Mixing
How to grep while excluding some words?
I wanted to grep the word "force" but most of the output listed is from the command -force.
When I did grep -v "-force" filename , it says grep : orce most probably because of the -f command.
I just want to find a force signal from files using grep. How?
linux unix command
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
add a comment |
I wanted to grep the word "force" but most of the output listed is from the command -force.
When I did grep -v "-force" filename , it says grep : orce most probably because of the -f command.
I just want to find a force signal from files using grep. How?
linux unix command
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
Do you want to say you want to grep "force" but not "-force"?
– HongboZhu
Nov 21 '18 at 11:56
add a comment |
I wanted to grep the word "force" but most of the output listed is from the command -force.
When I did grep -v "-force" filename , it says grep : orce most probably because of the -f command.
I just want to find a force signal from files using grep. How?
linux unix command
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
I wanted to grep the word "force" but most of the output listed is from the command -force.
When I did grep -v "-force" filename , it says grep : orce most probably because of the -f command.
I just want to find a force signal from files using grep. How?
linux unix command
linux unix command
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
asked Nov 21 '18 at 6:29
Nur Sakinah BurhanuddinNur Sakinah Burhanuddin
11
11
Do you want to say you want to grep "force" but not "-force"?
– HongboZhu
Nov 21 '18 at 11:56
add a comment |
Do you want to say you want to grep "force" but not "-force"?
– HongboZhu
Nov 21 '18 at 11:56
Do you want to say you want to grep "force" but not "-force"?
– HongboZhu
Nov 21 '18 at 11:56
Do you want to say you want to grep "force" but not "-force"?
– HongboZhu
Nov 21 '18 at 11:56
add a comment |
5 Answers
5
active
oldest
votes
use grep -v -- "-force" - the double - signals that there are no more options being expected.
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
this is really a very nice trick!
– HongboZhu
Nov 21 '18 at 12:12
the complete answer isgrep -v -- "-force" | grep force
– HongboZhu
Nov 21 '18 at 12:15
add a comment |
If you want to grep specific word from file then we can use cat command
# cat filename.txt | grep force
For other basic Commands
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
cat is redundant here. simply grep the file. Google "useless use of cat" :)
– HongboZhu
Nov 21 '18 at 12:14
add a comment |
Try this:
grep -v "-force" filename | grep force
First use -v to surppress lines containing '-force'. Then grep force in the remaining lines.
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
1
It would be better if you added an explanation to the answer.
– Germano Plebani
Nov 21 '18 at 8:23
In this case, you need to escape the hyphen by backslash:grep -v "-force" filename | grep force.
– HongboZhu
Nov 21 '18 at 12:08
add a comment |
this line maybe simpler:
grep '[^-]force' tmp
it says: grep "force", but only if it does not has a prefix - by using [^]. See some simple regular expression examples here.
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
add a comment |
Use [-] to remove the special significance. Check this out:
> cat rand_file.txt
1. list items of random text
2. -force
3. look similar as the first batch
4. force
5. some random text
> grep -v "-force" rand_file.txt
grep: orce: No such file or directory
> grep -v "[-]force" rand_file.txt | grep force
4. force
>
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
I think you need to add| grep forceto the end of your last command as only line 4 is desirable (force signal).
– HongboZhu
Nov 21 '18 at 12:03
yes..right..let me update the answer
– stack0114106
Nov 21 '18 at 12:07
add a comment |
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5 Answers
5
active
oldest
votes
5 Answers
5
active
oldest
votes
active
oldest
votes
active
oldest
votes
use grep -v -- "-force" - the double - signals that there are no more options being expected.
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
this is really a very nice trick!
– HongboZhu
Nov 21 '18 at 12:12
the complete answer isgrep -v -- "-force" | grep force
– HongboZhu
Nov 21 '18 at 12:15
add a comment |
use grep -v -- "-force" - the double - signals that there are no more options being expected.
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
this is really a very nice trick!
– HongboZhu
Nov 21 '18 at 12:12
the complete answer isgrep -v -- "-force" | grep force
– HongboZhu
Nov 21 '18 at 12:15
add a comment |
use grep -v -- "-force" - the double - signals that there are no more options being expected.
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
use grep -v -- "-force" - the double - signals that there are no more options being expected.
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
edited Nov 21 '18 at 12:16
HongboZhu
2,90922128
2,90922128
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
answered Nov 21 '18 at 6:55
Andreas P.Andreas P.
111
111
this is really a very nice trick!
– HongboZhu
Nov 21 '18 at 12:12
the complete answer isgrep -v -- "-force" | grep force
– HongboZhu
Nov 21 '18 at 12:15
add a comment |
this is really a very nice trick!
– HongboZhu
Nov 21 '18 at 12:12
the complete answer isgrep -v -- "-force" | grep force
– HongboZhu
Nov 21 '18 at 12:15
this is really a very nice trick!
– HongboZhu
Nov 21 '18 at 12:12
this is really a very nice trick!
– HongboZhu
Nov 21 '18 at 12:12
the complete answer is
grep -v -- "-force" | grep force– HongboZhu
Nov 21 '18 at 12:15
the complete answer is
grep -v -- "-force" | grep force– HongboZhu
Nov 21 '18 at 12:15
add a comment |
If you want to grep specific word from file then we can use cat command
# cat filename.txt | grep force
For other basic Commands
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
cat is redundant here. simply grep the file. Google "useless use of cat" :)
– HongboZhu
Nov 21 '18 at 12:14
add a comment |
If you want to grep specific word from file then we can use cat command
# cat filename.txt | grep force
For other basic Commands
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
cat is redundant here. simply grep the file. Google "useless use of cat" :)
– HongboZhu
Nov 21 '18 at 12:14
add a comment |
If you want to grep specific word from file then we can use cat command
# cat filename.txt | grep force
For other basic Commands
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
If you want to grep specific word from file then we can use cat command
# cat filename.txt | grep force
For other basic Commands
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
answered Nov 21 '18 at 7:10
Vinay PatilVinay Patil
11
11
cat is redundant here. simply grep the file. Google "useless use of cat" :)
– HongboZhu
Nov 21 '18 at 12:14
add a comment |
cat is redundant here. simply grep the file. Google "useless use of cat" :)
– HongboZhu
Nov 21 '18 at 12:14
cat is redundant here. simply grep the file. Google "useless use of cat" :)
– HongboZhu
Nov 21 '18 at 12:14
cat is redundant here. simply grep the file. Google "useless use of cat" :)
– HongboZhu
Nov 21 '18 at 12:14
add a comment |
Try this:
grep -v "-force" filename | grep force
First use -v to surppress lines containing '-force'. Then grep force in the remaining lines.
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
1
It would be better if you added an explanation to the answer.
– Germano Plebani
Nov 21 '18 at 8:23
In this case, you need to escape the hyphen by backslash:grep -v "-force" filename | grep force.
– HongboZhu
Nov 21 '18 at 12:08
add a comment |
Try this:
grep -v "-force" filename | grep force
First use -v to surppress lines containing '-force'. Then grep force in the remaining lines.
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
1
It would be better if you added an explanation to the answer.
– Germano Plebani
Nov 21 '18 at 8:23
In this case, you need to escape the hyphen by backslash:grep -v "-force" filename | grep force.
– HongboZhu
Nov 21 '18 at 12:08
add a comment |
Try this:
grep -v "-force" filename | grep force
First use -v to surppress lines containing '-force'. Then grep force in the remaining lines.
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
Try this:
grep -v "-force" filename | grep force
First use -v to surppress lines containing '-force'. Then grep force in the remaining lines.
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
edited Nov 21 '18 at 11:58
HongboZhu
2,90922128
2,90922128
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
answered Nov 21 '18 at 7:01
Mayank PorwalMayank Porwal
4,9202724
4,9202724
1
It would be better if you added an explanation to the answer.
– Germano Plebani
Nov 21 '18 at 8:23
In this case, you need to escape the hyphen by backslash:grep -v "-force" filename | grep force.
– HongboZhu
Nov 21 '18 at 12:08
add a comment |
1
It would be better if you added an explanation to the answer.
– Germano Plebani
Nov 21 '18 at 8:23
In this case, you need to escape the hyphen by backslash:grep -v "-force" filename | grep force.
– HongboZhu
Nov 21 '18 at 12:08
1
1
It would be better if you added an explanation to the answer.
– Germano Plebani
Nov 21 '18 at 8:23
It would be better if you added an explanation to the answer.
– Germano Plebani
Nov 21 '18 at 8:23
In this case, you need to escape the hyphen by backslash:
grep -v "-force" filename | grep force .– HongboZhu
Nov 21 '18 at 12:08
In this case, you need to escape the hyphen by backslash:
grep -v "-force" filename | grep force .– HongboZhu
Nov 21 '18 at 12:08
add a comment |
this line maybe simpler:
grep '[^-]force' tmp
it says: grep "force", but only if it does not has a prefix - by using [^]. See some simple regular expression examples here.
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
add a comment |
this line maybe simpler:
grep '[^-]force' tmp
it says: grep "force", but only if it does not has a prefix - by using [^]. See some simple regular expression examples here.
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
add a comment |
this line maybe simpler:
grep '[^-]force' tmp
it says: grep "force", but only if it does not has a prefix - by using [^]. See some simple regular expression examples here.
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
this line maybe simpler:
grep '[^-]force' tmp
it says: grep "force", but only if it does not has a prefix - by using [^]. See some simple regular expression examples here.
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
answered Nov 21 '18 at 12:06
HongboZhuHongboZhu
2,90922128
2,90922128
add a comment |
add a comment |
Use [-] to remove the special significance. Check this out:
> cat rand_file.txt
1. list items of random text
2. -force
3. look similar as the first batch
4. force
5. some random text
> grep -v "-force" rand_file.txt
grep: orce: No such file or directory
> grep -v "[-]force" rand_file.txt | grep force
4. force
>
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
I think you need to add| grep forceto the end of your last command as only line 4 is desirable (force signal).
– HongboZhu
Nov 21 '18 at 12:03
yes..right..let me update the answer
– stack0114106
Nov 21 '18 at 12:07
add a comment |
Use [-] to remove the special significance. Check this out:
> cat rand_file.txt
1. list items of random text
2. -force
3. look similar as the first batch
4. force
5. some random text
> grep -v "-force" rand_file.txt
grep: orce: No such file or directory
> grep -v "[-]force" rand_file.txt | grep force
4. force
>
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
I think you need to add| grep forceto the end of your last command as only line 4 is desirable (force signal).
– HongboZhu
Nov 21 '18 at 12:03
yes..right..let me update the answer
– stack0114106
Nov 21 '18 at 12:07
add a comment |
Use [-] to remove the special significance. Check this out:
> cat rand_file.txt
1. list items of random text
2. -force
3. look similar as the first batch
4. force
5. some random text
> grep -v "-force" rand_file.txt
grep: orce: No such file or directory
> grep -v "[-]force" rand_file.txt | grep force
4. force
>
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
Use [-] to remove the special significance. Check this out:
> cat rand_file.txt
1. list items of random text
2. -force
3. look similar as the first batch
4. force
5. some random text
> grep -v "-force" rand_file.txt
grep: orce: No such file or directory
> grep -v "[-]force" rand_file.txt | grep force
4. force
>
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
edited Nov 21 '18 at 12:10
HongboZhu
2,90922128
2,90922128
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
answered Nov 21 '18 at 10:05
stack0114106stack0114106
3,4242418
3,4242418
I think you need to add| grep forceto the end of your last command as only line 4 is desirable (force signal).
– HongboZhu
Nov 21 '18 at 12:03
yes..right..let me update the answer
– stack0114106
Nov 21 '18 at 12:07
add a comment |
I think you need to add| grep forceto the end of your last command as only line 4 is desirable (force signal).
– HongboZhu
Nov 21 '18 at 12:03
yes..right..let me update the answer
– stack0114106
Nov 21 '18 at 12:07
I think you need to add
| grep force to the end of your last command as only line 4 is desirable (force signal).– HongboZhu
Nov 21 '18 at 12:03
I think you need to add
| grep force to the end of your last command as only line 4 is desirable (force signal).– HongboZhu
Nov 21 '18 at 12:03
yes..right..let me update the answer
– stack0114106
Nov 21 '18 at 12:07
yes..right..let me update the answer
– stack0114106
Nov 21 '18 at 12:07
add a comment |
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Do you want to say you want to grep "force" but not "-force"?
– HongboZhu
Nov 21 '18 at 11:56