save multiple matches in a list (grep or awk)

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By : Jeremy Jenkins

Date : November 28 2020, 08:01 AM

Hope this helps I have a file that looks something like this:

code :

$ cat tst.awk
/^id number/ {
    gsub(/^([^ ]+ ){2}| [^ ]+$/,"",prev)
    printf "(%s, %d)\n", prev, $3
}
{ prev = $0 }

$ awk -f tst.awk file
(Joe Deere, 1)
(Steve Michael Smith, 2)

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Grep matches only of multiple separated strings

By : Torben Scherzer

Date : March 29 2020, 07:55 AM

will be helpful for those in need I have a file with lines containing this format: , Is a sed solution acceptable?

code :

sed 's/^\([^ ]* [^ ]*\).*\(fieldD=[^,]*\).*/\1 \2/' filename

grep using a list to find matches in a file, and print only the first occurrence for each string in the list

By : LightDragooon

Date : March 29 2020, 07:55 AM

I think the issue was by ths following , I have a file, for example, "queries.txt" that has hard return separated strings. I want to use this list to find matches in a second file, "biglist.txt". , If you want to "reset the counter" after each file, you could do

code :

cat queries.txt | xargs -I{} grep -m 1 -w {} biglist.txt > output

cat queries.txt   - produce one "search word" per line
xargs -I{}        - take the input one line at a time, and insert it at {}
grep -m 1 -w      - find only one match of a whole word
{}                - this is where xargs inserts the search term (once per call)
biglist.txt       - the file to be searched
> output          - the file where the result is to be written

How to save the lines of grep matches?

By : Romulo

Date : March 29 2020, 07:55 AM

With these it helps If I understand your question well, you only need the first occurrence of each filename. You can achieve this using awk:

code :

awk '!x[$2]++' file.txt

INPUT  hello.txt
OUTPUT stack.txt
INPUT  overflow.txt
OUTPUT byebye.txt
INPUT  nick.txt
OUTPUT jesus.txt

How to grep exact matches from a file of a list of strings

By : Badri

Date : March 29 2020, 07:55 AM

Hope that helps I have a file A with one column with a list of strings like this: , You can use awk instead:

code :

awk 'FNR==NR{a[$1];next} ($4 in a)' A B
chr13   50571142        50592603        ADAMTS9  21461   +
chr19   50180408        50191707        AIP   11299   +

awk 'FNR==NR{a[$1];next} {for (i=1; i<=NF; i++) if ($i in a) print}' A B

Grep across multiple lines but returning all matches

By : knappetroll

Date : March 29 2020, 07:55 AM

fixed the issue. Will look into that further awk should be able to do what you want. I think perl and sed probably would too for that matter.
Using the -E (extended regex) I believe is making your regex too greedy. As far as why your grep -P is not working, you'll have to use grep --version and grep--help and do some research. Mine is working fine with GNU grep 2.22 on Ubuntu 16.04.

code :

awk 'BEGIN {ln=1; lck="n"; print "---"};
     lck=="y" {print ln")",$0};
     $3=="UNLOCK" {lck="n"; ln++; print "---"; next};
     $3=="LOCK" && lck=="n" {print ln")",$0; lck="y";ln++; next};
     {ln++};
' NEWSJBHQDB12A.log > NEWSJBHQDB12A_filtered.txt;

$ cat file
2302221 Query   LOCK TABLES browse WRITE, browse_being_allocated WRITE
2302221 Query   SELECT id,startAtom,finishAtom FROM browse_being_allocated WHERE poolID = 31543 AND rushID = '32ca680dd0d84f9b9b2945e2186c09ff' AND format = 516 AND startAtom <= 1182716 AND finishAtom > 1182716
2302221 Query   INSERT INTO browse (poolId,atom,skew,format,rushID,start,finish,databytes,srcPoolID,srcAtom,srcSkew,arrived) VALUES (31543,1182716,0,516,'32ca680dd0d84f9b9b2945e2186c09ff',274545,274588,315392,0,0,0,1)
2302221 Query   UPDATE browse_being_allocated SET startAtom = 1182717 WHERE id = 26471948
2302221 Query   UNLOCK TABLES
2334151 Change user user@dbsrv1 on db
2334151 Query   SET NAMES utf8
2334151 Query   SET character_set_results = NULL
2334151 Query   LOCK TABLES browse WRITE, browse_being_allocated WRITE
2302201 Change user user@dbsrv1 on db
2302201 Query   SET NAMES utf8
2302201 Query   SET character_set_results = NULL
2302201 Query   SELECT DISTINCT rushID FROM tags WHERE rushID NOT IN (SELECT DISTINCT rushID FROM essencefragments) GROUP BY rushID 151216 19:00:39
2566722 Quit    
2522564 Query   LOCK TABLES browse WRITE, browse_being_allocated WRITE
2522564 Query   SELECT id,startAtom,finishAtom FROM browse_being_allocated WHERE poolID = 31543 AND rushID = '32ca680dd0d84f9b9b2945e2186c09ff' AND format = 516 AND startAtom <= 1182717 AND finishAtom > 1182717
2522564 Query   INSERT INTO browse (poolId,atom,skew,format,rushID,start,finish,databytes,srcPoolID,srcAtom,srcSkew,arrived) VALUES (31543,1182717,0,516,'32ca680dd0d84f9b9b2945e2186c09ff',274588,274633,331776,0,0,0,1)
2522564 Query   UPDATE browse_being_allocated SET startAtom = 1182718 WHERE id = 26471948
2522564 Query   UNLOCK TABLES

$ awk 'BEGIN {ln=1; lck="n"; print "---"};
     lck=="y" {print ln")",$0};
     $3=="UNLOCK" {lck="n"; ln++; print "---"; next};
     $3=="LOCK" && lck=="n" {print ln")",$0; lck="y";ln++; next};
     {ln++};
' file
---
1)     2302221 Query   LOCK TABLES browse WRITE, browse_being_allocated WRITE
2)     2302221 Query   SELECT id,startAtom,finishAtom FROM browse_being_allocated WHERE poolID = 31543 AND rushID = '32ca680dd0d84f9b9b2945e2186c09ff' AND format = 516 AND startAtom <= 1182716 AND finishAtom > 1182716
3)     2302221 Query   INSERT INTO browse (poolId,atom,skew,format,rushID,start,finish,databytes,srcPoolID,srcAtom,srcSkew,arrived) VALUES (31543,1182716,0,516,'32ca680dd0d84f9b9b2945e2186c09ff',274545,274588,315392,0,0,0,1)
4)     2302221 Query   UPDATE browse_being_allocated SET startAtom = 1182717 WHERE id = 26471948
5)     2302221 Query   UNLOCK TABLES
---
9)     2334151 Query   LOCK TABLES browse WRITE, browse_being_allocated WRITE
10)     2302201 Change user user@dbsrv1 on db
11)     2302201 Query   SET NAMES utf8
12)     2302201 Query   SET character_set_results = NULL
13)     2302201 Query   SELECT DISTINCT rushID FROM tags WHERE rushID NOT IN (SELECT DISTINCT rushID FROM essencefragments) GROUP BY rushID 151216 19:00:39
14)     2566722 Quit    
15)     2522564 Query   LOCK TABLES browse WRITE, browse_being_allocated WRITE
16)     2522564 Query   SELECT id,startAtom,finishAtom FROM browse_being_allocated WHERE poolID = 31543 AND rushID = '32ca680dd0d84f9b9b2945e2186c09ff' AND format = 516 AND startAtom <= 1182717 AND finishAtom > 1182717
17)     2522564 Query   INSERT INTO browse (poolId,atom,skew,format,rushID,start,finish,databytes,srcPoolID,srcAtom,srcSkew,arrived) VALUES (31543,1182717,0,516,'32ca680dd0d84f9b9b2945e2186c09ff',274588,274633,331776,0,0,0,1)
18)     2522564 Query   UPDATE browse_being_allocated SET startAtom = 1182718 WHERE id = 26471948
19)     2522564 Query   UNLOCK TABLES
---

$ cat file 
NO PRINT
NO PRINT
1 Query LOCK
STUFF
STUFF
STUFF
1 Query UNLOCK
NO PRINT
2 Query LOCK
STUFF
2 Query UNLOCK
NO PRINT
NO PRINT
NO PRINT
NO PRINT

$ awk 'BEGIN {ln=1; lck="n"; print "---"};
     lck=="y" {print ln")",$0};
     $3=="UNLOCK" {lck="n"; ln++; print "---"; next};
     $3=="LOCK" && lck=="n" {print ln")",$0; lck="y";ln++; next};
     {ln++};
' file
---
3) 1 Query LOCK
4) STUFF
5) STUFF
6) STUFF
7) 1 Query UNLOCK
---
9) 2 Query LOCK
10) STUFF
11) 2 Query UNLOCK
---