Merge two greps into single one
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}
I need to extract an ID from the output of another command. Currently my extracting command looks like:
someID=$(command | grep -oP '(?:^Successfullysbuilts)([da-z]{12}$)' | grep -oP '([a-zd]{12})')
Example command output:
---> Using cache
---> 9b4624927fa6
Successfully built 9b4624927fa6
Expected result:
9b4624927fa6
ID extracted from line
Successfully built 9b4624927fa6
How could I merge those two grep statements into single one?
grep regular-expression
edited Apr 12 at 1:02
John Kugelman
1,48011020
asked Apr 11 at 8:05
stetocstetoc
1184
New contributor
stetoc 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 |
I need to extract an ID from the output of another command. Currently my extracting command looks like:
someID=$(command | grep -oP '(?:^Successfullysbuilts)([da-z]{12}$)' | grep -oP '([a-zd]{12})')
Example command output:
---> Using cache
---> 9b4624927fa6
Successfully built 9b4624927fa6
Expected result:
9b4624927fa6
ID extracted from line
Successfully built 9b4624927fa6
How could I merge those two grep statements into single one?
grep regular-expression
edited Apr 12 at 1:02
John Kugelman
1,48011020
asked Apr 11 at 8:05
stetocstetoc
1184
New contributor
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I don't really understand your question. Your command seems to do exactly what you want.
– Sjoerd
Apr 11 at 8:12
6
If you are building a docker image, you can give it a name with the--tagoption. That way, you can supply the name instead of having to parse it from the output. Also,--quietsupresses all output except for the image ID.
– Sjoerd
Apr 11 at 8:13
@Sjoerd Yes, but they want to combine the twogrepcalls into a single command.
– Kusalananda♦
Apr 11 at 8:16
@Sjoerd oh thanks for suggestion, will definitely try it, I need that id exactly for this reason, want to build simple automated pipeline for docker containers
– stetoc
Apr 11 at 8:17
add a comment |
I need to extract an ID from the output of another command. Currently my extracting command looks like:
someID=$(command | grep -oP '(?:^Successfullysbuilts)([da-z]{12}$)' | grep -oP '([a-zd]{12})')
Example command output:
---> Using cache
---> 9b4624927fa6
Successfully built 9b4624927fa6
Expected result:
9b4624927fa6
ID extracted from line
Successfully built 9b4624927fa6
How could I merge those two grep statements into single one?
grep regular-expression
edited Apr 12 at 1:02
John Kugelman
1,48011020
asked Apr 11 at 8:05
stetocstetoc
1184
New contributor
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I need to extract an ID from the output of another command. Currently my extracting command looks like:
someID=$(command | grep -oP '(?:^Successfullysbuilts)([da-z]{12}$)' | grep -oP '([a-zd]{12})')
Example command output:
---> Using cache
---> 9b4624927fa6
Successfully built 9b4624927fa6
Expected result:
9b4624927fa6
ID extracted from line
Successfully built 9b4624927fa6
How could I merge those two grep statements into single one?
grep regular-expression
grep regular-expression
edited Apr 12 at 1:02
John Kugelman
1,48011020
asked Apr 11 at 8:05
stetocstetoc
1184
New contributor
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited Apr 12 at 1:02
John Kugelman
1,48011020
asked Apr 11 at 8:05
stetocstetoc
1184
New contributor
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited Apr 12 at 1:02
John Kugelman
1,48011020
edited Apr 12 at 1:02
John Kugelman
1,48011020
edited Apr 12 at 1:02
John Kugelman
1,48011020
1,48011020
asked Apr 11 at 8:05
stetocstetoc
1184
New contributor
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Apr 11 at 8:05
stetocstetoc
1184
asked Apr 11 at 8:05
stetocstetoc
1184
1184
New contributor
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
stetoc is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I don't really understand your question. Your command seems to do exactly what you want.
– Sjoerd
Apr 11 at 8:12
6
If you are building a docker image, you can give it a name with the--tagoption. That way, you can supply the name instead of having to parse it from the output. Also,--quietsupresses all output except for the image ID.
– Sjoerd
Apr 11 at 8:13
@Sjoerd Yes, but they want to combine the twogrepcalls into a single command.
– Kusalananda♦
Apr 11 at 8:16
@Sjoerd oh thanks for suggestion, will definitely try it, I need that id exactly for this reason, want to build simple automated pipeline for docker containers
– stetoc
Apr 11 at 8:17
add a comment |
I don't really understand your question. Your command seems to do exactly what you want.
– Sjoerd
Apr 11 at 8:12
6
If you are building a docker image, you can give it a name with the--tagoption. That way, you can supply the name instead of having to parse it from the output. Also,--quietsupresses all output except for the image ID.
– Sjoerd
Apr 11 at 8:13
@Sjoerd Yes, but they want to combine the twogrepcalls into a single command.
– Kusalananda♦
Apr 11 at 8:16
@Sjoerd oh thanks for suggestion, will definitely try it, I need that id exactly for this reason, want to build simple automated pipeline for docker containers
– stetoc
Apr 11 at 8:17
I don't really understand your question. Your command seems to do exactly what you want.
– Sjoerd
Apr 11 at 8:12
I don't really understand your question. Your command seems to do exactly what you want.
– Sjoerd
Apr 11 at 8:12
6
6
If you are building a docker image, you can give it a name with the
--tag option. That way, you can supply the name instead of having to parse it from the output. Also, --quiet supresses all output except for the image ID.– Sjoerd
Apr 11 at 8:13
If you are building a docker image, you can give it a name with the
--tag option. That way, you can supply the name instead of having to parse it from the output. Also, --quiet supresses all output except for the image ID.– Sjoerd
Apr 11 at 8:13
@Sjoerd Yes, but they want to combine the two
grep calls into a single command.– Kusalananda♦
Apr 11 at 8:16
@Sjoerd Yes, but they want to combine the two
grep calls into a single command.– Kusalananda♦
Apr 11 at 8:16
@Sjoerd oh thanks for suggestion, will definitely try it, I need that id exactly for this reason, want to build simple automated pipeline for docker containers
– stetoc
Apr 11 at 8:17
@Sjoerd oh thanks for suggestion, will definitely try it, I need that id exactly for this reason, want to build simple automated pipeline for docker containers
– stetoc
Apr 11 at 8:17
add a comment |
2 Answers
2
active
oldest
votes
A slight modification of your first grep works for me:
$ grep -oP '^SuccessfullysbuiltsK[da-z]{12}$' example-output
9b4624927fa6
K in PCRE resets the match start:
The escape sequence
Kcauses any previously matched characters not to
be included in the final matched sequence.
It's similar to a zero-width positive look-behind assertion (?<=Successfully...).
answered Apr 11 at 8:17
murumuru
37.9k590166
4
Kis not a look behind assertion, it just sets the start of the matched text here reported by-o. Compareecho aaaaa | grep -Po 'aK.'withecho aaaaa | grep -Po '(?<=a).'(this time using a look-behind assertion).
– Stéphane Chazelas
Apr 11 at 16:17
1
@StéphaneChazelas: To be fair,perlredescribes it in the same list item as positive look-behind assertions, with language and typography that strongly suggests thinking of one as a variant of the other (even though that can't be the case at a technical level).
– Henning Makholm
Apr 11 at 22:48
1
@HenningMakholm, yes, it's unfortunate. Thepcrepatternman page does not make that confusion. It's trueKcan often be used in place or positive look behind assertions.
– Stéphane Chazelas
Apr 11 at 22:58
@StéphaneChazelas thanks, corrected.
– muru
Apr 12 at 6:14
add a comment |
To get the hexadecimal number at the end of a line that starts with Successfully built, I would probably use sed:
sed -n -E 's/^Successfully built ([[:xdigit:]]+)$/1/p'
This replaces the matching line with the hash and prints it (and no other line).
Or awk:
awk '/^Successfully built [[:xdigit:]]+$/ { print $NF }'
This prints the last whitespace-delimited field of each line matching the regular expression.
In both regular expressions, the [[:xdigit:]]+ expression will match a non-empty string of hexadecimal digits.
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
A slight modification of your first grep works for me:
$ grep -oP '^SuccessfullysbuiltsK[da-z]{12}$' example-output
9b4624927fa6
K in PCRE resets the match start:
The escape sequence
Kcauses any previously matched characters not to
be included in the final matched sequence.
It's similar to a zero-width positive look-behind assertion (?<=Successfully...).
answered Apr 11 at 8:17
murumuru
37.9k590166
4
Kis not a look behind assertion, it just sets the start of the matched text here reported by-o. Compareecho aaaaa | grep -Po 'aK.'withecho aaaaa | grep -Po '(?<=a).'(this time using a look-behind assertion).
– Stéphane Chazelas
Apr 11 at 16:17
1
@StéphaneChazelas: To be fair,perlredescribes it in the same list item as positive look-behind assertions, with language and typography that strongly suggests thinking of one as a variant of the other (even though that can't be the case at a technical level).
– Henning Makholm
Apr 11 at 22:48
1
@HenningMakholm, yes, it's unfortunate. Thepcrepatternman page does not make that confusion. It's trueKcan often be used in place or positive look behind assertions.
– Stéphane Chazelas
Apr 11 at 22:58
@StéphaneChazelas thanks, corrected.
– muru
Apr 12 at 6:14
add a comment |
A slight modification of your first grep works for me:
$ grep -oP '^SuccessfullysbuiltsK[da-z]{12}$' example-output
9b4624927fa6
K in PCRE resets the match start:
The escape sequence
Kcauses any previously matched characters not to
be included in the final matched sequence.
It's similar to a zero-width positive look-behind assertion (?<=Successfully...).
answered Apr 11 at 8:17
murumuru
37.9k590166
4
Kis not a look behind assertion, it just sets the start of the matched text here reported by-o. Compareecho aaaaa | grep -Po 'aK.'withecho aaaaa | grep -Po '(?<=a).'(this time using a look-behind assertion).
– Stéphane Chazelas
Apr 11 at 16:17
1
@StéphaneChazelas: To be fair,perlredescribes it in the same list item as positive look-behind assertions, with language and typography that strongly suggests thinking of one as a variant of the other (even though that can't be the case at a technical level).
– Henning Makholm
Apr 11 at 22:48
1
@HenningMakholm, yes, it's unfortunate. Thepcrepatternman page does not make that confusion. It's trueKcan often be used in place or positive look behind assertions.
– Stéphane Chazelas
Apr 11 at 22:58
@StéphaneChazelas thanks, corrected.
– muru
Apr 12 at 6:14
add a comment |
A slight modification of your first grep works for me:
$ grep -oP '^SuccessfullysbuiltsK[da-z]{12}$' example-output
9b4624927fa6
K in PCRE resets the match start:
The escape sequence
Kcauses any previously matched characters not to
be included in the final matched sequence.
It's similar to a zero-width positive look-behind assertion (?<=Successfully...).
answered Apr 11 at 8:17
murumuru
37.9k590166
A slight modification of your first grep works for me:
$ grep -oP '^SuccessfullysbuiltsK[da-z]{12}$' example-output
9b4624927fa6
K in PCRE resets the match start:
The escape sequence
Kcauses any previously matched characters not to
be included in the final matched sequence.
It's similar to a zero-width positive look-behind assertion (?<=Successfully...).
answered Apr 11 at 8:17
murumuru
37.9k590166
edited Apr 12 at 6:14
answered Apr 11 at 8:17
murumuru
37.9k590166
answered Apr 11 at 8:17
murumuru
37.9k590166
answered Apr 11 at 8:17
murumuru
37.9k590166
37.9k590166
4
Kis not a look behind assertion, it just sets the start of the matched text here reported by-o. Compareecho aaaaa | grep -Po 'aK.'withecho aaaaa | grep -Po '(?<=a).'(this time using a look-behind assertion).
– Stéphane Chazelas
Apr 11 at 16:17
1
@StéphaneChazelas: To be fair,perlredescribes it in the same list item as positive look-behind assertions, with language and typography that strongly suggests thinking of one as a variant of the other (even though that can't be the case at a technical level).
– Henning Makholm
Apr 11 at 22:48
1
@HenningMakholm, yes, it's unfortunate. Thepcrepatternman page does not make that confusion. It's trueKcan often be used in place or positive look behind assertions.
– Stéphane Chazelas
Apr 11 at 22:58
@StéphaneChazelas thanks, corrected.
– muru
Apr 12 at 6:14
add a comment |
4
Kis not a look behind assertion, it just sets the start of the matched text here reported by-o. Compareecho aaaaa | grep -Po 'aK.'withecho aaaaa | grep -Po '(?<=a).'(this time using a look-behind assertion).
– Stéphane Chazelas
Apr 11 at 16:17
1
@StéphaneChazelas: To be fair,perlredescribes it in the same list item as positive look-behind assertions, with language and typography that strongly suggests thinking of one as a variant of the other (even though that can't be the case at a technical level).
– Henning Makholm
Apr 11 at 22:48
1
@HenningMakholm, yes, it's unfortunate. Thepcrepatternman page does not make that confusion. It's trueKcan often be used in place or positive look behind assertions.
– Stéphane Chazelas
Apr 11 at 22:58
@StéphaneChazelas thanks, corrected.
– muru
Apr 12 at 6:14
4
4
K is not a look behind assertion, it just sets the start of the matched text here reported by -o. Compare echo aaaaa | grep -Po 'aK.' with echo aaaaa | grep -Po '(?<=a).' (this time using a look-behind assertion).– Stéphane Chazelas
Apr 11 at 16:17
K is not a look behind assertion, it just sets the start of the matched text here reported by -o. Compare echo aaaaa | grep -Po 'aK.' with echo aaaaa | grep -Po '(?<=a).' (this time using a look-behind assertion).– Stéphane Chazelas
Apr 11 at 16:17
1
1
@StéphaneChazelas: To be fair,
perlre describes it in the same list item as positive look-behind assertions, with language and typography that strongly suggests thinking of one as a variant of the other (even though that can't be the case at a technical level).– Henning Makholm
Apr 11 at 22:48
@StéphaneChazelas: To be fair,
perlre describes it in the same list item as positive look-behind assertions, with language and typography that strongly suggests thinking of one as a variant of the other (even though that can't be the case at a technical level).– Henning Makholm
Apr 11 at 22:48
1
1
@HenningMakholm, yes, it's unfortunate. The
pcrepattern man page does not make that confusion. It's true K can often be used in place or positive look behind assertions.– Stéphane Chazelas
Apr 11 at 22:58
@HenningMakholm, yes, it's unfortunate. The
pcrepattern man page does not make that confusion. It's true K can often be used in place or positive look behind assertions.– Stéphane Chazelas
Apr 11 at 22:58
@StéphaneChazelas thanks, corrected.
– muru
Apr 12 at 6:14
@StéphaneChazelas thanks, corrected.
– muru
Apr 12 at 6:14
add a comment |
To get the hexadecimal number at the end of a line that starts with Successfully built, I would probably use sed:
sed -n -E 's/^Successfully built ([[:xdigit:]]+)$/1/p'
This replaces the matching line with the hash and prints it (and no other line).
Or awk:
awk '/^Successfully built [[:xdigit:]]+$/ { print $NF }'
This prints the last whitespace-delimited field of each line matching the regular expression.
In both regular expressions, the [[:xdigit:]]+ expression will match a non-empty string of hexadecimal digits.
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
add a comment |
To get the hexadecimal number at the end of a line that starts with Successfully built, I would probably use sed:
sed -n -E 's/^Successfully built ([[:xdigit:]]+)$/1/p'
This replaces the matching line with the hash and prints it (and no other line).
Or awk:
awk '/^Successfully built [[:xdigit:]]+$/ { print $NF }'
This prints the last whitespace-delimited field of each line matching the regular expression.
In both regular expressions, the [[:xdigit:]]+ expression will match a non-empty string of hexadecimal digits.
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
add a comment |
To get the hexadecimal number at the end of a line that starts with Successfully built, I would probably use sed:
sed -n -E 's/^Successfully built ([[:xdigit:]]+)$/1/p'
This replaces the matching line with the hash and prints it (and no other line).
Or awk:
awk '/^Successfully built [[:xdigit:]]+$/ { print $NF }'
This prints the last whitespace-delimited field of each line matching the regular expression.
In both regular expressions, the [[:xdigit:]]+ expression will match a non-empty string of hexadecimal digits.
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
To get the hexadecimal number at the end of a line that starts with Successfully built, I would probably use sed:
sed -n -E 's/^Successfully built ([[:xdigit:]]+)$/1/p'
This replaces the matching line with the hash and prints it (and no other line).
Or awk:
awk '/^Successfully built [[:xdigit:]]+$/ { print $NF }'
This prints the last whitespace-delimited field of each line matching the regular expression.
In both regular expressions, the [[:xdigit:]]+ expression will match a non-empty string of hexadecimal digits.
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
answered Apr 11 at 8:11
Kusalananda♦Kusalananda
142k18266441
142k18266441
add a comment |
add a comment |
stetoc is a new contributor. Be nice, and check out our Code of Conduct.
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I don't really understand your question. Your command seems to do exactly what you want.
– Sjoerd
Apr 11 at 8:12
6
If you are building a docker image, you can give it a name with the
--tagoption. That way, you can supply the name instead of having to parse it from the output. Also,--quietsupresses all output except for the image ID.– Sjoerd
Apr 11 at 8:13
@Sjoerd Yes, but they want to combine the two
grepcalls into a single command.– Kusalananda♦
Apr 11 at 8:16
@Sjoerd oh thanks for suggestion, will definitely try it, I need that id exactly for this reason, want to build simple automated pipeline for docker containers
– stetoc
Apr 11 at 8:17