Using AWK to parse from XML The Next CEO of Stack OverflowBEGIN and END with the awk commandParse/Manipulate in awkUsing getline with NR in awkhow to use n( and )n as delimiter in awkHow to print same lines multiple times with variables changed using Sed/Awk/ anything?Extract and delete the first occurrence of the XML tag multiple timesUsing awk as simple template engine, how to modify output of last line from getlinecompare and print the values in two arrays using awkCount the number of occurrences of a substring in a stringCompare dates using awk in bash
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Using AWK to parse from XML
The Next CEO of Stack OverflowBEGIN and END with the awk commandParse/Manipulate in awkUsing getline with NR in awkhow to use n( and )n as delimiter in awkHow to print same lines multiple times with variables changed using Sed/Awk/ anything?Extract and delete the first occurrence of the XML tag multiple timesUsing awk as simple template engine, how to modify output of last line from getlinecompare and print the values in two arrays using awkCount the number of occurrences of a substring in a stringCompare dates using awk in bash
I need just the first instance of an ANSI formatted date (YYYY-MM-DD) from the string shown below.
PosMntReq ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
The command I wrote with awk does not provide the date
v_business_date=$(awk -F= 'NR==4 print $5' XMLCD02)
bash-4.2$ echo $v_business_date
"2019-03-27" TxnTm
The line with the date will be in the file many times; I want the first occurrence of this line.
shell-script awk xml
edited 2 days ago
Jeff Schaller♦
44.4k1162143
asked 2 days ago
user313150user313150
54
add a comment |
I need just the first instance of an ANSI formatted date (YYYY-MM-DD) from the string shown below.
PosMntReq ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
The command I wrote with awk does not provide the date
v_business_date=$(awk -F= 'NR==4 print $5' XMLCD02)
bash-4.2$ echo $v_business_date
"2019-03-27" TxnTm
The line with the date will be in the file many times; I want the first occurrence of this line.
shell-script awk xml
edited 2 days ago
Jeff Schaller♦
44.4k1162143
asked 2 days ago
user313150user313150
54
Are you parsing an XML file?
– glenn jackman
2 days ago
Yes..This is an XML file.
– user313150
2 days ago
5
Then you'll want to use an XML parser. xmlstarlet is a good choice for command line work. This simplifies your work to extract value, as you basically just need the XPath to that attribute.
– glenn jackman
2 days ago
2
This Stack Overflow page provides guidance on how to ask a good question: How to create a Minimal, Complete, and Verifiable example
– glenn jackman
2 days ago
add a comment |
I need just the first instance of an ANSI formatted date (YYYY-MM-DD) from the string shown below.
PosMntReq ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
The command I wrote with awk does not provide the date
v_business_date=$(awk -F= 'NR==4 print $5' XMLCD02)
bash-4.2$ echo $v_business_date
"2019-03-27" TxnTm
The line with the date will be in the file many times; I want the first occurrence of this line.
shell-script awk xml
edited 2 days ago
Jeff Schaller♦
44.4k1162143
asked 2 days ago
user313150user313150
54
I need just the first instance of an ANSI formatted date (YYYY-MM-DD) from the string shown below.
PosMntReq ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
The command I wrote with awk does not provide the date
v_business_date=$(awk -F= 'NR==4 print $5' XMLCD02)
bash-4.2$ echo $v_business_date
"2019-03-27" TxnTm
The line with the date will be in the file many times; I want the first occurrence of this line.
shell-script awk xml
shell-script awk xml
edited 2 days ago
Jeff Schaller♦
44.4k1162143
asked 2 days ago
user313150user313150
54
edited 2 days ago
Jeff Schaller♦
44.4k1162143
asked 2 days ago
user313150user313150
54
edited 2 days ago
Jeff Schaller♦
44.4k1162143
edited 2 days ago
Jeff Schaller♦
44.4k1162143
edited 2 days ago
Jeff Schaller♦
44.4k1162143
44.4k1162143
asked 2 days ago
user313150user313150
54
asked 2 days ago
user313150user313150
54
asked 2 days ago
user313150user313150
54
54
Are you parsing an XML file?
– glenn jackman
2 days ago
Yes..This is an XML file.
– user313150
2 days ago
5
Then you'll want to use an XML parser. xmlstarlet is a good choice for command line work. This simplifies your work to extract value, as you basically just need the XPath to that attribute.
– glenn jackman
2 days ago
2
This Stack Overflow page provides guidance on how to ask a good question: How to create a Minimal, Complete, and Verifiable example
– glenn jackman
2 days ago
add a comment |
Are you parsing an XML file?
– glenn jackman
2 days ago
Yes..This is an XML file.
– user313150
2 days ago
5
Then you'll want to use an XML parser. xmlstarlet is a good choice for command line work. This simplifies your work to extract value, as you basically just need the XPath to that attribute.
– glenn jackman
2 days ago
2
This Stack Overflow page provides guidance on how to ask a good question: How to create a Minimal, Complete, and Verifiable example
– glenn jackman
2 days ago
Are you parsing an XML file?
– glenn jackman
2 days ago
Are you parsing an XML file?
– glenn jackman
2 days ago
Yes..This is an XML file.
– user313150
2 days ago
Yes..This is an XML file.
– user313150
2 days ago
5
5
Then you'll want to use an XML parser. xmlstarlet is a good choice for command line work. This simplifies your work to extract value, as you basically just need the XPath to that attribute.
– glenn jackman
2 days ago
Then you'll want to use an XML parser. xmlstarlet is a good choice for command line work. This simplifies your work to extract value, as you basically just need the XPath to that attribute.
– glenn jackman
2 days ago
2
2
This Stack Overflow page provides guidance on how to ask a good question: How to create a Minimal, Complete, and Verifiable example
– glenn jackman
2 days ago
This Stack Overflow page provides guidance on how to ask a good question: How to create a Minimal, Complete, and Verifiable example
– glenn jackman
2 days ago
add a comment |
3 Answers
3
active
oldest
votes
Making some assumptions about your data:
$ cat file.xml
<root>
<node1>
<node2 ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
</node2>
</node1>
</root>
$ txn_tm=$( xmlstarlet sel -t -v '//node2/@TxnTm' file.xml )
$ echo "$txn_tm"
2019-03-27T10:41:13
If you want to select the node based on the ReqId, then we need to adjust the xpath: return the "TxnTm" attribute value for any node with the specified "ReqId" attribute.
xmlstarlet sel -t -v '//*[@ReqId = "XXXXX"]/@TxnTm' -n file.xml
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
It's likely that they want to useReqIdin the selection.
– Kusalananda♦
2 days ago
Argh, not seen that was XML :)
– Gilles Quenot
2 days ago
add a comment |
Don't use regular expressions to parse XML. That way lies madness. But if you insist on a descent into madness and ponies:
sed -En '/TxnTm=/s/^.*TxnTm="//;s/T[0-9:]+".*$//;p;q;' < inputfile
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
well above command is printing all occurrences of date whereas I want to print it only once.
– user313150
2 days ago
2
@user313150 Please update the question with a complete and well formed XML document. You only gave us a partial snippet. We have no way of knowing what the rest of the document looks like or if there are more date attributes elsewhere.
– Kusalananda♦
2 days ago
1
This works for the example input given. If that input was insufficient to advise the answer, this is a case of GIGO, and also a case of don't parse XML with regular expressions.
– DopeGhoti
2 days ago
I have edited the command to stop at the first match.
– DopeGhoti
2 days ago
Thanks a lot ..
– user313150
2 days ago
add a comment |
A simpler option using just grep, albeit again with the advisory that using regular expression tools to parse XML or XHTML is a one-way ticket to sadness-town:
$ grep -m1 -oE '"[0-9]4-[0-9]2-[0-9]2"' input
"2019-03-27"
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
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
Making some assumptions about your data:
$ cat file.xml
<root>
<node1>
<node2 ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
</node2>
</node1>
</root>
$ txn_tm=$( xmlstarlet sel -t -v '//node2/@TxnTm' file.xml )
$ echo "$txn_tm"
2019-03-27T10:41:13
If you want to select the node based on the ReqId, then we need to adjust the xpath: return the "TxnTm" attribute value for any node with the specified "ReqId" attribute.
xmlstarlet sel -t -v '//*[@ReqId = "XXXXX"]/@TxnTm' -n file.xml
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
It's likely that they want to useReqIdin the selection.
– Kusalananda♦
2 days ago
Argh, not seen that was XML :)
– Gilles Quenot
2 days ago
add a comment |
Making some assumptions about your data:
$ cat file.xml
<root>
<node1>
<node2 ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
</node2>
</node1>
</root>
$ txn_tm=$( xmlstarlet sel -t -v '//node2/@TxnTm' file.xml )
$ echo "$txn_tm"
2019-03-27T10:41:13
If you want to select the node based on the ReqId, then we need to adjust the xpath: return the "TxnTm" attribute value for any node with the specified "ReqId" attribute.
xmlstarlet sel -t -v '//*[@ReqId = "XXXXX"]/@TxnTm' -n file.xml
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
It's likely that they want to useReqIdin the selection.
– Kusalananda♦
2 days ago
Argh, not seen that was XML :)
– Gilles Quenot
2 days ago
add a comment |
Making some assumptions about your data:
$ cat file.xml
<root>
<node1>
<node2 ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
</node2>
</node1>
</root>
$ txn_tm=$( xmlstarlet sel -t -v '//node2/@TxnTm' file.xml )
$ echo "$txn_tm"
2019-03-27T10:41:13
If you want to select the node based on the ReqId, then we need to adjust the xpath: return the "TxnTm" attribute value for any node with the specified "ReqId" attribute.
xmlstarlet sel -t -v '//*[@ReqId = "XXXXX"]/@TxnTm' -n file.xml
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
Making some assumptions about your data:
$ cat file.xml
<root>
<node1>
<node2 ReqId="XXXXX" TxnTyp="4" Actn="1" BizDt="2019-03-27" TxnTm="2019-03-27T10:41:13" AdjTyp="3" SetSesID="EOD">
</node2>
</node1>
</root>
$ txn_tm=$( xmlstarlet sel -t -v '//node2/@TxnTm' file.xml )
$ echo "$txn_tm"
2019-03-27T10:41:13
If you want to select the node based on the ReqId, then we need to adjust the xpath: return the "TxnTm" attribute value for any node with the specified "ReqId" attribute.
xmlstarlet sel -t -v '//*[@ReqId = "XXXXX"]/@TxnTm' -n file.xml
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
edited 2 days ago
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
answered 2 days ago
glenn jackmanglenn jackman
52.9k573114
52.9k573114
It's likely that they want to useReqIdin the selection.
– Kusalananda♦
2 days ago
Argh, not seen that was XML :)
– Gilles Quenot
2 days ago
add a comment |
It's likely that they want to useReqIdin the selection.
– Kusalananda♦
2 days ago
Argh, not seen that was XML :)
– Gilles Quenot
2 days ago
It's likely that they want to use
ReqId in the selection.– Kusalananda♦
2 days ago
It's likely that they want to use
ReqId in the selection.– Kusalananda♦
2 days ago
Argh, not seen that was XML :)
– Gilles Quenot
2 days ago
Argh, not seen that was XML :)
– Gilles Quenot
2 days ago
add a comment |
Don't use regular expressions to parse XML. That way lies madness. But if you insist on a descent into madness and ponies:
sed -En '/TxnTm=/s/^.*TxnTm="//;s/T[0-9:]+".*$//;p;q;' < inputfile
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
well above command is printing all occurrences of date whereas I want to print it only once.
– user313150
2 days ago
2
@user313150 Please update the question with a complete and well formed XML document. You only gave us a partial snippet. We have no way of knowing what the rest of the document looks like or if there are more date attributes elsewhere.
– Kusalananda♦
2 days ago
1
This works for the example input given. If that input was insufficient to advise the answer, this is a case of GIGO, and also a case of don't parse XML with regular expressions.
– DopeGhoti
2 days ago
I have edited the command to stop at the first match.
– DopeGhoti
2 days ago
Thanks a lot ..
– user313150
2 days ago
add a comment |
Don't use regular expressions to parse XML. That way lies madness. But if you insist on a descent into madness and ponies:
sed -En '/TxnTm=/s/^.*TxnTm="//;s/T[0-9:]+".*$//;p;q;' < inputfile
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
well above command is printing all occurrences of date whereas I want to print it only once.
– user313150
2 days ago
2
@user313150 Please update the question with a complete and well formed XML document. You only gave us a partial snippet. We have no way of knowing what the rest of the document looks like or if there are more date attributes elsewhere.
– Kusalananda♦
2 days ago
1
This works for the example input given. If that input was insufficient to advise the answer, this is a case of GIGO, and also a case of don't parse XML with regular expressions.
– DopeGhoti
2 days ago
I have edited the command to stop at the first match.
– DopeGhoti
2 days ago
Thanks a lot ..
– user313150
2 days ago
add a comment |
Don't use regular expressions to parse XML. That way lies madness. But if you insist on a descent into madness and ponies:
sed -En '/TxnTm=/s/^.*TxnTm="//;s/T[0-9:]+".*$//;p;q;' < inputfile
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
Don't use regular expressions to parse XML. That way lies madness. But if you insist on a descent into madness and ponies:
sed -En '/TxnTm=/s/^.*TxnTm="//;s/T[0-9:]+".*$//;p;q;' < inputfile
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
edited 2 days ago
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
46.7k56190
well above command is printing all occurrences of date whereas I want to print it only once.
– user313150
2 days ago
2
@user313150 Please update the question with a complete and well formed XML document. You only gave us a partial snippet. We have no way of knowing what the rest of the document looks like or if there are more date attributes elsewhere.
– Kusalananda♦
2 days ago
1
This works for the example input given. If that input was insufficient to advise the answer, this is a case of GIGO, and also a case of don't parse XML with regular expressions.
– DopeGhoti
2 days ago
I have edited the command to stop at the first match.
– DopeGhoti
2 days ago
Thanks a lot ..
– user313150
2 days ago
add a comment |
well above command is printing all occurrences of date whereas I want to print it only once.
– user313150
2 days ago
2
@user313150 Please update the question with a complete and well formed XML document. You only gave us a partial snippet. We have no way of knowing what the rest of the document looks like or if there are more date attributes elsewhere.
– Kusalananda♦
2 days ago
1
This works for the example input given. If that input was insufficient to advise the answer, this is a case of GIGO, and also a case of don't parse XML with regular expressions.
– DopeGhoti
2 days ago
I have edited the command to stop at the first match.
– DopeGhoti
2 days ago
Thanks a lot ..
– user313150
2 days ago
well above command is printing all occurrences of date whereas I want to print it only once.
– user313150
2 days ago
well above command is printing all occurrences of date whereas I want to print it only once.
– user313150
2 days ago
2
2
@user313150 Please update the question with a complete and well formed XML document. You only gave us a partial snippet. We have no way of knowing what the rest of the document looks like or if there are more date attributes elsewhere.
– Kusalananda♦
2 days ago
@user313150 Please update the question with a complete and well formed XML document. You only gave us a partial snippet. We have no way of knowing what the rest of the document looks like or if there are more date attributes elsewhere.
– Kusalananda♦
2 days ago
1
1
This works for the example input given. If that input was insufficient to advise the answer, this is a case of GIGO, and also a case of don't parse XML with regular expressions.
– DopeGhoti
2 days ago
This works for the example input given. If that input was insufficient to advise the answer, this is a case of GIGO, and also a case of don't parse XML with regular expressions.
– DopeGhoti
2 days ago
I have edited the command to stop at the first match.
– DopeGhoti
2 days ago
I have edited the command to stop at the first match.
– DopeGhoti
2 days ago
Thanks a lot ..
– user313150
2 days ago
Thanks a lot ..
– user313150
2 days ago
add a comment |
A simpler option using just grep, albeit again with the advisory that using regular expression tools to parse XML or XHTML is a one-way ticket to sadness-town:
$ grep -m1 -oE '"[0-9]4-[0-9]2-[0-9]2"' input
"2019-03-27"
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
add a comment |
A simpler option using just grep, albeit again with the advisory that using regular expression tools to parse XML or XHTML is a one-way ticket to sadness-town:
$ grep -m1 -oE '"[0-9]4-[0-9]2-[0-9]2"' input
"2019-03-27"
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
add a comment |
A simpler option using just grep, albeit again with the advisory that using regular expression tools to parse XML or XHTML is a one-way ticket to sadness-town:
$ grep -m1 -oE '"[0-9]4-[0-9]2-[0-9]2"' input
"2019-03-27"
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
A simpler option using just grep, albeit again with the advisory that using regular expression tools to parse XML or XHTML is a one-way ticket to sadness-town:
$ grep -m1 -oE '"[0-9]4-[0-9]2-[0-9]2"' input
"2019-03-27"
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
answered 2 days ago
DopeGhotiDopeGhoti
46.7k56190
46.7k56190
add a comment |
add a comment |
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Are you parsing an XML file?
– glenn jackman
2 days ago
Yes..This is an XML file.
– user313150
2 days ago
5
Then you'll want to use an XML parser. xmlstarlet is a good choice for command line work. This simplifies your work to extract value, as you basically just need the XPath to that attribute.
– glenn jackman
2 days ago
2
This Stack Overflow page provides guidance on how to ask a good question: How to create a Minimal, Complete, and Verifiable example
– glenn jackman
2 days ago