Spared commands

comands.sh

netstat -tulpn
netstat -polenta
#ask for www.foo.baz
dig +short www.foo.baz
#ask at  208.67.222.222 for foo.baz MX
dig @208.67.222.222 foo.baz MX
ps axfww
tcpdump -n -S -s 0 -A 'tcp dst port 80' and src 172.31.4.7
# kill by port
PORT=3030
kill $(lsof -t -ni:$PORT)


echo "${{secrets.DEPLOY_KEY}}" > deploy_key &&
chmod 600 ./deploy_key && 
rsync -chav --delete \
  -e 'ssh -i ./deploy_key -o StrictHostKeyChecking=no' \
  --exclude /.git/ \
  --exclude /.github/ \
  --exclude /node_modules/ \
  ./ ${{env.dest}}
  
  # https://mysteries.wizardzines.com/
  strace -tt -T -f -p $(pgrep python)
  sudo tcpdump -n -i any port 53 #(port 53, considering to add -A for more info)

fd.sh

# https://medium.com/@GroundControl/better-git-diffs-with-fzf-89083739a9cb
# $@ all the parameters of git diff
# -1 the current file

fd() {
  preview="git diff $@ --color=always -- {-1}"
  git diff $@ --name-only | fzf -m --ansi --preview $preview
}

renamer.sh

#!/bin/bash

FILES="${1:-./logs}"

# s~
#   \([^c_]*\)            <- match and group all that not contain 'c_'
#   c_a                   <- followed by 'c_'
#   \([a-z0-9_]\+\.csv\)$ <- match and group all that match 1 or more char or digit or _ followed by '.csv'
# ~
#   \1\2                  <- substiture with first match ie: ./logs/2019/1/ and second match ie: delete_3_2019.csv
# ~
for file in $(find $FILES -type f -name "*csv"); do
  newfile="$(echo $file | sed 's~\([^c_]*\)c_\([a-z0-9_]\+\.csv\)$~\1\2~')"
  cp --verbose $file $newfile
  rm $file
done

sed.sh

 # considering an foo.txt with this content
        "./fixtures/good/CATALOG-1701.json",
        "./fixtures/good/CATALOG-1711.json",
        "./fixtures/good/CATALOG-1716.json",
        "./fixtures/good/CATALOG-1721.json",
        "./fixtures/good/CATALOG-1726.json",
        "./fixtures/good/CATALOG-1731.json",
 # text quote estraction example
cat foo.txt | sed  's/^[^"]*"\([^"]*\)",/\1/g'
# start from beginning to first double quote, then capture te rest exluding double quote

trace.sh

https://jvns.ca/blog/2021/11/15/esbuild-vue/
and saw which files it opened, like this: (you have to scroll right to see the filenames)

$ strace -e openat -f  esbuild blah.js  --bundle --outfile=/dev/null
openat(AT_FDCWD, "/home/bork/work/mess-with-dns/frontend/package.json", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/home/bork/work/mess-with-dns/frontend/blah.js", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/home/bork/work/mess-with-dns/frontend/node_modules/vue/package.json", O_RDONLY|O_CLOEXEC) = 3
openat(AT_FDCWD, "/home/bork/work/mess-with-dns/frontend/node_modules/vue/dist/vue.runtime.esm.js", O_RDONLY|O_CLOEXEC) = 3

zbookmarks.bash

diff <(sed -n 's/.*href="\([^"]*\).*/\1/pI' a.html | sed 's/\&amp;/\&/g' | sort) <(sed -n 's/.*href="\([^"]*\).*/\1/pI' b.html | sed 's/\&amp;/\&/g' | sort)