I found this topic looking for answer how to set bash color with escaping \[ \] from bash function. Actually there is solution. Bash allows to generate PS1 prompt each time prompt is rendered. set_bash_prompt(){ PS1=”\u@\h $(call_your_function) $>” } PROMPT_COMMAND=set_bash_prompt This way, PS1 will be interpreted each time prompt will be displayed, so it will … Read more
A HTTP request is constructed with a request line, headers and a body. curl does not seem to have a flag to do a “dry-run”. Depending on your needs, you might be able to see what you want using netcat as a proxy: $ nc -l localhost 8000 & [1] 3150 $ curl –proxy localhost:8000 … Read more
I’m going to give a completely non-technical answer on this one. Let’s say that there is a girl named Sally Function. You want to know if she likes you or not. So since you’re in grade school you decide to pass Sally a note (call the function with parameters) asking her if she likes you … Read more
And a PHP example, multiple matching lines will be displayed: <?php $file=”somefile.txt”; $searchfor=”name”; // the following line prevents the browser from parsing this as HTML. header(‘Content-Type: text/plain’); // get the file contents, assuming the file to be readable (and exist) $contents = file_get_contents($file); // escape special characters in the query $pattern = preg_quote($searchfor, “https://stackoverflow.com/”); // … Read more
This will do it: echo “Hi, today is $(date)”
<?php ob_start(); echo ‘a’; print ‘b’; // some statement that removes all printed/echoed items ob_end_clean(); echo ‘c’; // the final output is equal to ‘c’, not ‘abc’ ?> Output buffering functions The output buffering functions are also useful in hackery to coerce functions that only print to return strings, ie. <?php ob_start(); var_dump($myVar); $data = … Read more
You can do: printenv VARIABLE_NAME
Put all the statements you want to output to the fifo in the same subshell: # Create pipe and start reader. mkfifo pipe cat pipe & # Write to pipe. ( echo one echo two ) >pipe If you have some more complexity, you can open the pipe for writing: # Create pipe and start … Read more
Use \033 or \x1B instead of \e to represent de <Esc> character. echo -e “\033[1;31m This is red text \033[0m” See http://misc.flogisoft.com/bash/tip_colors_and_formatting
You should use readfile(): readfile(“/path/to/file”); This will read the file and send it to the browser in one command. This is essentially the same as: echo file_get_contents(“/path/to/file”); except that file_get_contents() may cause the script to crash for large files, while readfile() won’t.