Suppose there is one file.txt in which below content text is written:
ABC/xyz
ABC/xyz/rst
EFG/ghi
I need to write a shell script that can extract the first unique word before the first /.
So as output, I want ABC and EFG to be written in one file.
You can extract the first word with cut (slash as delimiter), then pipe to sort with the -u (for "unique") option:
$ cut -d '/' -f 1 file.txt | sort -u
ABC
EFG
To get the output into a file, just redirect by appending > filename to the command. (Or pipe to tee filename to see the output and get it in a file.)
Try this :
cat file.txt | tr -s "/" ' ' | awk -F " " '{print $1}' | sort | uniq > outfile.txt
Another interesting variation:
awk -F'/' '{print $1 |" sort -u" }' file.txt > outfile.txt
Not that it matters here, but being able to pipe and redirect within awk can be very handy.
Another easy way:
cut -d"/" -f1 file.txt|uniq > out.txt
You can use a mix of cut and sort like so:
cut -d '/' -f 1 file.txt | sort -u > newfile.txt
The first line grabs any string until a slash / and outputs it into newfile.txt.
The second line sorts the text, removing any duplicate strings you might have.
Related
I have a txt file containing multiple lines of text, for example:
This is a
file containing several
lines of text.
Now I have another file containing just words, like so:
this
contains
containing
text
Now I want to output the words which are in file 1, but not in file 2. I have tried the following:
cat file_1.txt | xargs -n1 | tr -d '[:punct:]' | sort | uniq | comm -i23 - file_2.txt
xargs -n1 to put each space separated substring on a newline.
tr -d '[:punct:] to remove punctuations
sort and uniq to make a sorted file to use with comm which is used with the -i flag to make it case insensitive.
But somehow this doesn't work. I've looked around online and found similar questions, however, I wasn't able to figure out what I was doing wrong. Most answers to those questions were working with 2 files which were already sorted, stripped of newlines, spaces, and punctuation while my file_1 may contain any of those at the start.
Desired output:
is
a
file
several
lines
of
paste + grep approach:
grep -Eiv "($(paste -sd'|' <file2.txt))" <(grep -wo '\w*' file1.txt)
The output:
is
a
file
several
lines
of
I would try something more direct:
for A in `cat file1 | tr -d '[:punct:]'`; do grep -wq $A file2 || echo $A; done
flags used for grep: q for quiet (don't need output), w for word match
One in awk:
$ awk -F"[^A-Za-z]+" ' # anything but a letter is a field delimiter
NR==FNR { # process the word list
a[tolower($0)]
next
}
{
for(i=1;i<=NF;i++) # loop all fields
if(!(tolower($i) in a)) # if word was not in the word list
print $i # print it. duplicates are printed also.
}' another_file txt_file
Output:
is
a
file
several
lines
of
grep:
$ grep -vwi -f another_file <(cat txt_file | tr -s -c '[a-zA-Z]' '\n')
is
a
file
several
lines
of
This pipeline will take the original file, replace spaces with newlines, convert to lowercase, then use grep to filter (-v) full words (-w) case insensitive (-i) using the lines in the given file (-f file2):
cat file1 | tr ' ' '\n' | tr '[:upper:]' '[:lower:]' | grep -vwif file2
Situation
I have many URLs in a file, and I need to find out how many unique URLs exist.
I would like to run either a bash script or a command.
myfile.log
/home/myfiles/www/wp-content/als/xm-sf0ab5df9c1262f2130a9b313192deca4-f0ab5df9c1262f2130a9b313192deca4-c23c5fbca96e8d641d148bac41017635|https://public.rgfl.org/HS/PowerPoint%20Presentations/Health%20and%20Safety%20Law.ppt,18,17
/home/myfiles/www/wp-content/als/xm-s4bf050d47df5bfaf0486a50a8528cb16-4bf050d47df5bfaf0486a50a8528cb16-c23c5fbca96e8d641d148bac41017635|https://public.rgfl.org/HS/PowerPoint%20Presentations/Health%20and%20Safety%20Law.ppt,15,14
/home/myfiles/www/wp-content/als/xm-sad122bf22152ba4823a520cc2fe59f40-ad122bf22152ba4823a520cc2fe59f40-c23c5fbca96e8d641d148bac41017635|https://public.rgfl.org/HS/PowerPoint%20Presentations/Health%20and%20Safety%20Law.ppt,17,16
/home/myfiles/www/wp-content/als/xm-s3c0f031eebceb0fd5c4334ecef15292d-3c0f031eebceb0fd5c4334ecef15292d-c23c5fbca96e8d641d148bac41017635|https://public.rgfl.org/HS/PowerPoint%20Presentations/Health%20and%20Safety%20Law.ppt,12,11
/home/myfiles/www/wp-content/als/xm-sff661e8c3b4f94957926d5434d0ad549-ff661e8c3b4f94957926d5434d0ad549-c23c5fbca96e8d641d148bac41017635|https://quality.gha.org/Portals/2/documents/HEN/Meetings/nursesinstitute/062013/nursesroleineliminatingharm_moddydunning.pptx,17,16
/home/myfiles/www/wp-content/als/xm-s32c41ec2a5440ad220008b9abfe9add2-32c41ec2a5440ad220008b9abfe9add2-c23c5fbca96e8d641d148bac41017635|https://quality.gha.org/Portals/2/documents/HEN/Meetings/nursesinstitute/062013/nursesroleineliminatingharm_moddydunning.pptx,19,18
/home/myfiles/www/wp-content/als/xm-s28787ca2f4372ddb3616d3fd53c161ab-28787ca2f4372ddb3616d3fd53c161ab-c23c5fbca96e8d641d148bac41017635|https://quality.gha.org/Portals/2/documents/HEN/Meetings/nursesinstitute/062013/nursesroleineliminatingharm_moddydunning.pptx,22,21
/home/myfiles/www/wp-content/als/xm-s89a7b68158e38391da9f0de1e636c0d5-89a7b68158e38391da9f0de1e636c0d5-c23c5fbca96e8d641d148bac41017635|https://quality.gha.org/Portals/2/documents/HEN/Meetings/nursesinstitute/062013/nursesroleineliminatingharm_moddydunning.pptx,13,12
/home/myfiles/www/wp-content/als/xm-sc4b14e10f6151995f21334061ff1d139-c4b14e10f6151995f21334061ff1d139-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hy-wire-car-2.pptx,13,12
/home/myfiles/www/wp-content/als/xm-se589d47d163e43fa0c0d68e824e2c286-e589d47d163e43fa0c0d68e824e2c286-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hy-wire-car-2.pptx,19,18
/home/myfiles/www/wp-content/als/xm-s52f897a623c539d09bfb988bfb153888-52f897a623c539d09bfb988bfb153888-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hy-wire-car-2.pptx,14,13
/home/myfiles/www/wp-content/als/xm-sccf27a904c5b88e96a3522b2e1180fed-ccf27a904c5b88e96a3522b2e1180fed-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hy-wire-car-2.pptx,18,17
/home/myfiles/www/wp-content/als/xm-s6874bf9d589708764dab754e5af06ddf-6874bf9d589708764dab754e5af06ddf-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hy-wire-car-2.pptx,17,16
/home/myfiles/www/wp-content/als/xm-s46c55ec8387dbdedd7a83b3ad541cdc1-46c55ec8387dbdedd7a83b3ad541cdc1-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hy-wire-car-2.pptx,19,18
/home/myfiles/www/wp-content/als/xm-s08cfdc15f5935b947bbaa93c7193d496-08cfdc15f5935b947bbaa93c7193d496-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hydro-power-plant.ppt,9,8
/home/myfiles/www/wp-content/als/xm-s86e267bd359c12de262c0279cee0c941-86e267bd359c12de262c0279cee0c941-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hydro-power-plant.ppt,15,14
/home/myfiles/www/wp-content/als/xm-s5aa60354d134b87842918d760ec8bc30-5aa60354d134b87842918d760ec8bc30-c23c5fbca96e8d641d148bac41017635|https://royalmechanical.files.wordpress.com/2011/06/hydro-power-plant.ppt,14,13
Desired Result:
Unique Urls: 4
cut -d "|" -f 2 file | cut -d "," -f 1 | sort -u | wc -l
Output:
4
See: man cut, man sort
An awk solution would be
awk '{sub(/^[^|]*\|/,"");gsub(/,[^,]*/,"");i+=a[$0]++?0:1}END{print i}' file
4
If you happen to use GNU awk then below would also give you the same result
awk '{i+=a[gensub(/.*(http[^,]*).*/,"\\1",1)]++?0:1}END{print i}' file
4
Or even short as pointed out in this cracker comment by #cyrus
awk -F '[|,]' '{i+=!a[$2]++} END{print i}' file
4
which uses awk multiple field separator functionality with more idiomatic awk.
Note: See the [ awk manual ] for more info.
Parse with sed, and since file appears to be already sorted,
(with respect to URLs), just run uniq, and count it:
echo Unique URLs: $(sed 's/^.*|\([^,]*\),.*$/\1/' file | uniq | wc -l)
Use GNU grep to extract URLs:
echo Unique URLs: $(grep -o 'ht[^|,]*' file | uniq | wc -l)
Output (either method):
Unique URLs: 4
tr , '|' < myfile.log | sort -u -t '|' -k 2,2 | wc -l
tr , '|' < myfile.log translates all commas into pipe characters
sort -u -t '|' -k 2,2 sorts unique (-u), pipe delimited (-t '|'), in the second field only (-k 2,2)
wc -l counts the unique lines
I have a file called "list.txt" which contains the following rows of numbers.
31056780
31909020
31092320
61093190
61094592
45090280
45902902
I need to now take all the rows starting with "31" and store them in another file call file31.txt take all the rows starting with "61" and store them in file61.txt, take all rows starting with "45" store it in file45.txt
file31.txt will contain.
31056780
31909020
31092320
file61.txt will contain.
61093190
61094592
file45.txt will contain.
45090280
45902902
I tried this command for all 3 but it does not do what i want it to do.
awk -F\" '/31*/ {print $0}' list.txt > file31
awk -F\" '/61*/ {print $0}' list.txt > file61
awk -F\" '/45*/ {print $0}' list.txt > file45
You can use output redirection inside a single awk script. It can construct the filename by concatenating the first two characters of the line.
awk '{ fn = "list" substr($0, 1, 2) ".txt"; print > fn }' list.txt
You could use grep or sed to filter the lines with a matching pattern, for example:
sed '/^31/!d' list.txt > list31.txt
Or in a for loop for every number you want:
for n in "31" "45" "61"; do sed '/^'"$n"'/!d' list.txt > list$n.txt; done
Hope it helps.
You can use:
awk '/^31/{print > "file31"} /^45/{print > "file45"} /^61/{print > "file61"}' file
for i in `cat list.txt | cut -c1-2 | uniq`; do cat list.txt | grep -P ^${i} > file${i}.txt; done
This command works fine and is generic enough to work for all cases.
Now let's understand how it works.
cat list.txt | cut -c1-2 | uniq
31
45
61
Next we loop over these unique identifiers to create the new files using
cat list.txt | grep -P ^${i}
grep -P finds strings with partial match - here ^ - means that we are looking at this partial string only at the beginning of the line.
I want to get only one word from this txt file: http://pastebin.com/jFDu0Le5 . The word is from last row: WER: 45.67% Correct: 65.87% Acc: 54.33%
I want to get only the value: 45.67 to save it to the file value.txt..I want to create BASH script to get this value. Can you give me an example how to do it??? I am new in Bash and I need it for school. The whole .txt file is saved on my server as text file file.txt.
Try this:
grep WER file.txt | awk '{print $2}' | uniq | sed -e 's/%//' > value.txt
Note that this will overwrite value.txt each time you run the command.
You want grep "WER:" value.txt | cut -???
I have ??? because I do not know the structure of the file. Tab delimited? Fixed Width?
Do man cut an you can get the arguments you need.
There a many ways and instruments to do the task:
sed
tac file.txt | sed -n '/^WER: /{s///;s/%.*//;p;q}' > value.txt
awk
tac file.txt | awk -F'[ %]' '/^WER:/{print $2;exit}' > value.txt
bash
while read a b c
do
if [ $a = "WER:" ]
then
b=${b%\%*}
echo ${b#* }
break
fi
done < <(tac file.txt) > value.txt
If the format is as you said, then this also works
awk -F'[: %]' '/^WER/{print $3}' file.txt > value.txt
Explanation
-F specifies the field separator as one of [: %]
/<PATTERN>/ {<ACTION>} refers to: if a line matches some PATTERN, then do some ACTION
in my case,
the PATTERN is: starts with ^ the string WER
the ACTION is: print field $3 (as split by the -F field separators)
> sends the output to value.txt
I'd like to format the output of cat myFile.txt in the form of:
app1=19
app2=7
app3=20
app4=19
Using some combination of piping output through various commands.
What would be easiest way to achieve this?
I've tried using cut -f2 but this does not change the output, which is odd.
Here is the basic command/file output:
[user#hostname ~]$ cat myFile.txt
1402483560882 app1 19
1402483560882 app2 7
1402483560882 app3 20
1402483560882 app4 19
Basing from your input:
awk '{ print $2 "=" $3 }' myFile
Output
app1=19
app2=7
app3=20
app4=19
Another solution, using sed and cut:
cat myFile.txt | sed 's/ \+/=/gp' | cut -f 3- -d '='
Or using tr and cut:
cat myFile.txt | tr -s ' ' '=' | cut -f 3- -d '='
You could try this sed oneliner also,
$ sed 's/^\s*[^ ]*\s\([^ ]*\)\s*\(.*\)$/\1=\2/g' file
app1=19
app2=7
app3=20
app4=19