file-manipulation.sh

#!/usr/bin/env bash
set -e

# rm file
find . -name 'file.json' -exec rm {} \;

# replace strings in file
sed -i '' 's|find|replace|g' filename

# Remove line from file
sed -i '' '|deletestr|d' file

# delete string in certain extension files
find root_path -name '*.rs' -exec sed -i '' 's|find|d' {} \;

# send something to two files
echo 2-file-string | tee -a
  file1 \
  file2

# output multiple lines to file
printf "\
lots of info 
pre formatted
can go here
" | cat > file1

# replace string in certain extension files
find root_path -name '*.rs' -exec sed -i '' 's|find|replace|g' {} \;

# check for string in file before replacing it
if grep -q SomeString "$File"; then
  Some Actions # SomeString was found
fi

# check if file exists
FILE="/etc/passwd"
if [ -f $FILE ]; then
    echo "$FILE exists"
else
    echo "$FILE doesn't exist"
fi

# Increment number while replacing
gsed -r 's/(.*)(cache_version=)([0-9]+)(.*)/echo "\1\2$((\3+1))\4"/ge' test

# check if command exists
if ! command -v COMMAND &> /dev/null
then
    echo "COMMAND could not be found"
    exit
fi

# Remove files that have text
find -iname "*.txt" | xargs grep -l "Wij willen graag weten in welke omgeving" | awk '{print "rm "$1}' | bash

# Create symlinks to all executables
rm *; fd -t x . ../ -x ln -s {}

# Convert fish function to zsh/bash alias
cat aws.fish | sed 's|function|alias|g' | sed 's| -w "[^"]*"; |="|g' | sed 's|$argv|\\"$@\\"|g' | sed 's|; end|"|g' > aws.zsh