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# 1  
Old 06-11-2015
Help match the exact string
I just want to match "binutils1_test" only, and print the match line only

Code:
lyang001@lyang001-OptiPlex-9010:/tmp$ cat file
    zbinutils1_test
       bbinutils1_test
       binutils1_test
    w-binutils1_test
lyang001@lyang001-OptiPlex-9010:/tmp$ cat file |grep -w 'binutils1_test'
       binutils1_test
    w-binutils1_test
lyang001@lyang001-OptiPlex-9010:/tmp$ cat file |grep '\bbinutils1_test\b'
       binutils1_test
    w-binutils1_test

Last edited by yanglei_fage; 06-11-2015 at 02:38 AM..
# 2  
Old 06-11-2015
Hello yanglei_fage,

Following may help you in same.
Code:
awk '{A=$0;sub(/^[[:space:]]+/,X,$0);if($0 == "binutils1_test"){print A}}' Input_file

Output will be as follows.
Code:
       binutils1_test
       binutils1_test
       binutils1_test

Thanks,
R. Singh
# 3  
Old 06-11-2015
Quote:
Originally Posted by RavinderSingh13
Hello yanglei_fage,

Following may help you in same.
Code:
awk '{A=$0;sub(/^[[:space:]]+/,X,$0);if($0 == "binutils1_test"){print A}}' Input_file

Output will be as follows.
Code:
       binutils1_test
       binutils1_test
       binutils1_test

Thanks,
R. Singh
I just want to match the line is binutils1_test
# 4  
Old 06-11-2015
You showed us two examples of code you had written that apparently did not do what you want. RavinderSingh13 suggested some code that strips off leading whitespace characters and prints lines that match your requested string after doing that. And, you just repeated your original, ambiguous statement about what you want.

What output were you expecting from the input you supplied? Were you expecting the lines RavinderSingh13's code extracted? Were you expecting no lines to be matched (due to leading or trailing whitespace that is not in the string binutils1_test)? Were you expecting every line that contained that string to be printed?
# 5  
Old 06-11-2015
Something like this ?


Code:
[akshay@localhost tmp]$ cat file
    zbinutils1_test
       bbinutils1_test
       binutils1_test
    w-binutils1_test
binutils1_test
bbinutils1_test
			binutils1_test

Code:
[akshay@localhost tmp]$ awk '$1 == "binutils1_test"' file
       binutils1_test
binutils1_test
			binutils1_test


Code:
[akshay@localhost tmp]$ awk '/^[ \t]+?binutils1_test/' file
       binutils1_test
binutils1_test
			binutils1_test

# 6  
Old 06-11-2015
Code:
awk 'NF==1 && $1==s' s=binutils1_test file

# 7  
Old 06-11-2015
Quote:
Originally Posted by Don Cragun
You showed us two examples of code you had written that apparently did not do what you want. RavinderSingh13 suggested some code that strips off leading whitespace characters and prints lines that match your requested string after doing that. And, you just repeated your original, ambiguous statement about what you want.

What output were you expecting from the input you supplied? Were you expecting the lines RavinderSingh13's code extracted? Were you expecting no lines to be matched (due to leading or trailing whitespace that is not in the string binutils1_test)? Were you expecting every line that contained that string to be printed?
I expect the line that contains binutils1_test to be print, which maybe contains space or tab, I don't care
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