Bash – Using “@” as a bash function name

bashfunction

Is it possible to use the "@" symbol as a function name in a bash script? The following does not work:

function @() {
  echo hello
}

Best Answer

From man bash

   name   A word consisting only of alphanumeric characters and underscores, 
          and beginning with an  alphabetic character or an underscore.  Also 
          referred to as an identifier.

Shell functions are declared as follows:
          name () compound-command [redirection]
          function name [()] compound-command [redirection]

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Bash – How to use sudo within a function

it's generally bad practice to put sudo in a script. A better choice would be to call the script with sudo from ~/.bash_logout or wherever else you want to use it, if you must, or better still just make /var/log/test.log world-writable.

Bash – Using bash shell function inside AWK

Try to use system() function:

awk '{printf("%s ",$1); system("d2h " $2)}' file

In your case system will call d2h 247808 and then append output of this command to printf output:

Mike 3C800

EDIT:

As system uses sh instead of bash I can't find a way to access .bashrc. But you can still use functions from your current bash script:

#!/bin/bash
d2h() {
    # do some cool conversion here
    echo "$1" # or just output the first parameter
}
export -f d2h
awk '{printf("%s ",$1); system("bash -c '\''d2h "$2"'\''")}' file

EDIT 2:

I don't know why, but this is not working on my Ubuntu 16.04. This is strange, because it used to work on Ubuntu 14.04.

Best Answer

Related Solutions

Bash – How to use sudo within a function

Bash – Using bash shell function inside AWK

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