hebertluiz

target_host='google.com'
interval=2

printf '\nWaiting for host %s' "${target_host}"
while true; do 
  if ping -c 2 -i .1 -W .5 ${target_host} > /dev/null; then
    printf '\rHost is %s up. Time to continue' "${target_host}"
    break
  fi
  

hebertluiz

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

hebertluiz

#!/bin/bash


###### Variables
httpd_config='/etc/httpd'
PASSWD_FILE="/etc/httpd/passwd/${PASSWD_FILE:-passwords}"
httpd_home='/var/www/html'
programname="$(basename -- "$0")"
INDEX='-Indexes'

hebertluiz

#!/bin/bash

infile="$*"
if [ -n "$infile" ]
then
    if [ -f "$infile" -a -r $infile ]  
    then
        sed -e 's/[,;]\([,;]\)/ \1/g;' "$infile" | tr -d \"\'\` | column -t -s\;, |less 
        
    else 

hebertluiz

install_packages () {

    yum install  -y -q "$@" &
    yum_pid=$!
    spin='-\|/'

    i=0

    while kill -0 "${yum_pid}" 2>/dev/null; do
        i=$(( (i+1) %4 ))

hebertluiz

set_color () {

    local arg2
    case $2 in
        bg|background)
        arg2=setb
        ;;
        *)
        arg2=setf
    esac

hebertluiz

function gs_set_config() {
    
    form=''
    IP="${1}"
    options_list="${2}"
    RET=''

    if [ -z "$MAX_TRIES" ]; then
        MAX_TRIES=5
    fi

hebertluiz

## To sort a file content and count use the commands below
sort list.txt | uniq -c 
     11 Sep 24
     21 Sep 25
      6 Sep 26
      2 Sep 27
# The flag -c in the uniq command returns the total count of equal and consecutive entries

hebertluiz

# Expecify below the filetype (extension)
# Change the expression {0:D3} to alter the naming scheme

$i=1; Get-ChildItem *.jpg | %{Rename-Item $_ -NewName ('{0:D3}.jpg' -f $i++)}

hebertluiz

List of quick navigation on long comands in the bash terminal
Reference: https://www.skorks.com/2009/09/bash-shortcuts-for-maximum-productivity/

Ctrl + a – Go to the start of the command line
Ctrl + e – Go to the end of the command line
Ctrl + k – Delete from cursor to the end of the command line
Ctrl + u – Delete from cursor to the start of the command line
Ctrl + w – Delete from cursor to start of word (i.e. delete backwards one word)
Ctrl + y – Paste word or text that was cut using one of the deletion shortcuts (such as the one above) after the cursor
Ctrl + xx – Move between start of command line and current cursor position (and back again)