Vfrdtyky

Add to .bashrc

function ListAllCommands

{

    echo -n $PATH | xargs -d : -I {} find {} -maxdepth 1 

        -executable -type f -printf '%Pn' | sort -u

}

If you also want aliases, then:

function ListAllCommands

{

    COMMANDS=`echo -n $PATH | xargs -d : -I {} find {} -maxdepth 1 

        -executable -type f -printf '%Pn'`

    ALIASES=`alias | cut -d '=' -f 1`

    echo "$COMMANDS"$'n'"$ALIASES" | sort -u

}

There is the

type -a mycommand

command which lists all aliases and commands in $PATH where mycommand is used. Can be used to check if the command exists in several variants. Other than that... There's probably some script around that parses $PATH and all aliases, but don't know about any such script.

Use "which searchstr". Returns either the path of the binary or the alias setup if it's an alias

Edit:
If you're looking for a list of aliases, you can use:

alias -p | cut -d= -f1 | cut -d' ' -f2

Add that in to whichever PATH searching answer you like. Assumes you're using bash..

Try this script:

#!/bin/bash

echo $PATH  | tr : 'n' | 

while read e; do 

    for i in $e/*; do

        if [[ -x "$i" && -f "$i" ]]; then     

            echo $i

        fi

    done

done

The others command didn't work for me on embedded systems, because they require bash or a more complete version of xargs.

The following commands should work on any Unix-like system.

List by folder :

ls $(echo $PATH | tr ':' ' ')

List all commands by name

ls $(echo $PATH | tr ':' ' ') | grep -v '/' | grep . | sort

For Mac users (find doesn't have -executable and xargs doesn't have -d):

echo $PATH | tr ':' 'n' | xargs -I {} find {} -maxdepth 1 -type f -perm '++x'

It's useful to list the commands based on the keywords associated with the command.

Use: man -k "your keyword"

feel free to combine with:| grep "another word"

for example, to find a text editor:
man -k editor | grep text

Try to press ALT-? (alt and question mark at the same time). Give it a second or two to build the list. It should work in bash.

Here's a solution that gives you a list of all executables and aliases. It's also portable to systems without xargs -d (e.g. Mac OS X), and properly handles paths with spaces in them.

#!/bin/bash

(echo -n $PATH | tr : '' | xargs -0 -n 1 ls; alias | sed 's/alias ([^=]*)=.*/1/') | sort -u | grep "$@"

Usage: myscript.sh [grep-options] pattern, e.g. to find all commands that begin with ls, case-insensitive, do:

myscript -i ^ls

shortcut method to list out all commands.
Open terminal and press two times "tab" button.
Thats show all commands in terminal

You can always to the following:

1. Hold the $PATH environment variable value.

2. Split by ":"

3. For earch entry: 

    ls * $entry 

4. grep your command in that output.

The shell will execute command only if they are listed in the path env var anyway.

it depends, by that I mean it depends on what shell you are using. here are the constraints I see:

1. must run in the same process as your shell, to catch aliases and functions and variables that would effect the commands you can find, think PATH or EDITOR although EDITOR might be out of scope. You can have unexported variables that can effect things.


2. it is shell specific or your going off into the kernel, /proc/pid/enviorn and friends do not have enough information

I use ZSH so here is a zsh answer, it does the following 3 things:

1. dumps path


2. dumps alias names


3. dumps functions that are in the env


4. sorts them

here it is:

feed_me() {

    (alias | cut -f1 -d= ; hash -f; hash -v | cut -f 1 -d= ; typeset +f) | sort

}

If you use zsh this should do it.

Alternatively, you can get a convenient list of commands coupled with quick descriptions (as long as the command has a man page, which most do):

apropos -s 1 ''



-s 1 returns only "section 1" manpages which are entries for executable programs.



'' is a search for anything. (If you use an asterisk, on my system, bash throws in a search for all the files and folders in your current working directory.)

Then you just grep it like you want.

apropos -s 1 '' | grep xdg

yields:

xdg-desktop-icon (1) - command line tool for (un)installing icons to the desktop

xdg-desktop-menu (1) - command line tool for (un)installing desktop menu items

xdg-email (1)        - command line tool for sending mail using the user's preferred e-mail composer

xdg-icon-resource (1) - command line tool for (un)installing icon resources

xdg-mime (1)         - command line tool for querying information about file type handling and adding descriptions for new file types

xdg-open (1)         - opens a file or URL in the user's preferred application

xdg-screensaver (1)  - command line tool for controlling the screensaver

xdg-settings (1)     - get various settings from the desktop environment

xdg-user-dir (1)     - Find an XDG user dir

xdg-user-dirs-update (1) - Update XDG user dir configuration

The results don't appear to be sorted, so if you're looking for a long list, you can throw a | sort | into the middle, and then pipe that to a pager like less/more/most. ala:

apropos -s 1 '' | sort | grep zip | less

Which returns a sorted list of all commands that have "zip" in their name or their short description, and pumps that the "less" pager. (You could also replace "less" with $PAGER and use the default pager.)

The problem is that the tab-completion is searching your path, but all commands are not in your path.

To find the commands in your path using bash you could do something like :

for x in echo $PATH | cut -d":" -f1; do ls $x; done

Here's a function you can put in your bashrc file:

function command-search

{

   oldIFS=${IFS}

   IFS=":"



   for p in ${PATH}

   do

      ls $p | grep $1

   done



   export IFS=${oldIFS}

}

Example usage:

$ command-search gnome

gnome-audio-profiles-properties*

gnome-eject@

gnome-keyring*

gnome-keyring-daemon*

gnome-mount*

gnome-open*

gnome-sound-recorder*

gnome-text-editor@

gnome-umount@

gnome-volume-control*

polkit-gnome-authorization*

vim.gnome*

$

FYI: IFS is a variable that bash uses to split strings.

Certainly there could be some better ways to do this.

maybe i'm misunderstanding but what if you press Escape until you got the Display All X possibilities ?

Basic commands:

$ touch :- user for create empty file

Syn:- touch filename

Ex: touch rama

$ls list of files and directories

$ ls –l Long listing

File type, permissions, link files, user(or)owner name, group name, file size, time stamp, file or dir name.

– regular (or) normal file

d directory

l link file

ls –a : show the all (including hidden files)

Hidden files and directories start with . (dot)

find more commands @ http://k2schools.com/linux-commands/

compgen -c > list.txt && wc list.txt