yanivk1984

# add string every 100 lines
sed '0~100 i <string_to_add>'

sed '<(INT)start_from_line>~<(INT)add_every_n_lines> i <string_to_add>'

yanivk1984

for arg, value in sorted(vars(args).items()):
    logging.info("Argument %s: %r", arg, value)

yanivk1984

  def check_float_or_int(value: [int, float], return_str=False) -> [str, float, int]:
      """
      The function will take a a number and see if it can be int without changing its value.
      for example for 1.0 the function will change the type from float to int and return 1.
      If the number is a float of 1.2 the program will return float 1.2.
      :param value: number, can be int float or str
      :param return_str: if this flag set to True, the number will be returned as a string
      :return: the number itself, if its a float whole number it will convert to int.
      """
      int_ = int(value)

yanivk1984

# show MultiQueue configuration from expert
mq_mng --show
mq_mng -o

# show MultiQueue configuration from clish
show interface <interface> multi-queue [verbose]

# configure MultiQueue from clish
set interface <interface> multi-queue {off|auto|manual core <id of CPU core>}

yanivk1984

# run command
sshpass -p qwe123 ssh -n -o StrictHostKeyChecking=no "admin@$IP" 'fw stat'

# transfer a file
sshpass -p 'qwe123' scp cp.pnp admin@$IP:/opt/CPshrd-R80.30/conf/cp.pnp

yanivk1984

return an array
const counters = <array>.filter(c => c.id !== counterId);

yanivk1984

tr -s \  <<file_name>

yanivk1984

const express = require('express');
const https = require('https');
const fs = require('fs');
const port = 8000;
const path = require('path')

var key = fs.readFileSync(__dirname + '/key.pem');
var cert = fs.readFileSync(__dirname + '/cert.pem');
var options = {
    key: key,

yanivk1984

# creating udp connection under port 161 and then exiting (working for tcp)
cat <(echo "") - | nc <ip-address> 161

# creating udp connection under port 161 and then exiting after one second (can also work for udp)
echo "" | nc -w 1 172.31.253.167 161 -u

# getting the result with success message
nc -uvz 172.31.253.167 161

yanivk1984

# keep track of the last executed command
trap 'last_command=$current_command; current_command=$BASH_COMMAND' DEBUG
# echo an error message before exiting
trap 'echo "\"${last_command}\" command filed with exit code $?."' EXIT

For example, if we run ls --fake-option then we’ll see an informative error message as follows.

ls: unrecognized option '--fake-option'
Try 'ls --help' for more information.
"ls --fake-option" command filed with exit code 2.