linux basic commands

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• 👉 fdupes – A Command Line Tool to Find and Delete Duplicate Files in Linux

• 💻 (Resolved) Please install all available updates for your release before upgrading

  cd /etc/apt/sources.list.d 
  for i in *.list; do sudo mv ${i} ${i}.disabled; done
  

• How to make tree output only directories

  tree -d
  tree -d <target_directory>
  tree -d -L 2 .
  tree -d -L 3 home/downloads/
  

• 👉 Commands to find disk usage of files and directories

  du -h downloads/
  du -ah downloads/
  du -mh downloads/
  du -mh --max-depth=1 downloads/
  find . -type f -exec du --human {} + | sort --human
  find . -type f -exec du --human {} + | sort --human --reverse
  find . -type f -exec du --human {} + | sort --human --reverse | head
  

• 👉 Sorted output for du -h Commands to find disk usage cyberciti.biz

  du -mh --max-depth=1 downloads/ | sort -h
  du -mh --max-depth=1 downloads/ | sort -h -r
  du --human-readable --max-depth=1 downloads/ | sort --human-numeric-sort -r
  du -h | sort -h | head
  du -h | sort -hr | head
  du --human-readable | sort --human-numeric-sort | head
  du --human-readable | sort --human-numeric-sort -r | head
  

• 👉 Merge two pdf files side by side in a command line here
• Joining PDFs with Linux command line by Judith Roth

  pdfunite *.pdf output.pdf
  sudo apt install texlive-extra-utils
  

• 👉 Split files, note the naming scheme

  pdfseparate File1.pdf temp-%04d-file1.pdf
  pdfseparate File2.pdf temp-%04d-file2.pdf
  

• 👉 Combine the final pdf

  pdfjam temp-*-*.pdf --nup 2x1 --landscape --outfile File1+2.pdf
  pdfjam temp-*-*.pdf --nup 3x2 --delta '{-20mm 0mm}' --landscape --outfile File1+2.pdf
  pdfjam temp-*-*.pdf --nup 3x2 --paper 'a0paper' --delta '{-80mm 0mm}' --landscape --outfile File1+2.pdf
  

• 👉 Adding WaterMarks to pdf here and here

  pdftk survivor.pdf background watermark.pdf output survivor_watermarked.pdf
  pdftk original.pdf stamp watermark.pdf output final.pdf
  

• How to reverse the page order of a PDF file unix

  qpdf --empty --pages infile.pdf z-1 -- outfile.pdf
  

• Displace Days and time for history command here and here

  echo 'HISTTIMEFORMAT="%F %T "' >> ~/.bashrc
  

• 👉 /etc/apt/sources.list

Example of /etc/apt/sources.list Ubuntu 18.04 here

• 👉 Some useful commands Copying a Directory with SCP and here

rsync -avz <path to files to copy files from> <path to copy files to>
scp <path to files to copy files from> <path to copy files to>

head filename
cat filename
tail filename

• 10 Useful du (Disk Usage) Commands to Find Disk Usage of Files and Directories here

• How To Clear Shell History In Ubuntu Linux here

• Manage files effectively using head, tail and cat commands in Linux here

• searching a word or a variable using grep command

  grep -r "n_ice_group" *
  grep -r "1.35634" *
  

• Installing Ubuntu from a USB Drive: A Comprehensive Guide

• How to rename multiple files on Linux here

  mmv "*Log_Likelihood_direction_*" "#1Log_Likelihood_direction_scan_event_11_#2"
  

• Bash Scripting Tutorial for Beginners here

• Dumping the output file in a

  python file >> output.txt
  

👉 How to submit interactive job on many file

condor_submit -interactive -a request_gpus=1
eval $(/cvmfs/icecube.opensciencegrid.org/py3-v4.1.1/setup.sh)
/data/p-one/twagiray/trackreco/build/env-shell.sh
cd /data/p-one/twagiray/reco_track_baseline/llh_scan

run_job.sh
#!/bin/bash
pyfile=PATH/python_file.py
gcd=PATH/gcd_file.i3.gz
infile=PATH/i3file_*.i3.gz
outfile=PATH
for file in $infile
do
	python $pyfile -g $gcd -i $file -o $outfile/name.i3.gz
done

bash run_job.sh >> outfile.txt