File handling utilities

fileHandling.bash

#!/bin/bash

# replaces the $x variable
# e.g replaceVariable first_locked 7777 ~/.bashrc 
# will replace any export first_locked=* with export first_locked=7777 directly in ~/.bashrc
# and then proceed to source the script if it is an rc file
function replaceVariableInFile {
  sed -i -e "s/^export\ $1=.*/export\ $1=$2/g" $3
  # matches .bashrc and .zshrc files
  if [[ "$3" =~ .*"rc" ]]; then
    source $3 && echo "Sourced $3 file"
  fi
}

# check if a variable export is in a file
# e.g checkOrIncludeVariable lastActive ~/.bashrc 
# will check if there is a line "export lastActive=..."
# if there is none it will append a line "export lastActive=0" and source the file
function checkOrIncludeVariable {
  grep -q "^export\ $1=.*" $2 || echo "export $1=0" >> $2
  source $2
}