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Why does the history command do nothing in a script file?

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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

4

3

If I create a file containing

 #!/bin/bash 

 history

and run it, I get no output. Running it manually in a terminal or sourceing the script file does produce output.

Why does history not work from a file?

bash shell-script command-history

share|improve this question

edited May 2 '14 at 23:24

Gilles

559k13411471657

asked May 2 '14 at 12:42

Sepahrad SalourSepahrad Salour

1,97131424

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  For better understanding I changed the question..
  
  – Sepahrad Salour
  May 2 '14 at 13:14
  

  
  
  
  

add a comment | 

4

3

If I create a file containing

 #!/bin/bash 

 history

and run it, I get no output. Running it manually in a terminal or sourceing the script file does produce output.

Why does history not work from a file?

bash shell-script command-history

share|improve this question

edited May 2 '14 at 23:24

Gilles

559k13411471657

asked May 2 '14 at 12:42

Sepahrad SalourSepahrad Salour

1,97131424

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  For better understanding I changed the question..
  
  – Sepahrad Salour
  May 2 '14 at 13:14
  

  
  
  
  

add a comment | 

If I create a file containing

 #!/bin/bash 

 history

and run it, I get no output. Running it manually in a terminal or sourceing the script file does produce output.

Why does history not work from a file?

bash shell-script command-history

share|improve this question

edited May 2 '14 at 23:24

Gilles

559k13411471657

asked May 2 '14 at 12:42

Sepahrad SalourSepahrad Salour

1,97131424

 #!/bin/bash 

 history

share|improve this question

edited May 2 '14 at 23:24

Gilles

559k13411471657

asked May 2 '14 at 12:42

Sepahrad SalourSepahrad Salour

1,97131424

share|improve this question

edited May 2 '14 at 23:24

Gilles

559k13411471657

asked May 2 '14 at 12:42

Sepahrad SalourSepahrad Salour

1,97131424

edited May 2 '14 at 23:24

Gilles

559k13411471657

edited May 2 '14 at 23:24

Gilles

559k13411471657

asked May 2 '14 at 12:42

Sepahrad SalourSepahrad Salour

1,97131424

asked May 2 '14 at 12:42

Sepahrad SalourSepahrad Salour

1,97131424

1 Answer
1

active

oldest

votes

13

The second command does "work", but the history is not enabled for non-interactive shells which is why it returns nothing in your script.

Testing the default in a non-interactive shell:

nohistory.sh:

#!/bin/bash

set -o | grep history

history

Result:

$ ./nohistory.sh

history         off

Enabling history with set -o history:

history.sh:

#!/bin/bash

set -o history

set -o | grep history

history

Result:

$ ./history.sh

history         on

    1  set -o | grep history

    2  history

share|improve this answer

edited 1 hour ago

muru

39.6k595171

answered May 2 '14 at 13:01

Adrian FrühwirthAdrian Frühwirth

1,6291114

add a comment | 

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13

The second command does "work", but the history is not enabled for non-interactive shells which is why it returns nothing in your script.

Testing the default in a non-interactive shell:

nohistory.sh:

#!/bin/bash

set -o | grep history

history

Result:

$ ./nohistory.sh

history         off

Enabling history with set -o history:

history.sh:

#!/bin/bash

set -o history

set -o | grep history

history

Result:

$ ./history.sh

history         on

    1  set -o | grep history

    2  history

share|improve this answer

edited 1 hour ago

muru

39.6k595171

answered May 2 '14 at 13:01

Adrian FrühwirthAdrian Frühwirth

1,6291114

add a comment | 

13

The second command does "work", but the history is not enabled for non-interactive shells which is why it returns nothing in your script.

Testing the default in a non-interactive shell:

nohistory.sh:

#!/bin/bash

set -o | grep history

history

Result:

$ ./nohistory.sh

history         off

Enabling history with set -o history:

history.sh:

#!/bin/bash

set -o history

set -o | grep history

history

Result:

$ ./history.sh

history         on

    1  set -o | grep history

    2  history

share|improve this answer

edited 1 hour ago

muru

39.6k595171

answered May 2 '14 at 13:01

Adrian FrühwirthAdrian Frühwirth

1,6291114

add a comment | 

The second command does "work", but the history is not enabled for non-interactive shells which is why it returns nothing in your script.

Testing the default in a non-interactive shell:

nohistory.sh:

#!/bin/bash

set -o | grep history

history

Result:

$ ./nohistory.sh

history         off

Enabling history with set -o history:

history.sh:

#!/bin/bash

set -o history

set -o | grep history

history

Result:

$ ./history.sh

history         on

    1  set -o | grep history

    2  history

share|improve this answer

edited 1 hour ago

muru

39.6k595171

answered May 2 '14 at 13:01

Adrian FrühwirthAdrian Frühwirth

1,6291114

#!/bin/bash

set -o | grep history

history

$ ./nohistory.sh

history         off

#!/bin/bash

set -o history

set -o | grep history

history

$ ./history.sh

history         on

    1  set -o | grep history

    2  history

share|improve this answer

edited 1 hour ago

muru

39.6k595171

answered May 2 '14 at 13:01

Adrian FrühwirthAdrian Frühwirth

1,6291114

edited 1 hour ago

muru

39.6k595171

edited 1 hour ago

muru

39.6k595171

answered May 2 '14 at 13:01

Adrian FrühwirthAdrian Frühwirth

1,6291114

answered May 2 '14 at 13:01

Adrian FrühwirthAdrian Frühwirth

1,6291114