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Help me to know about awk and nawk

 
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# 1  
Old 12-06-2010
Help me to know about awk and nawk
Hi everyone,

i am new to unix , so i want to know what is the use of awk and nawk.
because in most of the place this cmds were used.

so, if anyone provied the basic idea of this cmds, it will be much helpfull for me . . ..


Thnks in Advance Smilie
# 2  
Old 12-06-2010
This may help you,

http://www.well.ox.ac.uk/~johnb/comp/awk/awk.html
R0H0N
# 3  
Old 12-06-2010
thnks ROHON

what exactly this will do
HTML Code:
 nawk -F"/" '{print $(NF-1)}'
# 4  
Old 12-06-2010
This will print the value of last column subtracted by 1.

For Example,

if your file is having following line

dfs/dgf/fgdf/3423/fsg/32/rgf/67

then this command will print 66
R0H0N
# 5  
Old 12-06-2010
thnks for quick replay rohon

i am having file1

HTML Code:
dfs/dgf/fgdf/3423/fsg/32/rgf/67
dfs/dgf/fgdf/3423/fsg/32/rgf/67
dfs/dgf/fgdf/3423/fsg/32/rgf/67
dfs/dgf/fgdf/3423/fsg/32/rgf/67
dfs/dgf/fgdf/3423/fsg/32/rgf/67
dfs/dgf/fgdf/3423/fsg/32/rgf/67
dfs/dgf/fgdf/3423/fsg/32/rgf/67
dfs/dgf/fgdf/3423/fsg/32/rgf/67

1) want to print only 1st column

2) want to print 4 and 7th column

3) want to print last column alone.

thnks in advSmilie
# 6  
Old 12-06-2010
You should try on your own.!!!

Code:
cat fileName | awk -F"\/" '{ print $1 }'      # this will print only 1st column's data
or
cat fileName | awk -F"\/" '{ print $NR }'

Code:
cat fileName | awk -F"\/" '{ print $4 $7 }'  # this will print 4th and 7th column's data

Code:
cat fileName | awk -F"\/" '{ print $NF }'    # this will print only last column's data

R0H0N
# 7  
Old 12-06-2010
Quote:
Originally Posted by R0H0N
You should try on your own.!!!

Code:
cat fileName | awk -F"\/" '{ print $1 }'      # this will print only 1st column's data
or
cat fileName | awk -F"\/" '{ print $NR }'

Code:
cat fileName | awk -F"\/" '{ print $4 $7 }'  # this will print 4th and 7th column's data

Code:
cat fileName | awk -F"\/" '{ print $NF }'    # this will print only last column's data

hmmmm thnks
 
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