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Excluding specific string grep is also including similar strings

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1

I am trying to exclude certain entries of URLs (using IPs instead of domain names) in a list with a grep command, specifically to remove all entries starting with https:// and ending with :80. however, entries with https:// and :8080 are also being included.

My grep command is:

egrep -v "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80"

How can I force grep to only exclude :80 and not :8080

An example of the input file contents is:

http://10.10.46.1:80
http://10.10.48.67:8080
http://10.10.48.67:443
https://10.10.46.1:80
https://10.10.48.67:8080
https://10.10.48.67:443

text-processing grep

share|improve this question

edited 9 hours ago

john doe

asked 9 hours ago

john doejohn doe

8566 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you give us an example of your input file please? Are the IPs the only thing on the line? Are there any characters after the IPs? What characters? A space?
  
  – terdon♦
  9 hours ago
  

  
  
  
  

add a comment | 

1

I am trying to exclude certain entries of URLs (using IPs instead of domain names) in a list with a grep command, specifically to remove all entries starting with https:// and ending with :80. however, entries with https:// and :8080 are also being included.

My grep command is:

egrep -v "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80"

How can I force grep to only exclude :80 and not :8080

An example of the input file contents is:

http://10.10.46.1:80
http://10.10.48.67:8080
http://10.10.48.67:443
https://10.10.46.1:80
https://10.10.48.67:8080
https://10.10.48.67:443

text-processing grep

share|improve this question

edited 9 hours ago

john doe

asked 9 hours ago

john doejohn doe

8566 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Can you give us an example of your input file please? Are the IPs the only thing on the line? Are there any characters after the IPs? What characters? A space?
  
  – terdon♦
  9 hours ago
  

  
  
  
  

add a comment | 

I am trying to exclude certain entries of URLs (using IPs instead of domain names) in a list with a grep command, specifically to remove all entries starting with https:// and ending with :80. however, entries with https:// and :8080 are also being included.

My grep command is:

egrep -v "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80"

How can I force grep to only exclude :80 and not :8080

An example of the input file contents is:

http://10.10.46.1:80
http://10.10.48.67:8080
http://10.10.48.67:443
https://10.10.46.1:80
https://10.10.48.67:8080
https://10.10.48.67:443

text-processing grep

share|improve this question

edited 9 hours ago

john doe

asked 9 hours ago

john doejohn doe

8566 bronze badges

egrep -v "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80"

http://10.10.46.1:80
http://10.10.48.67:8080
http://10.10.48.67:443
https://10.10.46.1:80
https://10.10.48.67:8080
https://10.10.48.67:443

share|improve this question

edited 9 hours ago

john doe

asked 9 hours ago

john doejohn doe

8566 bronze badges

share|improve this question

edited 9 hours ago

john doe

asked 9 hours ago

john doejohn doe

8566 bronze badges

asked 9 hours ago

john doejohn doe

8566 bronze badges

asked 9 hours ago

john doejohn doe

8566 bronze badges

1 Answer
1

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oldest

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4

Just be a tad more specific in your grep command. If the IPs are the only thing on the line, so the :80 will be the last 3 characters, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80$"

Or, if there can be whitespace after the 80, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80s*$"

If the :80 isn't the last thing on the line, just grep for cases where there is a space after it:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80 "

If the last character isn't a space, adapt to suit your input.

share|improve this answer

answered 9 hours ago

terdon♦terdon

139k3333 gold badges286286 silver badges463463 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Or add a word boundary: ...:80\>" -- gnu.org/software/gnulib/manual/html_node/…
  
  – glenn jackman
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Or grep -x -v ...
  
  – Kusalananda♦
  2 hours ago
  

  
  
  
  

add a comment | 

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4

Just be a tad more specific in your grep command. If the IPs are the only thing on the line, so the :80 will be the last 3 characters, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80$"

Or, if there can be whitespace after the 80, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80s*$"

If the :80 isn't the last thing on the line, just grep for cases where there is a space after it:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80 "

If the last character isn't a space, adapt to suit your input.

share|improve this answer

answered 9 hours ago

terdon♦terdon

139k3333 gold badges286286 silver badges463463 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Or add a word boundary: ...:80\>" -- gnu.org/software/gnulib/manual/html_node/…
  
  – glenn jackman
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Or grep -x -v ...
  
  – Kusalananda♦
  2 hours ago
  

  
  
  
  

add a comment | 

4

Just be a tad more specific in your grep command. If the IPs are the only thing on the line, so the :80 will be the last 3 characters, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80$"

Or, if there can be whitespace after the 80, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80s*$"

If the :80 isn't the last thing on the line, just grep for cases where there is a space after it:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80 "

If the last character isn't a space, adapt to suit your input.

share|improve this answer

answered 9 hours ago

terdon♦terdon

139k3333 gold badges286286 silver badges463463 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Or add a word boundary: ...:80\>" -- gnu.org/software/gnulib/manual/html_node/…
  
  – glenn jackman
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Or grep -x -v ...
  
  – Kusalananda♦
  2 hours ago
  

  
  
  
  

add a comment | 

Just be a tad more specific in your grep command. If the IPs are the only thing on the line, so the :80 will be the last 3 characters, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80$"

Or, if there can be whitespace after the 80, use:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80s*$"

If the :80 isn't the last thing on the line, just grep for cases where there is a space after it:

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80 "

If the last character isn't a space, adapt to suit your input.

share|improve this answer

answered 9 hours ago

terdon♦terdon

139k3333 gold badges286286 silver badges463463 bronze badges

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80$"

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80s*$"

grep -Ev "https://[0-9]1,3.[0-9]1,3.[0-9]1,3.[0-9]1,3:80 "

share|improve this answer

answered 9 hours ago

terdon♦terdon

139k3333 gold badges286286 silver badges463463 bronze badges

answered 9 hours ago

terdon♦terdon

139k3333 gold badges286286 silver badges463463 bronze badges

answered 9 hours ago

terdon♦terdon

139k3333 gold badges286286 silver badges463463 bronze badges