awk: print lines after match to end of file
I'm trying to parse a usage message like:
Usage:
docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
docker-compose -h|--help
...
Commands:
build Build or rebuild services
bundle Generate a Docker bundle from the Compose file
...
to grab the Command names only. So I'm looking to skip all lines up to and including the Commands: line, then print the first word on all following lines, i.e.
build
bundle
...
Currently I'm doing
docker-compose --help | sed -e '1,/Commands:/d' | awk '{ print $1 }'
and while this works, I suspect I could do the whole thing with a single awk. The closest I've got so far is:
docker-compose --help | awk '/Commands:/,0 { print $1 }'
But that includes the matched Commands: line. Can it be done?
text-processing awk
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
asked Jun 20 '17 at 0:23
ivanivan
722719
add a comment |
I'm trying to parse a usage message like:
Usage:
docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
docker-compose -h|--help
...
Commands:
build Build or rebuild services
bundle Generate a Docker bundle from the Compose file
...
to grab the Command names only. So I'm looking to skip all lines up to and including the Commands: line, then print the first word on all following lines, i.e.
build
bundle
...
Currently I'm doing
docker-compose --help | sed -e '1,/Commands:/d' | awk '{ print $1 }'
and while this works, I suspect I could do the whole thing with a single awk. The closest I've got so far is:
docker-compose --help | awk '/Commands:/,0 { print $1 }'
But that includes the matched Commands: line. Can it be done?
text-processing awk
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
asked Jun 20 '17 at 0:23
ivanivan
722719
add a comment |
I'm trying to parse a usage message like:
Usage:
docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
docker-compose -h|--help
...
Commands:
build Build or rebuild services
bundle Generate a Docker bundle from the Compose file
...
to grab the Command names only. So I'm looking to skip all lines up to and including the Commands: line, then print the first word on all following lines, i.e.
build
bundle
...
Currently I'm doing
docker-compose --help | sed -e '1,/Commands:/d' | awk '{ print $1 }'
and while this works, I suspect I could do the whole thing with a single awk. The closest I've got so far is:
docker-compose --help | awk '/Commands:/,0 { print $1 }'
But that includes the matched Commands: line. Can it be done?
text-processing awk
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
asked Jun 20 '17 at 0:23
ivanivan
722719
I'm trying to parse a usage message like:
Usage:
docker-compose [-f <arg>...] [options] [COMMAND] [ARGS...]
docker-compose -h|--help
...
Commands:
build Build or rebuild services
bundle Generate a Docker bundle from the Compose file
...
to grab the Command names only. So I'm looking to skip all lines up to and including the Commands: line, then print the first word on all following lines, i.e.
build
bundle
...
Currently I'm doing
docker-compose --help | sed -e '1,/Commands:/d' | awk '{ print $1 }'
and while this works, I suspect I could do the whole thing with a single awk. The closest I've got so far is:
docker-compose --help | awk '/Commands:/,0 { print $1 }'
But that includes the matched Commands: line. Can it be done?
text-processing awk
text-processing awk
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
asked Jun 20 '17 at 0:23
ivanivan
722719
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
asked Jun 20 '17 at 0:23
ivanivan
722719
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
edited Jun 20 '17 at 2:31
Stephen Rauch
3,344101428
3,344101428
asked Jun 20 '17 at 0:23
ivanivan
722719
asked Jun 20 '17 at 0:23
ivanivan
722719
asked Jun 20 '17 at 0:23
ivanivan
722719
722719
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
If you mark the presence of your fence, then you can use it to decide to print the next line and after like:
awk 'x==1 {print $1} /Commands:/ {x=1}'
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
This is great, thanks. It looks like I don't even need the,0anymore.
– ivan
Jun 20 '17 at 1:26
1
note thatprint $1only prints the first word. useprintorprint $0to print the whole line
– Chris Maes
Aug 29 '18 at 12:15
add a comment |
Note that 1,/Commands:/d easily translates to awk like:
awk 'NR==1, $1 == "Commands:" {next}; NF {print $1}'
A difference with sed is that it will also work if Command: is on the first line.
And the NF {print $1} can be translated to sed:
sed -n '1,/^Commands:/!s/^[[:blank:]]*([^[:blank:]]{1,}).*/1/p'
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
add a comment |
sed -n '/Commands:/,$p' filename | awk 'NR!=1{print $1}'
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you mark the presence of your fence, then you can use it to decide to print the next line and after like:
awk 'x==1 {print $1} /Commands:/ {x=1}'
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
This is great, thanks. It looks like I don't even need the,0anymore.
– ivan
Jun 20 '17 at 1:26
1
note thatprint $1only prints the first word. useprintorprint $0to print the whole line
– Chris Maes
Aug 29 '18 at 12:15
add a comment |
If you mark the presence of your fence, then you can use it to decide to print the next line and after like:
awk 'x==1 {print $1} /Commands:/ {x=1}'
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
This is great, thanks. It looks like I don't even need the,0anymore.
– ivan
Jun 20 '17 at 1:26
1
note thatprint $1only prints the first word. useprintorprint $0to print the whole line
– Chris Maes
Aug 29 '18 at 12:15
add a comment |
If you mark the presence of your fence, then you can use it to decide to print the next line and after like:
awk 'x==1 {print $1} /Commands:/ {x=1}'
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
If you mark the presence of your fence, then you can use it to decide to print the next line and after like:
awk 'x==1 {print $1} /Commands:/ {x=1}'
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
edited Jun 20 '17 at 2:31
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
answered Jun 20 '17 at 0:43
Stephen RauchStephen Rauch
3,344101428
3,344101428
This is great, thanks. It looks like I don't even need the,0anymore.
– ivan
Jun 20 '17 at 1:26
1
note thatprint $1only prints the first word. useprintorprint $0to print the whole line
– Chris Maes
Aug 29 '18 at 12:15
add a comment |
This is great, thanks. It looks like I don't even need the,0anymore.
– ivan
Jun 20 '17 at 1:26
1
note thatprint $1only prints the first word. useprintorprint $0to print the whole line
– Chris Maes
Aug 29 '18 at 12:15
This is great, thanks. It looks like I don't even need the
,0 anymore.– ivan
Jun 20 '17 at 1:26
This is great, thanks. It looks like I don't even need the
,0 anymore.– ivan
Jun 20 '17 at 1:26
1
1
note that
print $1 only prints the first word. use print or print $0 to print the whole line– Chris Maes
Aug 29 '18 at 12:15
note that
print $1 only prints the first word. use print or print $0 to print the whole line– Chris Maes
Aug 29 '18 at 12:15
add a comment |
Note that 1,/Commands:/d easily translates to awk like:
awk 'NR==1, $1 == "Commands:" {next}; NF {print $1}'
A difference with sed is that it will also work if Command: is on the first line.
And the NF {print $1} can be translated to sed:
sed -n '1,/^Commands:/!s/^[[:blank:]]*([^[:blank:]]{1,}).*/1/p'
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
add a comment |
Note that 1,/Commands:/d easily translates to awk like:
awk 'NR==1, $1 == "Commands:" {next}; NF {print $1}'
A difference with sed is that it will also work if Command: is on the first line.
And the NF {print $1} can be translated to sed:
sed -n '1,/^Commands:/!s/^[[:blank:]]*([^[:blank:]]{1,}).*/1/p'
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
add a comment |
Note that 1,/Commands:/d easily translates to awk like:
awk 'NR==1, $1 == "Commands:" {next}; NF {print $1}'
A difference with sed is that it will also work if Command: is on the first line.
And the NF {print $1} can be translated to sed:
sed -n '1,/^Commands:/!s/^[[:blank:]]*([^[:blank:]]{1,}).*/1/p'
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
Note that 1,/Commands:/d easily translates to awk like:
awk 'NR==1, $1 == "Commands:" {next}; NF {print $1}'
A difference with sed is that it will also work if Command: is on the first line.
And the NF {print $1} can be translated to sed:
sed -n '1,/^Commands:/!s/^[[:blank:]]*([^[:blank:]]{1,}).*/1/p'
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
answered Jun 20 '17 at 5:39
Stéphane ChazelasStéphane Chazelas
309k57582942
309k57582942
add a comment |
add a comment |
sed -n '/Commands:/,$p' filename | awk 'NR!=1{print $1}'
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
sed -n '/Commands:/,$p' filename | awk 'NR!=1{print $1}'
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
sed -n '/Commands:/,$p' filename | awk 'NR!=1{print $1}'
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
sed -n '/Commands:/,$p' filename | awk 'NR!=1{print $1}'
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
edited 8 mins ago
Michael Mrozek♦
61.7k29192211
61.7k29192211
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
answered 1 hour ago
Deepika Reddy BilluriDeepika Reddy Billuri
12
12
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Deepika Reddy Billuri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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