Shantanu's Blog

Database Consultant

October 04, 2024

 

awk Case Study - 13

I have 2 text files. corpus file is the collection of words and exclude file has all the suffixes. I need to extract the stemmed words after removing all suffixes.

==> exclude.txt <==
works
ed
s
ing
ings

==> corpus.txt <==
worked
working
works
tested
tests
find
found
workings

awk -f tst.awk exclude.txt corpus.txt | sort

unmatched find
unmatched found
matched working/s
matched work/ed,ing,s,ings
matched test/ed,s

And the awk script will look something like this...

$ cat tst.awk
{ lineLgth = length($0) }
NR == FNR {
    suffixes[$0]
    sfxLgths[lineLgth]
    next
}
{
    base = ""
    for ( sfxLgth in sfxLgths ) {
        baseLgth = lineLgth - sfxLgth
        if ( baseLgth > 0 ) {
            sfx = substr($0,baseLgth+1)
            if ( sfx in suffixes ) {
                base = substr($0,1,baseLgth)
                bases2sfxs[base] = bases2sfxs[base] "," sfx
            }
        }
    }
    if ( base == "" ) {
        print "unmatched", $0
    }
}
END {
    for ( base in bases2sfxs ) {
        sub(/,/,"/",bases2sfxs[base])
        print "matched", base bases2sfxs[base]
    }
}

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September 28, 2024

 

Firefox and Libreoffice in your browser

Kasm VNC is a modern open source VNC server.

Quickly connect to your Linux server's desktop from any web browser.
No client software install required.

1) Firefox using VNC

docker run -d \
--name=firefox \
-e PUID=1000 \
-e PGID=1000 \
-e TZ=Etc/UTC \
-p 3000:3000 \
-p 3001:3001 \
-v /path/to/config2:/config \
--shm-size="1gb" \
--restart unless-stopped \
lscr.io/linuxserver/firefox:latest

2) Libreoffice using VNC

docker run -d \
  --name=libreoffice \
  --security-opt seccomp=unconfined `#optional` \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -p 3000:3000 \
  -p 3001:3001 \
  -v /path/to/config:/config \
  --restart unless-stopped \
  lscr.io/linuxserver/libreoffice:latest

Labels: , , , , ,


September 24, 2024

 

export to pdf using linux command

You can generate a "pdf" file from Libreoffice writer "odt" file.

File - Export as PDF option is available only if you are using GUI
Here is how to convert to pdf using command line.

# vi Dockerfile
FROM ubuntu:latest

RUN apt-get update && \
    apt-get install -y libreoffice

WORKDIR /workspace

ENTRYPOINT ["libreoffice", "--headless", "--convert-to", "pdf"]

# docker build -t shantanuo/libreoffice-converter .

run the docker command to convert a file to pdf
# docker run --rm -v .:/workspace shantanuo/libreoffice-converter /workspace/pm_in_paris.odt --outdir /workspace

_____

Use this dockerfile if you need to apply a template before creating a PDF file.

FROM ubuntu:latest

RUN apt-get update && apt-get install -y libreoffice python3 python3-venv
RUN python3 -m venv /workspace/venv
RUN /workspace/venv/bin/pip install --upgrade pip
RUN /workspace/venv/bin/pip install unotools

COPY * /workspace/
WORKDIR /workspace

# Start LibreOffice in headless mode in the background and run the Python script after it is started
ENTRYPOINT soffice --headless --accept="pipe,name=libreoffice;urp;StarOffice.ComponentContext" & \
    sleep 5 && \
    python3 /workspace/updated3.py /workspace/ra.txt /workspace/prajakta.ott

I can create an image and it converts the text file to PDF correctly.

docker build -t shantanuo/libreoffice-converter .

The raw text file and template is available in current directory. The generated PDF is also available in the same place after running this command:

docker run -v .:/workspace/ --rm  shantanuo/libreoffice-converter

The python code to apply the template and create pdf is available here...

https://gist.github.com/shantanuo/f635bbdb764d1fafa8587203d7f8823a

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September 08, 2024

 

awk Case Study - 12

Select the first column from the csv file and remove "www". In sql the command ill look something like this...

select replace(column1, 'www', '') from tbl

# cat logs.csv
Origin,Status,Title,ContentType,IP,Country,City,PhoneCode
https://gnu.org,OK,The GNU Operating System and the Free Software Movement,text/html,209.51.188.116,United States,Boston,+1
https://0t1.me,OK,ZeroToOne - Home,text/html,104.21.84.218,Canada,Toronto,+1

# cat myak.txt
#!/usr/bin/awk -f
BEGIN {
  FS = ","
  OFS = ""
}

function normalize_origin(origin) {
  sub(/www./, "", origin) # remove www from the origin.
  return origin
}

{
  # Ignore the header line.
  if(NR == 1) {
    next
  }

  origin = normalize_origin($1)
  print origin
}

# awk -f myak.txt < logs.csv
https://gnu.org
https://0t1.me

https://0t1.me/blog/2024/09/01/practical-awk/

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August 27, 2024

 

Sanskrit-English translation corpus

Itihāsa is a Sanskrit-English translation corpus containing 93,000 Sanskrit shlokas and their English translations extracted from M. N. Dutt's seminal works on The Rāmāyana and The Mahābhārata. 

https://github.com/rahular/itihasa

Itihāsa can be used directly from Huggingface Datasets:

from datasets import load_dataset
dataset = load_dataset("rahular/itihasa")
dataset['train'][0]

{'translation': {'en': 'The ascetic Vālmīki asked Nārada, the best of sages and foremost of those conversant with words, ever engaged in austerities and Vedic studies.',  'sn': 'ॐ तपः स्वाध्यायनिरतं तपस्वी वाग्विदां वरम्। नारदं परिपप्रच्छ वाल्मीकिर्मुनिपुङ्गवम्॥'}}

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