try this awk its giving out put as below.

Code:
awk '!(/^$/||/--/||/selected/||/^ *$/){print $1}' tmp.txt

output
=====
1
2010-08-03-12.31.26.126000

how excluede the 1st line ? i mean i want output only 2nd line i.e 2010-08-03-12.31.26.126000;
# 2  
Old 06-17-2011
Code:
... | tail -n+2

# 3  
Old 06-17-2011
Code:
awk '!(/^$/||/--/||/selected/||/^ *$/){a=$1} END{print a}' tmp.txt

# 4  
Old 06-17-2011
Print only second line:
Code:
awk 'NR==2' infile

Print starting second line:
Code:
awk 'NR>1' infile

Considering your first attempt, can you please post a consise input file and expected output?
# 5  
Old 06-17-2011
Quote:
Originally Posted by yazu
Code:
... | tail -n+2

Fine solution but a pipe to another process isn't really necessary in this case.


Quote:
Originally Posted by sk1418
Code:
awk '!(/^$/||/--/||/selected/||/^ *$/){a=$1} END{print a}' tmp.txt

This will work but only if there are exactly two matching lines. If there are more, instead of only ignoring the first line, all but the last are discarded.


Quote:
Originally Posted by tukuyomi
Print only second line:
Code:
awk 'NR==2' infile

Print starting second line:
Code:
awk 'NR>1' infile

Considering your first attempt, can you please post a consise input file and expected output?
There's nothing in the problem statement to indicate where the matched lines may occur in the input stream. Unless you're suggesting this as an additional AWK invocation to filter the first's output, in which case, as with the tail approach, it's not necessary.


Quote:
Originally Posted by rocking77
when i try this awk its giving out put as below.

Code:
awk '!(/^$/||/--/||/selected/||/^ *$/){print $1}' tmp.txt

output
=====
1
2010-08-03-12.31.26.126000

how excluede the 1st line ? i mean i want output only 2nd line i.e 2010-08-03-12.31.26.126000;
To exclude the first match, without making any further assumptions, I suggest:
Code:
awk '!(/^$/||/--/||/selected/||/^ *$/) && i++ {print $1}' tmp.txt

Regards,
Alister

Last edited by alister; 06-17-2011 at 12:36 PM..
# 6  
Old 06-17-2011
Or just add another condition...
Code:
awk '!(/^$/||/--/||/selected/||/^ *$/||/^.$/) {print $1}' tmp.txt

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