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How do I view a command's information? [duplicate]

How to find application's path from command line?Which of these three commands is telling the TRUE Redhat release informationCan I edit executed command's informations?How to create a new command and how to view the code for commandsA command's output and its symbolic link's output do not matchHow to use command output (ls) into other command's input (sox)?Source of information - command whoHow To Pre-Find A Command's Impact?

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0

This question already has an answer here:

• 
  How to find application's path from command line?
  
  5 answers
  
  

Correct me if I am wrong:

If I remember correctly, a command in terminal is linked to a specific executable(or maybe a script is also allowed?) in filesystem/disk.

For example, python runs python2.7 and python3 runs python3.

Now the problem is that I install 2 packages with same terminal command.

pip install packageA

pip3 install packageA

They both has the command packageACommand run. So I want to check the current packageACommand command infomation to see which python/what environments it's using.

And generally, I am wondering how can I view a command's (meta) information? Like checking what it acutally does/linked behind the scene?

command

share|improve this question

edited yesterday

Rick

asked yesterday

RickRick

31933 silver badges1212 bronze badges

marked as duplicate by muru, Community♦ yesterday

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  if you don't specify interpreter when running the command, it will run environment default. To control python version the package is run with, specify it before command or see: redsymbol.net/articles/env-and-python-scripts-version
  
  – Bart
  yesterday
  

  
  
  
  

add a comment | 

0

This question already has an answer here:

• 
  How to find application's path from command line?
  
  5 answers
  
  

Correct me if I am wrong:

If I remember correctly, a command in terminal is linked to a specific executable(or maybe a script is also allowed?) in filesystem/disk.

For example, python runs python2.7 and python3 runs python3.

Now the problem is that I install 2 packages with same terminal command.

pip install packageA

pip3 install packageA

They both has the command packageACommand run. So I want to check the current packageACommand command infomation to see which python/what environments it's using.

And generally, I am wondering how can I view a command's (meta) information? Like checking what it acutally does/linked behind the scene?

command

share|improve this question

edited yesterday

Rick

asked yesterday

RickRick

31933 silver badges1212 bronze badges

marked as duplicate by muru, Community♦ yesterday

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  if you don't specify interpreter when running the command, it will run environment default. To control python version the package is run with, specify it before command or see: redsymbol.net/articles/env-and-python-scripts-version
  
  – Bart
  yesterday
  

  
  
  
  

add a comment | 

This question already has an answer here:

• 
  How to find application's path from command line?
  
  5 answers
  
  

Correct me if I am wrong:

If I remember correctly, a command in terminal is linked to a specific executable(or maybe a script is also allowed?) in filesystem/disk.

For example, python runs python2.7 and python3 runs python3.

Now the problem is that I install 2 packages with same terminal command.

pip install packageA

pip3 install packageA

They both has the command packageACommand run. So I want to check the current packageACommand command infomation to see which python/what environments it's using.

And generally, I am wondering how can I view a command's (meta) information? Like checking what it acutally does/linked behind the scene?

command

share|improve this question

edited yesterday

Rick

asked yesterday

RickRick

31933 silver badges1212 bronze badges

pip install packageA

pip3 install packageA

share|improve this question

edited yesterday

Rick

asked yesterday

RickRick

31933 silver badges1212 bronze badges

share|improve this question

edited yesterday

Rick

asked yesterday

RickRick

31933 silver badges1212 bronze badges

asked yesterday

RickRick

31933 silver badges1212 bronze badges

asked yesterday

RickRick

31933 silver badges1212 bronze badges

1 Answer
1

active

oldest

votes

1

Use:

which <command>

For example:

 $ which cat

 /usr/bin/cat

share|improve this answer

answered yesterday

JShorthouseJShorthouse

67722 silver badges1010 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Ah yes it is. I just can't remember. But some commands are binary executables and some are scripts. I can only open and read the scripts files.
  
  – Rick
  yesterday
  
  
  

  
  
  
  

add a comment | 

1

Use:

which <command>

For example:

 $ which cat

 /usr/bin/cat

share|improve this answer

answered yesterday

JShorthouseJShorthouse

67722 silver badges1010 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Ah yes it is. I just can't remember. But some commands are binary executables and some are scripts. I can only open and read the scripts files.
  
  – Rick
  yesterday
  
  
  

  
  
  
  

add a comment | 

1

Use:

which <command>

For example:

 $ which cat

 /usr/bin/cat

share|improve this answer

answered yesterday

JShorthouseJShorthouse

67722 silver badges1010 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Ah yes it is. I just can't remember. But some commands are binary executables and some are scripts. I can only open and read the scripts files.
  
  – Rick
  yesterday
  
  
  

  
  
  
  

add a comment | 

Use:

which <command>

For example:

 $ which cat

 /usr/bin/cat

share|improve this answer

answered yesterday

JShorthouseJShorthouse

67722 silver badges1010 bronze badges

which <command>

 $ which cat

 /usr/bin/cat

share|improve this answer

answered yesterday

JShorthouseJShorthouse

67722 silver badges1010 bronze badges

answered yesterday

JShorthouseJShorthouse

67722 silver badges1010 bronze badges

answered yesterday

JShorthouseJShorthouse

67722 silver badges1010 bronze badges