Removing lines from file matching 2 strings

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I am trying to remove lines in a file that contain 2 strings.

I am using: 



perl -i.tmp -ne "print unless /$STRING_A/ and /$STRING_B/" /foo/bar/file.txt


The result is that all lines from the file containing $STRING_A are deleted regardless if $STRING_B is also in the same line.

What is the problem here? How can I fix this?




regular-expression perl




share|improve this question




















  • @Inian:I want to delete the lines that contain both these strings in the line
    – Jim
    Oct 20 '17 at 8:28











  • Have you consider adding parentheses? and has a very low priority.
    – Satō Katsura
    Oct 20 '17 at 8:33










  • @SatōKatsura: Where should the parenthesis be?
    – Jim
    Oct 20 '17 at 8:36






  • 3




    perl -lne 'print unless (/foo/o and /bar/o)'
    – Satō Katsura
    Oct 20 '17 at 8:38






  • 1




    I tested this perl command with and without parenthesis and it worked just fine. @Jim, could you provide an example where it didn't work?
    – cesarv
    Oct 20 '17 at 9:52















up vote
0
down vote

favorite












I am trying to remove lines in a file that contain 2 strings.

I am using: 



perl -i.tmp -ne "print unless /$STRING_A/ and /$STRING_B/" /foo/bar/file.txt


The result is that all lines from the file containing $STRING_A are deleted regardless if $STRING_B is also in the same line.

What is the problem here? How can I fix this?




regular-expression perl




share|improve this question




















  • @Inian:I want to delete the lines that contain both these strings in the line
    – Jim
    Oct 20 '17 at 8:28











  • Have you consider adding parentheses? and has a very low priority.
    – Satō Katsura
    Oct 20 '17 at 8:33










  • @SatōKatsura: Where should the parenthesis be?
    – Jim
    Oct 20 '17 at 8:36






  • 3




    perl -lne 'print unless (/foo/o and /bar/o)'
    – Satō Katsura
    Oct 20 '17 at 8:38






  • 1




    I tested this perl command with and without parenthesis and it worked just fine. @Jim, could you provide an example where it didn't work?
    – cesarv
    Oct 20 '17 at 9:52













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I am trying to remove lines in a file that contain 2 strings.

I am using: 



perl -i.tmp -ne "print unless /$STRING_A/ and /$STRING_B/" /foo/bar/file.txt


The result is that all lines from the file containing $STRING_A are deleted regardless if $STRING_B is also in the same line.

What is the problem here? How can I fix this?




regular-expression perl




share|improve this question












I am trying to remove lines in a file that contain 2 strings.

I am using: 



perl -i.tmp -ne "print unless /$STRING_A/ and /$STRING_B/" /foo/bar/file.txt


The result is that all lines from the file containing $STRING_A are deleted regardless if $STRING_B is also in the same line.

What is the problem here? How can I fix this?





regular-expression perl





share|improve this question











share|improve this question




share|improve this question










asked Oct 20 '17 at 8:21









Jim

2,771113256




2,771113256











  • @Inian:I want to delete the lines that contain both these strings in the line
    – Jim
    Oct 20 '17 at 8:28











  • Have you consider adding parentheses? and has a very low priority.
    – Satō Katsura
    Oct 20 '17 at 8:33










  • @SatōKatsura: Where should the parenthesis be?
    – Jim
    Oct 20 '17 at 8:36






  • 3




    perl -lne 'print unless (/foo/o and /bar/o)'
    – Satō Katsura
    Oct 20 '17 at 8:38






  • 1




    I tested this perl command with and without parenthesis and it worked just fine. @Jim, could you provide an example where it didn't work?
    – cesarv
    Oct 20 '17 at 9:52

















  • @Inian:I want to delete the lines that contain both these strings in the line
    – Jim
    Oct 20 '17 at 8:28











  • Have you consider adding parentheses? and has a very low priority.
    – Satō Katsura
    Oct 20 '17 at 8:33










  • @SatōKatsura: Where should the parenthesis be?
    – Jim
    Oct 20 '17 at 8:36






  • 3




    perl -lne 'print unless (/foo/o and /bar/o)'
    – Satō Katsura
    Oct 20 '17 at 8:38






  • 1




    I tested this perl command with and without parenthesis and it worked just fine. @Jim, could you provide an example where it didn't work?
    – cesarv
    Oct 20 '17 at 9:52
















@Inian:I want to delete the lines that contain both these strings in the line
– Jim
Oct 20 '17 at 8:28





@Inian:I want to delete the lines that contain both these strings in the line
– Jim
Oct 20 '17 at 8:28













Have you consider adding parentheses? and has a very low priority.
– Satō Katsura
Oct 20 '17 at 8:33




Have you consider adding parentheses? and has a very low priority.
– Satō Katsura
Oct 20 '17 at 8:33












@SatōKatsura: Where should the parenthesis be?
– Jim
Oct 20 '17 at 8:36




@SatōKatsura: Where should the parenthesis be?
– Jim
Oct 20 '17 at 8:36




3




3




perl -lne 'print unless (/foo/o and /bar/o)'
– Satō Katsura
Oct 20 '17 at 8:38




perl -lne 'print unless (/foo/o and /bar/o)'
– Satō Katsura
Oct 20 '17 at 8:38




1




1




I tested this perl command with and without parenthesis and it worked just fine. @Jim, could you provide an example where it didn't work?
– cesarv
Oct 20 '17 at 9:52





I tested this perl command with and without parenthesis and it worked just fine. @Jim, could you provide an example where it didn't work?
– cesarv
Oct 20 '17 at 9:52
















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