how can I find all lines containing two words?

up vote
2
down vote

favorite

I need to check if two words are exist on any line in a text file. there are no limits for the characters of the words For example:

I want to find lines of a text that contain the two words cat and elephant together:

Cat is smaller than elephant
Elephant is larger than cat
Cats are cute!
Elephants are very strong
Cat and elephants live in different environment
cats are friendly

In the previous examples, how can I find the lines containing both words

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

I tried grep and awk with no hope, the problem is there are words have upper and lower case so how can I match for both words regardless of its letter status!?

edited 10 mins ago

asked 3 hours ago

gormet

164

New contributor

1

Try with grep again, but use grep -i. This makes its matching disregard the case of the letters. Also, please show what you've tried so that other's make comment and give suggestions for improvement. For example, does your command distinguish that "catnip" is not the word "cat"?
â€“Â Kusalananda
3 hours ago

Related: grep with logic operators
â€“Â steeldriver
1 hour ago

add a commentÂ |Â

up vote
2
down vote

favorite

I need to check if two words are exist on any line in a text file. there are no limits for the characters of the words For example:

I want to find lines of a text that contain the two words cat and elephant together:

Cat is smaller than elephant
Elephant is larger than cat
Cats are cute!
Elephants are very strong
Cat and elephants live in different environment
cats are friendly

In the previous examples, how can I find the lines containing both words

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

I tried grep and awk with no hope, the problem is there are words have upper and lower case so how can I match for both words regardless of its letter status!?

edited 10 mins ago

asked 3 hours ago

gormet

164

New contributor

1

Try with grep again, but use grep -i. This makes its matching disregard the case of the letters. Also, please show what you've tried so that other's make comment and give suggestions for improvement. For example, does your command distinguish that "catnip" is not the word "cat"?
â€“Â Kusalananda
3 hours ago

Related: grep with logic operators
â€“Â steeldriver
1 hour ago

add a commentÂ |Â

up vote
2
down vote

favorite

I need to check if two words are exist on any line in a text file. there are no limits for the characters of the words For example:

I want to find lines of a text that contain the two words cat and elephant together:

Cat is smaller than elephant
Elephant is larger than cat
Cats are cute!
Elephants are very strong
Cat and elephants live in different environment
cats are friendly

In the previous examples, how can I find the lines containing both words

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

I tried grep and awk with no hope, the problem is there are words have upper and lower case so how can I match for both words regardless of its letter status!?

edited 10 mins ago

asked 3 hours ago

gormet

164

New contributor

I need to check if two words are exist on any line in a text file. there are no limits for the characters of the words For example:

I want to find lines of a text that contain the two words cat and elephant together:

Cat is smaller than elephant
Elephant is larger than cat
Cats are cute!
Elephants are very strong
Cat and elephants live in different environment
cats are friendly

In the previous examples, how can I find the lines containing both words

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

I tried grep and awk with no hope, the problem is there are words have upper and lower case so how can I match for both words regardless of its letter status!?

bash

edited 10 mins ago

asked 3 hours ago

gormet

164

New contributor

edited 10 mins ago

asked 3 hours ago

gormet

164

New contributor

edited 10 mins ago

asked 3 hours ago

gormet

164

New contributor

asked 3 hours ago

gormet

164

asked 3 hours ago

gormet

164

New contributor

gormet is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

1

Try with grep again, but use grep -i. This makes its matching disregard the case of the letters. Also, please show what you've tried so that other's make comment and give suggestions for improvement. For example, does your command distinguish that "catnip" is not the word "cat"?
â€“Â Kusalananda
3 hours ago

Related: grep with logic operators
â€“Â steeldriver
1 hour ago

add a commentÂ |Â

1

Try with grep again, but use grep -i. This makes its matching disregard the case of the letters. Also, please show what you've tried so that other's make comment and give suggestions for improvement. For example, does your command distinguish that "catnip" is not the word "cat"?
â€“Â Kusalananda
3 hours ago

Related: grep with logic operators
â€“Â steeldriver
1 hour ago

Try with grep again, but use grep -i. This makes its matching disregard the case of the letters. Also, please show what you've tried so that other's make comment and give suggestions for improvement. For example, does your command distinguish that "catnip" is not the word "cat"?
â€“Â Kusalananda
3 hours ago

Related: grep with logic operators
â€“Â steeldriver
1 hour ago

add a commentÂ |Â

2 Answers
2

active

oldest

votes

up vote
3
down vote

accepted

With grep

grep -i "cat" file | grep -i "elephant"

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

The flag in grep is to ignore case (upper/lower)

 -i, --ignore-case ignore case distinctions

or awk

awk 'BEGINIGNORECASE=1 /cat/&&/elephant/print $0' file

Also, awk statement can be run as follows:

awk '/cat/&&/elephant/' IGNORECASE=1 file

edited 11 mins ago

answered 3 hours ago

Goro

9,86364689

The print $0 block is optional since it is the default action.
â€“Â glenn jackman
16 mins ago

@glennjackman thank you so much for the valuable comment. Would suggest adding a note or just removing it entirely?
â€“Â Goro
14 mins ago

I would leave your answer as it is. FYI the awk command can be "golfed" to awk '/cat/&&/elephant/' IGNORECASE=1 file -- also I believe IGNORECASE is specific to GNU awk
â€“Â glenn jackman
13 mins ago

Perfect! I will add both.... you keep teaching me new things many thanks! ;-)
â€“Â Goro
12 mins ago

add a commentÂ |Â

up vote
1
down vote

with GNU sed:

sed -n '/cat/I /elephant/I p' file

or perl

perl -ne 'print if /cat/i and /elephant/i' file

or a single grep

grep -i -e 'cat.*elephant' -e 'elephant.*cat' file

answered 15 mins ago

glenn jackman

49.1k467106

add a commentÂ |Â

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
convertImagesToLinks: false,
noModals: false,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);

);

gormet is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f475908%2fhow-can-i-find-all-lines-containing-two-words%23new-answer', 'question_page');

);

Post as a guest

Name

2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

up vote
3
down vote

accepted

With grep

grep -i "cat" file | grep -i "elephant"

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

The flag in grep is to ignore case (upper/lower)

 -i, --ignore-case ignore case distinctions

or awk

awk 'BEGINIGNORECASE=1 /cat/&&/elephant/print $0' file

Also, awk statement can be run as follows:

awk '/cat/&&/elephant/' IGNORECASE=1 file

edited 11 mins ago

answered 3 hours ago

Goro

9,86364689

The print $0 block is optional since it is the default action.
â€“Â glenn jackman
16 mins ago

@glennjackman thank you so much for the valuable comment. Would suggest adding a note or just removing it entirely?
â€“Â Goro
14 mins ago

I would leave your answer as it is. FYI the awk command can be "golfed" to awk '/cat/&&/elephant/' IGNORECASE=1 file -- also I believe IGNORECASE is specific to GNU awk
â€“Â glenn jackman
13 mins ago

Perfect! I will add both.... you keep teaching me new things many thanks! ;-)
â€“Â Goro
12 mins ago

add a commentÂ |Â

up vote
3
down vote

accepted

With grep

grep -i "cat" file | grep -i "elephant"

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

The flag in grep is to ignore case (upper/lower)

 -i, --ignore-case ignore case distinctions

or awk

awk 'BEGINIGNORECASE=1 /cat/&&/elephant/print $0' file

Also, awk statement can be run as follows:

awk '/cat/&&/elephant/' IGNORECASE=1 file

edited 11 mins ago

answered 3 hours ago

Goro

9,86364689

The print $0 block is optional since it is the default action.
â€“Â glenn jackman
16 mins ago

@glennjackman thank you so much for the valuable comment. Would suggest adding a note or just removing it entirely?
â€“Â Goro
14 mins ago

I would leave your answer as it is. FYI the awk command can be "golfed" to awk '/cat/&&/elephant/' IGNORECASE=1 file -- also I believe IGNORECASE is specific to GNU awk
â€“Â glenn jackman
13 mins ago

Perfect! I will add both.... you keep teaching me new things many thanks! ;-)
â€“Â Goro
12 mins ago

add a commentÂ |Â

up vote
3
down vote

accepted

With grep

grep -i "cat" file | grep -i "elephant"

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

The flag in grep is to ignore case (upper/lower)

 -i, --ignore-case ignore case distinctions

or awk

awk 'BEGINIGNORECASE=1 /cat/&&/elephant/print $0' file

Also, awk statement can be run as follows:

awk '/cat/&&/elephant/' IGNORECASE=1 file

edited 11 mins ago

answered 3 hours ago

Goro

9,86364689

With grep

grep -i "cat" file | grep -i "elephant"

Cat is smaller than elephant
Elephant is larger than cat
Cat and elephants live in different environment

The flag in grep is to ignore case (upper/lower)

 -i, --ignore-case ignore case distinctions

or awk

awk 'BEGINIGNORECASE=1 /cat/&&/elephant/print $0' file

Also, awk statement can be run as follows:

awk '/cat/&&/elephant/' IGNORECASE=1 file

edited 11 mins ago

answered 3 hours ago

Goro

9,86364689

edited 11 mins ago

answered 3 hours ago

Goro

9,86364689

answered 3 hours ago

Goro

9,86364689

answered 3 hours ago

Goro

9,86364689

The print $0 block is optional since it is the default action.
â€“Â glenn jackman
16 mins ago

@glennjackman thank you so much for the valuable comment. Would suggest adding a note or just removing it entirely?
â€“Â Goro
14 mins ago

I would leave your answer as it is. FYI the awk command can be "golfed" to awk '/cat/&&/elephant/' IGNORECASE=1 file -- also I believe IGNORECASE is specific to GNU awk
â€“Â glenn jackman
13 mins ago

Perfect! I will add both.... you keep teaching me new things many thanks! ;-)
â€“Â Goro
12 mins ago

add a commentÂ |Â

The print $0 block is optional since it is the default action.
â€“Â glenn jackman
16 mins ago

@glennjackman thank you so much for the valuable comment. Would suggest adding a note or just removing it entirely?
â€“Â Goro
14 mins ago

I would leave your answer as it is. FYI the awk command can be "golfed" to awk '/cat/&&/elephant/' IGNORECASE=1 file -- also I believe IGNORECASE is specific to GNU awk
â€“Â glenn jackman
13 mins ago

Perfect! I will add both.... you keep teaching me new things many thanks! ;-)
â€“Â Goro
12 mins ago

The print $0 block is optional since it is the default action.
â€“Â glenn jackman
16 mins ago

@glennjackman thank you so much for the valuable comment. Would suggest adding a note or just removing it entirely?
â€“Â Goro
14 mins ago

I would leave your answer as it is. FYI the awk command can be "golfed" to awk '/cat/&&/elephant/' IGNORECASE=1 file -- also I believe IGNORECASE is specific to GNU awk
â€“Â glenn jackman
13 mins ago

Perfect! I will add both.... you keep teaching me new things many thanks! ;-)
â€“Â Goro
12 mins ago

add a commentÂ |Â

up vote
1
down vote

with GNU sed:

sed -n '/cat/I /elephant/I p' file

or perl

perl -ne 'print if /cat/i and /elephant/i' file

or a single grep

grep -i -e 'cat.*elephant' -e 'elephant.*cat' file

answered 15 mins ago

glenn jackman

49.1k467106

add a commentÂ |Â

up vote
1
down vote

with GNU sed:

sed -n '/cat/I /elephant/I p' file

or perl

perl -ne 'print if /cat/i and /elephant/i' file

or a single grep

grep -i -e 'cat.*elephant' -e 'elephant.*cat' file

answered 15 mins ago

glenn jackman

49.1k467106

add a commentÂ |Â

up vote
1
down vote

with GNU sed:

sed -n '/cat/I /elephant/I p' file

or perl

perl -ne 'print if /cat/i and /elephant/i' file

or a single grep

grep -i -e 'cat.*elephant' -e 'elephant.*cat' file

answered 15 mins ago

glenn jackman

49.1k467106

with GNU sed:

sed -n '/cat/I /elephant/I p' file

or perl

perl -ne 'print if /cat/i and /elephant/i' file

or a single grep

grep -i -e 'cat.*elephant' -e 'elephant.*cat' file

answered 15 mins ago

glenn jackman

49.1k467106

answered 15 mins ago

glenn jackman

49.1k467106

answered 15 mins ago

glenn jackman

49.1k467106

answered 15 mins ago

glenn jackman

49.1k467106

add a commentÂ |Â

gormet is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

gormet is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Post as a guest

Name

Search This Blog

Iyfjky