How to filter text, removing lines where a specific position is empty
0
# lshw -c network -businfo
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.0 network Intel Corporation
pci@0000:b5:00.1 network Intel Corporation
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
If I want to pass Device is empty, how to do that?
like
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
text-processing grep text-formatting
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
asked Dec 19 '18 at 1:33
bohan Chen
1
add a comment |
0
# lshw -c network -businfo
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.0 network Intel Corporation
pci@0000:b5:00.1 network Intel Corporation
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
If I want to pass Device is empty, how to do that?
like
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
text-processing grep text-formatting
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
asked Dec 19 '18 at 1:33
bohan Chen
1
add a comment |
0
0
0
# lshw -c network -businfo
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.0 network Intel Corporation
pci@0000:b5:00.1 network Intel Corporation
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
If I want to pass Device is empty, how to do that?
like
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
text-processing grep text-formatting
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
asked Dec 19 '18 at 1:33
bohan Chen
1
# lshw -c network -businfo
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.0 network Intel Corporation
pci@0000:b5:00.1 network Intel Corporation
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
If I want to pass Device is empty, how to do that?
like
Bus info Device Class Description
========================================================
pci@0000:03:00.0 enp3s0 network I210 Gigabit Network Connection
pci@0000:04:00.0 mec_test_1 network I350 Gigabit Network Connection
pci@0000:04:00.1 mec_test_2 network I350 Gigabit Network Connection
pci@0000:04:00.2 mec_test_3 network I350 Gigabit Network Connection
pci@0000:04:00.3 mec_test_4 network I350 Gigabit Network Connection
pci@0000:b5:00.2 mec_test_5 network Intel Corporation
pci@0000:b5:00.3 enp181s0f3 network Intel Corporation
text-processing grep text-formatting
text-processing grep text-formatting
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
asked Dec 19 '18 at 1:33
bohan Chen
1
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
asked Dec 19 '18 at 1:33
bohan Chen
1
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
edited Dec 19 '18 at 1:45
G-Man
12.9k93364
12.9k93364
asked Dec 19 '18 at 1:33
bohan Chen
1
asked Dec 19 '18 at 1:33
bohan Chen
1
asked Dec 19 '18 at 1:33
bohan Chen
1
1
add a comment |
add a comment |
1 Answer
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One simple way would be to ask grep to look for a non-space character in the 19th column:
lshw -c network -businfo | grep -E '^.{18}[^ ]'
The grep command is looking for pattern that's anchored to the beginning of the line; there follows 18 of any character, then something that's not a space.
Alternatively, if there's a TAB there instead of space, use the [:space:] class:
lshw -c network -businfo | grep -E '^.{18}[^[:space:]]'
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
add a comment |
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One simple way would be to ask grep to look for a non-space character in the 19th column:
lshw -c network -businfo | grep -E '^.{18}[^ ]'
The grep command is looking for pattern that's anchored to the beginning of the line; there follows 18 of any character, then something that's not a space.
Alternatively, if there's a TAB there instead of space, use the [:space:] class:
lshw -c network -businfo | grep -E '^.{18}[^[:space:]]'
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
add a comment |
0
One simple way would be to ask grep to look for a non-space character in the 19th column:
lshw -c network -businfo | grep -E '^.{18}[^ ]'
The grep command is looking for pattern that's anchored to the beginning of the line; there follows 18 of any character, then something that's not a space.
Alternatively, if there's a TAB there instead of space, use the [:space:] class:
lshw -c network -businfo | grep -E '^.{18}[^[:space:]]'
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
add a comment |
0
0
0
One simple way would be to ask grep to look for a non-space character in the 19th column:
lshw -c network -businfo | grep -E '^.{18}[^ ]'
The grep command is looking for pattern that's anchored to the beginning of the line; there follows 18 of any character, then something that's not a space.
Alternatively, if there's a TAB there instead of space, use the [:space:] class:
lshw -c network -businfo | grep -E '^.{18}[^[:space:]]'
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
One simple way would be to ask grep to look for a non-space character in the 19th column:
lshw -c network -businfo | grep -E '^.{18}[^ ]'
The grep command is looking for pattern that's anchored to the beginning of the line; there follows 18 of any character, then something that's not a space.
Alternatively, if there's a TAB there instead of space, use the [:space:] class:
lshw -c network -businfo | grep -E '^.{18}[^[:space:]]'
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
answered Dec 19 '18 at 2:10
Jeff Schaller
38.7k1053125
38.7k1053125
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add a comment |
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