This question already has answers here:
Inner join on two text files
(5 answers)
Closed 5 years ago.
File1 (keywords present in it (after 2nd comma) for picking Ex: GOLD, BRO, ...)
File2 (extraction of lines from here)
File1:
ABC,123,GOLD,20171201,GOLDFUTURE
ABC,467,SILVER,20171201,SILVERFUTURE
ABC,987,BRO,20171201,BROFUTURE
File2:
XYZ,32,RUBY,20171201,RUBY
XYZ,33,GOLD,20171201,GOLD
XYZ,34,CEMENT,20171201,CEMENT
XYZ,35,PILLAR,20171201,pillar
XYZ,36,CNBC,20171201,CNBC
XYZ,37,CBX,20171201,CBX
XYZ,38,BRO,20171201,BRO
I want Linux commands(awk-sed-cat-grep etc) to get output file:
which is:
XYZ,33,GOLD,20171201,GOLD
XYZ,38,BRO,20171201,BRO
I have found commands online:
grep -F -f File1 File2
awk 'FNR==NR {a[$0];next} ($NF in a)' File1 File2
awk 'FNR==NR {a[$0];next} ($0 in a)' File1 File2
diff File1 File2
In the point 3. I am picking up whole lines from File1 for comparison, is there any way to pickup a keyword after comma? Or is there any way to insert File separator in the awk command of point 2.
Could you please try following and let me know if this helps you.
awk -F, 'FNR==NR{a[$3];next} ($3 in a)' File1 File2
Related
I'm trying to combine multiple files to 1 file using cat command.
However I wish to add a separation line like "----" in between the file contents.
Is there a way we can achieve this with cat or any other tool?
cat file1 file2 file3 file4 > newfile
you can use the following command for combining multiple files with --- delimiter.
awk 'FNR==1 && NR!=1 {print "---"}{print}' file1 file2 > newfile
command is copied from this post of Unix stack excahnge
https://unix.stackexchange.com/questions/163782/combine-two-text-files-with-adding-some-separator-between
I want to compare two files and redirect the difference between the two files to third one.
file1:
/opt/a/a.sql
/opt/b/b.sql
/opt/c/c.sql
In case any file has # before /opt/c/c.sql, it should skip #
file2:
/opt/c/c.sql
/opt/a/a.sql
I want to get the difference between the two files. In this case, /opt/b/b.sql should be stored in a different file. Can anyone help me to achieve the above scenarios?
file1
$ cat file1 #both file1 and file2 may contain spaces which are ignored
/opt/a/a.sql
/opt/b/b.sql
/opt/c/c.sql
/opt/h/m.sql
file2
$ cat file2
/opt/c/c.sql
/opt/a/a.sql
Do
awk 'NR==FNR{line[$1];next}
{if(!($1 in line)){if($0!=""){print}}}
' file2 file1 > file3
file3
$ cat file3
/opt/b/b.sql
/opt/h/m.sql
Notes:
The order of files passed to awk is important here, pass the file to check - file2 here - first followed by the master file -file1.
Check awk documentation to understand what is done here.
You can use some tools like cat, sed, sort and uniq.
The main observation is this: if the line is in both files then it is not unique in cat file1 file2.
Furthermore in cat file1 file2| sort, all doubles are in sequence. Using uniq -u we get unique lines and have this pipe:
cat file1 file2 | sort | uniq -u
Using sed to remove leading whitespace, empty and comment lines, we get this final pipe:
cat file1 file2 | sed -r 's/^[ \t]+//; /^#/ d; /^$/ d;' | sort | uniq -u > file3
as you can read in the title Im dealing with two files. Her is the example how the look like.
file1:
Name (additional info separated by a tab from the name)
Peter Schwarzer<tab>Best friend of mine
file2:
Name (followed by a float separated by a tab from the name)
Peter Schwarzer<tab>1456
So what i want to do is use file1 one as an index for searching file2. If the Names match it should be written in file3 which should contain the Name followed by the float from file2 followed by the additional info from file1.
So file3 should look like:
Peter Schwarzer<tab>1456<tab>Best friend of mine
(everything separated by tab)
I tried grep -f to read a pattern from a file and without the additional information it works. So is there any way to get the desired result with grep or is AWK the answer?
Thanks in advance,
Julian
give this line a try, I didn't test, but should go:
awk -F'\t' -v OFS="\t" 'NR==FNR{n[$1]=$2;next}$1 in n{print $0,n[$1]}' file1 file2 > file3
Try this awk one liner!
awk -v FS="\t" -v OFS="\t" 'FNR==NR{ A[$1]=$2; next}$1 in A{print $0,A[$1];}' file1.txt file2.txt > file3.txt
To me this looks like a job for join:
join -t '\t' file1 file2
This assumes file1 and file2 are sorted. If not, sort them first:
sort -o file1 file1
sort -o file2 file2
join -t '\t' file1 file2
If you can't modify file1 and file2 (if you need to leave them in their original, unsorted state), use a temporary file:
tmpfile=/tmp/tf$$
sort file1 > $tmpfile
sort file2 | join -t '\t' $tmpfile -
If join says "illegal tab character specification" you'll have to use join -t ' ' where you type an actual tab between the single quotes (and depending on your shell, you may have to use control-V before that tab).
Say we have file1.csv like this
"agvsad",314
"gregerg",413
"dfwer",53214
"fewf",344
and file2.csv like this
"dfwer"
"fewf"
how to use awk to delete those lines whose column 1 values exist in file2 and get a file3 looks like:
"agvsad",314
"gregerg",413
By the way I am dealing with millions of lines
awk 'NR==FNR{seen[$0]++; next} !seen[$1]' file2.csv FS=, file1.csv should do what you want but it will require enough memory to store an entry for each line in file2.csv.
As an alternative, using grep:
$ grep -vf file2.csv file1.csv
"agvsad",314
"gregerg",413
This question already has answers here:
Find the similarities between two files
(2 answers)
Closed 8 years ago.
I have a file file1 and File2. I want to compare file1 with file2 and generate a file3 which contains the lines in file2 which are present in file1.
You may try this:-
awk 'FNR==NR{a[$0];next} ($0 in a)' file2 file1
Use grep
$ grep -w -f file1 file2
-f is used to tell grep to obtain parameters from a file.
-w matches whole words.
EDIT:-
You may try this:
fgrep -x -f file2 -v file1
-x match whole line
-f is used to tell grep to obtain parameters from a file.
-v inverts results