how to input password from python script or shell script when asked during script execution

Question

Hi I have below python script with below line

Script name :   add_cert.py

keytool -keystore client.truststore.jks -alias rby-yagpps -import -file rby-yagpps_1.crt
keytool -keystore client.truststore.jks -alias rby-yagpps -import -file rby-yagpps_1.crt
keytool -keystore client.truststore.jks -alias rby-yagpps -import -file rby-yagpps_1.crt
keytool -keystore client.truststore.jks -alias rby-yagpps -import -file rby-yagpps_1.crt

with each line executing by script , it asking password , i have same password for all of the above lines

how to input password automatically without manual intervention ?

tianhua liao · Accepted Answer · 2018-09-27 07:31:56Z

1

Maybe you could try pexpect. It is designed to deal with interactive programs, which seems to be your case.

answered Sep 27, 2018 at 7:31

tianhua liao

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Vineeth Sai · Accepted Answer · 2018-09-27 07:39:10Z

1

You can use pexpect to automate this process. You can use these examples.

a small example of how this might look.

child = pexpect.spawn('./add_cert.py')
child.expect('enterpassword') # This is a regex searching for print statement of script
child.sendline('yourpassword')
# repeat your process so long as the `expect` is `enterpassword`

You could figure out some kind of loop that is particular to your case so that it does it efficiently.

edited Sep 27, 2018 at 7:39

answered Sep 27, 2018 at 7:32

Vineeth Sai

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