Bash Commands & tricks

Bash_commands_etc.sh

###### ~/.bash_profile ######

alias a='vim ~/.bash_profile && source ~/.bash_profile'
alias gpp='git pull && git push'

# FIND PROCESS
function p(){
  ps aux | grep -i $1 | grep -v grep
}

# KILL ALL
function ka(){
  cnt=$( p $1 | wc -l)
  echo -e "\nSearching for '$1' -- Found" $cnt "Running Processes .. "
  p $1
  echo -e '\nTerminating' $cnt 'processes .. '
  ps aux  |  grep -i  $1 |  grep -v grep   | awk '{print $2}' | xargs sudo kill -9
  echo -e "Done!\n"
  echo "Running search again:"
  p "$1"
  echo -e "\n"
}

# http://bitmote.com/index.php?post/2012/11/19/Using-ANSI-Color-Codes-to-Colorize-Your-Bash-Prompt-on-Linux
# http://misc.flogisoft.com/bash/tip_colors_and_formatting

#
# This file echoes a bunch of color codes to the terminal to demonstrate
# what's available. Each line is the color code of one forground color,
# out of 17 (default + 16 escapes), followed by a test use of that color
# on all nine background colors (default + 8 escapes).
#

function ansi(){

echo -e "\nThis file echoes a bunch of color codes to the terminal to demonstrate \nwhat's available. Each line is the color code of one forground color, \nout of 17 (default + 16 escapes), followed by a test use of that color \non all nine background colors (default + 8 escapes)."

echo -e "\nIf that makes no sense, just concentrate on which numbers to use. \nFont color makes use of 30 to 37. \nBackground color makes use of 40 to 47. \nA 0 (or no value given) for the font color resets it to the default, which depends on the setup. For additional rendering options, 1 sets the font to bright / bold, 4 sets it to underlined, 7 sets it to negative colors."

T='gYw'   # The test text
echo -e "\n                 40m     41m     42m     43m     44m     45m     46m     47m";
for FGs in '    m' '   1m' '  30m' '1;30m' '  31m' '1;31m' '  32m' '1;32m' '  33m' '1;33m' '  34m' '1;34m' '  35m' '1;35m' '  36m' '1;36m' '  37m' '1;37m';
  do FG=${FGs// /}
  echo -en " $FGs \033[$FG  $T  "
  for BG in 40m 41m 42m 43m 44m 45m 46m 47m;
    do echo -en "$EINS \033[$FG\033[$BG  $T \033[0m\033[$BG \033[0m";
  done
  echo;
done
echo

}

#
# generates an 8 bit color table (256 colors) for
# reference purposes, using the \033[48;5;${val}m
# ANSI CSI+SGR (see "ANSI Code" on Wikipedia)
#

function 8bit(){

  echo -e "\n" "8 bit color table (256 colors) for reference purposes, using the " '\\033[48;5;${val}m'  " ANSI CSI+SGR (see "ANSI Code" on Wikipedia)"  "\n"

  echo -en "\n   +  "
  for i in {0..35}; do
    printf "%2b " $i
  done

  printf "\n\n %3b  " 0
  for i in {0..15}; do
    echo -en "\033[48;5;${i}m  \033[m "
  done

  #for i in 16 52 88 124 160 196 232; do
  for i in {0..6}; do
    let "i = i*36 +16"
    printf "\n\n %3b  " $i
    for j in {0..35}; do
      let "val = i+j"
      echo -en "\033[48;5;${val}m  \033[m "
    done
  done

  echo -e "\n"

}

##########################################
###### download a sequence of urls: ######
 curl -o "ditm_#1.png" "http://babel.hathitrust.org/cgi/imgsrv/image?id=mdp.39015063939071;seq=[1-255]"
        -o "ditm_#1.png"    <-- rename to this format, #1 indicates the number
        [1-255]             <-- indicates the numeric sequence
        [00-20]             <-- leading zeros

##################
###### Find ######
    
    #SEARCH & REPLACE IN MULTIPLE FILES
    find . -exec sed -i "s/Anthony Fernando/John Doe/g" {} \;

##################
###### SSH ######
    
    #CREATING A BRIDGE / TUNNEL SETUP
    Host bridge
        HostName *.*.*.*
        IdentityFile ~/.ssh/bridge.pem
        User ec2-user
        Port 443
    
    Host b-osiris
        HostName *.*.*.*
        User root
        ProxyCommand ssh bridge nc %h %p 2> /dev/null