Using grep to filtergrep *stringA*[number]Using the grep filterHow to filter content between specific keywords using grep?Using individual lines from grep outputs“egrep: empty (sub)expression” when attempting to filter out words from a listHow to filter pair of bracesOutput current day using calGrep multiple files and output to multiple files in a single commandHow to use grep to search for a line with one of two words but not both?Use multiple expressions in grep consumer

Using grep to filtergrep stringA[number]Using the grep filterHow to filter content between specific keywords using grep?Using individual lines from grep outputs“egrep: empty (sub)expression” when attempting to filter out words from a listHow to filter pair of bracesOutput current day using calGrep multiple files and output to multiple files in a single commandHow to use grep to search for a line with one of two words but not both?Use multiple expressions in grep consumer

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Using grep to filter

grep *stringA*[number]Using the grep filterHow to filter content between specific keywords using grep?Using individual lines from grep outputs“egrep: empty (sub)expression” when attempting to filter out words from a listHow to filter pair of bracesOutput current day using calGrep multiple files and output to multiple files in a single commandHow to use grep to search for a line with one of two words but not both?Use multiple expressions in grep consumer

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

Suppose I have a file.txt with the following lines :

hello myname1 is yellow.pcapng red
festive myname33 is hddd.pcapng dfdf
crude myname44 is hello.pcapng

Now my goal is to filter to the lines so it outputs to out.txt as follows :

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

Now I know that I can use :

grep -oh "w*mynamew*" /tmp/file.txt > /tmp/out.txt
grep -o '[^ ]+g' /tmp/file.txt > /tmp/out.txt

to get the both respective parts of the expression individually.
How do I combine these commands so that I get my desired output?

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

asked Jun 3 at 18:01

gangsignwall

132

New contributor

3

do you have to use grep? You have a problem that's begging for an awk solution, and awk should be available everywhere that grep is.

– Jeff Schaller♦
Jun 3 at 18:05

I was only familiar with grep and not awk, could you show me how to do using awk possibly?

– gangsignwall
Jun 3 at 18:13

@JeffSchaller It's actually begging for a cut solution, since this is exactly what cut is supposed to do

– ChatterOne
Jun 4 at 9:57

Good thing there is a cut solution, @ChatterOne!

– Jeff Schaller♦
Jun 4 at 10:30

add a comment |

Suppose I have a file.txt with the following lines :

hello myname1 is yellow.pcapng red
festive myname33 is hddd.pcapng dfdf
crude myname44 is hello.pcapng

Now my goal is to filter to the lines so it outputs to out.txt as follows :

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

Now I know that I can use :

grep -oh "w*mynamew*" /tmp/file.txt > /tmp/out.txt
grep -o '[^ ]+g' /tmp/file.txt > /tmp/out.txt

to get the both respective parts of the expression individually.
How do I combine these commands so that I get my desired output?

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

asked Jun 3 at 18:01

gangsignwall

132

New contributor

3

do you have to use grep? You have a problem that's begging for an awk solution, and awk should be available everywhere that grep is.

– Jeff Schaller♦
Jun 3 at 18:05

I was only familiar with grep and not awk, could you show me how to do using awk possibly?

– gangsignwall
Jun 3 at 18:13

@JeffSchaller It's actually begging for a cut solution, since this is exactly what cut is supposed to do

– ChatterOne
Jun 4 at 9:57

Good thing there is a cut solution, @ChatterOne!

– Jeff Schaller♦
Jun 4 at 10:30

add a comment |

Suppose I have a file.txt with the following lines :

hello myname1 is yellow.pcapng red
festive myname33 is hddd.pcapng dfdf
crude myname44 is hello.pcapng

Now my goal is to filter to the lines so it outputs to out.txt as follows :

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

Now I know that I can use :

grep -oh "w*mynamew*" /tmp/file.txt > /tmp/out.txt
grep -o '[^ ]+g' /tmp/file.txt > /tmp/out.txt

to get the both respective parts of the expression individually.
How do I combine these commands so that I get my desired output?

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

asked Jun 3 at 18:01

gangsignwall

132

New contributor

Suppose I have a file.txt with the following lines :

hello myname1 is yellow.pcapng red
festive myname33 is hddd.pcapng dfdf
crude myname44 is hello.pcapng

Now my goal is to filter to the lines so it outputs to out.txt as follows :

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

Now I know that I can use :

grep -oh "w*mynamew*" /tmp/file.txt > /tmp/out.txt
grep -o '[^ ]+g' /tmp/file.txt > /tmp/out.txt

to get the both respective parts of the expression individually.
How do I combine these commands so that I get my desired output?

grep

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

asked Jun 3 at 18:01

gangsignwall

132

New contributor

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

asked Jun 3 at 18:01

gangsignwall

132

New contributor

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

edited Jun 3 at 18:06

Jeff Schaller♦

46.4k1166151

asked Jun 3 at 18:01

gangsignwall

132

New contributor

asked Jun 3 at 18:01

gangsignwall

132

asked Jun 3 at 18:01

gangsignwall

132

New contributor

3

do you have to use grep? You have a problem that's begging for an awk solution, and awk should be available everywhere that grep is.

– Jeff Schaller♦
Jun 3 at 18:05

I was only familiar with grep and not awk, could you show me how to do using awk possibly?

– gangsignwall
Jun 3 at 18:13

@JeffSchaller It's actually begging for a cut solution, since this is exactly what cut is supposed to do

– ChatterOne
Jun 4 at 9:57

Good thing there is a cut solution, @ChatterOne!

– Jeff Schaller♦
Jun 4 at 10:30

add a comment |

3

do you have to use grep? You have a problem that's begging for an awk solution, and awk should be available everywhere that grep is.

– Jeff Schaller♦
Jun 3 at 18:05

I was only familiar with grep and not awk, could you show me how to do using awk possibly?

– gangsignwall
Jun 3 at 18:13

@JeffSchaller It's actually begging for a cut solution, since this is exactly what cut is supposed to do

– ChatterOne
Jun 4 at 9:57

Good thing there is a cut solution, @ChatterOne!

– Jeff Schaller♦
Jun 4 at 10:30

do you have to use grep? You have a problem that's begging for an awk solution, and awk should be available everywhere that grep is.

– Jeff Schaller♦
Jun 3 at 18:05

I was only familiar with grep and not awk, could you show me how to do using awk possibly?

– gangsignwall
Jun 3 at 18:13

@JeffSchaller It's actually begging for a cut solution, since this is exactly what cut is supposed to do

– ChatterOne
Jun 4 at 9:57

Good thing there is a cut solution, @ChatterOne!

– Jeff Schaller♦
Jun 4 at 10:30

add a comment |

5 Answers
5

active

oldest

votes

Given your sample data, you could assume that words #2 and #4 are what you want to extract; you'd express that in awk with:

awk ' print $2, $4 ' < /tmp/file.txt > /tmp/out.txt

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

add a comment |

You could use cut:

cut -d' ' -f2,4 < /tmp/file.txt > /tmp/out.txt

answered Jun 4 at 7:02

pLumo

5,7921125

add a comment |

Using awk instead of grep.

awk 'print $2,$4' /tmp/file.txt > /tmp/out.txt

You are piping the output of cat file.txt to awk.

Then using awk expressions 'print $2,$4', you are printing the 2nd and 4th field of the split line, with a space to separate.

Your output will be how you desire.

edited Jun 4 at 6:33

Nasir Riley

3,3252410

answered Jun 3 at 18:19

Mylo Mylo

211

New contributor

add a comment |

Could do this too:

cat file.txt | sed "s/.*(myname[0-9]*) is ([^ ]*).*/1 2/g" | grep ^myname > /tmp/out.txt

answered Jun 3 at 18:23

Ulysses_

115

add a comment |

Since shell script method has been provided above, Tried in Python and worked fine too

#!/usr/bin/python
o=[]
k=open('i','r')
for z in k:
 o.append(z.strip().split(' ')[1])
 o.append(z.strip().split(' ')[3])
for d in range(0,len(o),2):
 print " ".join(o[d:d+2])

output

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

add a comment |

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5 Answers
5

active

oldest

votes

5 Answers
5

active

oldest

votes

Given your sample data, you could assume that words #2 and #4 are what you want to extract; you'd express that in awk with:

awk ' print $2, $4 ' < /tmp/file.txt > /tmp/out.txt

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

add a comment |

Given your sample data, you could assume that words #2 and #4 are what you want to extract; you'd express that in awk with:

awk ' print $2, $4 ' < /tmp/file.txt > /tmp/out.txt

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

add a comment |

Given your sample data, you could assume that words #2 and #4 are what you want to extract; you'd express that in awk with:

awk ' print $2, $4 ' < /tmp/file.txt > /tmp/out.txt

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

Given your sample data, you could assume that words #2 and #4 are what you want to extract; you'd express that in awk with:

awk ' print $2, $4 ' < /tmp/file.txt > /tmp/out.txt

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

edited Jun 3 at 18:42

Kusalananda♦

150k18288474

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

answered Jun 3 at 18:18

Jeff Schaller♦

46.4k1166151

add a comment |

You could use cut:

cut -d' ' -f2,4 < /tmp/file.txt > /tmp/out.txt

answered Jun 4 at 7:02

pLumo

5,7921125

add a comment |

You could use cut:

cut -d' ' -f2,4 < /tmp/file.txt > /tmp/out.txt

answered Jun 4 at 7:02

pLumo

5,7921125

add a comment |

You could use cut:

cut -d' ' -f2,4 < /tmp/file.txt > /tmp/out.txt

answered Jun 4 at 7:02

pLumo

5,7921125

You could use cut:

cut -d' ' -f2,4 < /tmp/file.txt > /tmp/out.txt

answered Jun 4 at 7:02

pLumo

5,7921125

answered Jun 4 at 7:02

pLumo

5,7921125

answered Jun 4 at 7:02

pLumo

5,7921125

answered Jun 4 at 7:02

pLumo

5,7921125

add a comment |

Using awk instead of grep.

awk 'print $2,$4' /tmp/file.txt > /tmp/out.txt

You are piping the output of cat file.txt to awk.

Then using awk expressions 'print $2,$4', you are printing the 2nd and 4th field of the split line, with a space to separate.

Your output will be how you desire.

edited Jun 4 at 6:33

Nasir Riley

3,3252410

answered Jun 3 at 18:19

Mylo Mylo

211

New contributor

add a comment |

Using awk instead of grep.

awk 'print $2,$4' /tmp/file.txt > /tmp/out.txt

You are piping the output of cat file.txt to awk.

Then using awk expressions 'print $2,$4', you are printing the 2nd and 4th field of the split line, with a space to separate.

Your output will be how you desire.

edited Jun 4 at 6:33

Nasir Riley

3,3252410

answered Jun 3 at 18:19

Mylo Mylo

211

New contributor

add a comment |

Using awk instead of grep.

awk 'print $2,$4' /tmp/file.txt > /tmp/out.txt

You are piping the output of cat file.txt to awk.

Then using awk expressions 'print $2,$4', you are printing the 2nd and 4th field of the split line, with a space to separate.

Your output will be how you desire.

edited Jun 4 at 6:33

Nasir Riley

3,3252410

answered Jun 3 at 18:19

Mylo Mylo

211

New contributor

Using awk instead of grep.

awk 'print $2,$4' /tmp/file.txt > /tmp/out.txt

You are piping the output of cat file.txt to awk.

Then using awk expressions 'print $2,$4', you are printing the 2nd and 4th field of the split line, with a space to separate.

Your output will be how you desire.

edited Jun 4 at 6:33

Nasir Riley

3,3252410

answered Jun 3 at 18:19

Mylo Mylo

211

New contributor

edited Jun 4 at 6:33

Nasir Riley

3,3252410

edited Jun 4 at 6:33

Nasir Riley

3,3252410

edited Jun 4 at 6:33

Nasir Riley

3,3252410

answered Jun 3 at 18:19

Mylo Mylo

211

New contributor

answered Jun 3 at 18:19

Mylo Mylo

211

answered Jun 3 at 18:19

Mylo Mylo

211

New contributor

add a comment |

Could do this too:

cat file.txt | sed "s/.*(myname[0-9]*) is ([^ ]*).*/1 2/g" | grep ^myname > /tmp/out.txt

answered Jun 3 at 18:23

Ulysses_

115

add a comment |

Could do this too:

cat file.txt | sed "s/.*(myname[0-9]*) is ([^ ]*).*/1 2/g" | grep ^myname > /tmp/out.txt

answered Jun 3 at 18:23

Ulysses_

115

add a comment |

Could do this too:

cat file.txt | sed "s/.*(myname[0-9]*) is ([^ ]*).*/1 2/g" | grep ^myname > /tmp/out.txt

answered Jun 3 at 18:23

Ulysses_

115

Could do this too:

cat file.txt | sed "s/.*(myname[0-9]*) is ([^ ]*).*/1 2/g" | grep ^myname > /tmp/out.txt

answered Jun 3 at 18:23

Ulysses_

115

answered Jun 3 at 18:23

Ulysses_

115

answered Jun 3 at 18:23

Ulysses_

115

answered Jun 3 at 18:23

Ulysses_

115

add a comment |

Since shell script method has been provided above, Tried in Python and worked fine too

#!/usr/bin/python
o=[]
k=open('i','r')
for z in k:
 o.append(z.strip().split(' ')[1])
 o.append(z.strip().split(' ')[3])
for d in range(0,len(o),2):
 print " ".join(o[d:d+2])

output

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

add a comment |

Since shell script method has been provided above, Tried in Python and worked fine too

#!/usr/bin/python
o=[]
k=open('i','r')
for z in k:
 o.append(z.strip().split(' ')[1])
 o.append(z.strip().split(' ')[3])
for d in range(0,len(o),2):
 print " ".join(o[d:d+2])

output

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

add a comment |

Since shell script method has been provided above, Tried in Python and worked fine too

#!/usr/bin/python
o=[]
k=open('i','r')
for z in k:
 o.append(z.strip().split(' ')[1])
 o.append(z.strip().split(' ')[3])
for d in range(0,len(o),2):
 print " ".join(o[d:d+2])

output

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

Since shell script method has been provided above, Tried in Python and worked fine too

#!/usr/bin/python
o=[]
k=open('i','r')
for z in k:
 o.append(z.strip().split(' ')[1])
 o.append(z.strip().split(' ')[3])
for d in range(0,len(o),2):
 print " ".join(o[d:d+2])

output

myname1 yellow.pcapng
myname33 hddd.pcapng
myname44 hello.pcapng

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

answered Jun 4 at 16:09

Praveen Kumar BS

2,0572311

add a comment |

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

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