How to pipe a 'yes' or 'y' into a program while invoked with 'sudo' in bash?
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up vote
4
down vote
favorite
How to pipe a Y or yes to a program while invoking with sudo?
We can type like this
yes | command
yes | yum update
How to pipe the y from yes into a program via sudo like the following?
yes| sudo command
The y from yes is be passed into command and should go into sudo and sudo shall ask for password normally. How can I do this?
sudo pipe yes
asked Dec 15 '17 at 13:41
Abhik Bose
1,5341217
add a comment |Â
up vote
4
down vote
favorite
How to pipe a Y or yes to a program while invoking with sudo?
We can type like this
yes | command
yes | yum update
How to pipe the y from yes into a program via sudo like the following?
yes| sudo command
The y from yes is be passed into command and should go into sudo and sudo shall ask for password normally. How can I do this?
sudo pipe yes
asked Dec 15 '17 at 13:41
Abhik Bose
1,5341217
add a comment |Â
up vote
4
down vote
favorite
up vote
4
down vote
favorite
How to pipe a Y or yes to a program while invoking with sudo?
We can type like this
yes | command
yes | yum update
How to pipe the y from yes into a program via sudo like the following?
yes| sudo command
The y from yes is be passed into command and should go into sudo and sudo shall ask for password normally. How can I do this?
sudo pipe yes
asked Dec 15 '17 at 13:41
Abhik Bose
1,5341217
How to pipe a Y or yes to a program while invoking with sudo?
We can type like this
yes | command
yes | yum update
How to pipe the y from yes into a program via sudo like the following?
yes| sudo command
The y from yes is be passed into command and should go into sudo and sudo shall ask for password normally. How can I do this?
sudo pipe yes
asked Dec 15 '17 at 13:41
Abhik Bose
1,5341217
edited Dec 15 '17 at 21:52
asked Dec 15 '17 at 13:41
Abhik Bose
1,5341217
asked Dec 15 '17 at 13:41
Abhik Bose
1,5341217
asked Dec 15 '17 at 13:41
Abhik Bose
1,5341217
1,5341217
add a comment |Â
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
10
down vote
accepted
sudo reads the password from the terminal directly, not from its standard input, unless the -S option is used. Thus
yes | sudo command
should prompt for the password (if necessary), without reading from yes, then run command as root with its standard input fed from yes’s standard output.
If that doesn’t work, you can run the whole pipeline under sudo using something like
sudo sh -c "yes | command"
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
yes | sudo commandnot passingytocommandalthoughsudois asking for password.sudo sh -c "yes | command"is working fine. But is there a way to do the same without invoking another child shell explicitly?
– Abhik Bose
Dec 15 '17 at 13:50
1
If your pipe doesn’t survivesudo(yes | sudo command), then you need something else to set a pipe up for you;sudoitself can’t do that, so you need a subshell to do it for you (sudo sh -c "yes | command").
– Stephen Kitt
Dec 15 '17 at 14:18
1
Is there more than one sudo implementation?
– Stéphane Chazelas
Dec 15 '17 at 15:59
@Stéphane good point, there probably is just sudo.ws.
– Stephen Kitt
Dec 15 '17 at 16:03
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
10
down vote
accepted
sudo reads the password from the terminal directly, not from its standard input, unless the -S option is used. Thus
yes | sudo command
should prompt for the password (if necessary), without reading from yes, then run command as root with its standard input fed from yes’s standard output.
If that doesn’t work, you can run the whole pipeline under sudo using something like
sudo sh -c "yes | command"
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
yes | sudo commandnot passingytocommandalthoughsudois asking for password.sudo sh -c "yes | command"is working fine. But is there a way to do the same without invoking another child shell explicitly?
– Abhik Bose
Dec 15 '17 at 13:50
1
If your pipe doesn’t survivesudo(yes | sudo command), then you need something else to set a pipe up for you;sudoitself can’t do that, so you need a subshell to do it for you (sudo sh -c "yes | command").
– Stephen Kitt
Dec 15 '17 at 14:18
1
Is there more than one sudo implementation?
– Stéphane Chazelas
Dec 15 '17 at 15:59
@Stéphane good point, there probably is just sudo.ws.
– Stephen Kitt
Dec 15 '17 at 16:03
add a comment |Â
up vote
10
down vote
accepted
sudo reads the password from the terminal directly, not from its standard input, unless the -S option is used. Thus
yes | sudo command
should prompt for the password (if necessary), without reading from yes, then run command as root with its standard input fed from yes’s standard output.
If that doesn’t work, you can run the whole pipeline under sudo using something like
sudo sh -c "yes | command"
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
yes | sudo commandnot passingytocommandalthoughsudois asking for password.sudo sh -c "yes | command"is working fine. But is there a way to do the same without invoking another child shell explicitly?
– Abhik Bose
Dec 15 '17 at 13:50
1
If your pipe doesn’t survivesudo(yes | sudo command), then you need something else to set a pipe up for you;sudoitself can’t do that, so you need a subshell to do it for you (sudo sh -c "yes | command").
– Stephen Kitt
Dec 15 '17 at 14:18
1
Is there more than one sudo implementation?
– Stéphane Chazelas
Dec 15 '17 at 15:59
@Stéphane good point, there probably is just sudo.ws.
– Stephen Kitt
Dec 15 '17 at 16:03
add a comment |Â
up vote
10
down vote
accepted
up vote
10
down vote
accepted
sudo reads the password from the terminal directly, not from its standard input, unless the -S option is used. Thus
yes | sudo command
should prompt for the password (if necessary), without reading from yes, then run command as root with its standard input fed from yes’s standard output.
If that doesn’t work, you can run the whole pipeline under sudo using something like
sudo sh -c "yes | command"
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
sudo reads the password from the terminal directly, not from its standard input, unless the -S option is used. Thus
yes | sudo command
should prompt for the password (if necessary), without reading from yes, then run command as root with its standard input fed from yes’s standard output.
If that doesn’t work, you can run the whole pipeline under sudo using something like
sudo sh -c "yes | command"
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
edited Dec 15 '17 at 17:25
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
answered Dec 15 '17 at 13:46
Stephen Kitt
143k22309372
143k22309372
yes | sudo commandnot passingytocommandalthoughsudois asking for password.sudo sh -c "yes | command"is working fine. But is there a way to do the same without invoking another child shell explicitly?
– Abhik Bose
Dec 15 '17 at 13:50
1
If your pipe doesn’t survivesudo(yes | sudo command), then you need something else to set a pipe up for you;sudoitself can’t do that, so you need a subshell to do it for you (sudo sh -c "yes | command").
– Stephen Kitt
Dec 15 '17 at 14:18
1
Is there more than one sudo implementation?
– Stéphane Chazelas
Dec 15 '17 at 15:59
@Stéphane good point, there probably is just sudo.ws.
– Stephen Kitt
Dec 15 '17 at 16:03
add a comment |Â
yes | sudo commandnot passingytocommandalthoughsudois asking for password.sudo sh -c "yes | command"is working fine. But is there a way to do the same without invoking another child shell explicitly?
– Abhik Bose
Dec 15 '17 at 13:50
1
If your pipe doesn’t survivesudo(yes | sudo command), then you need something else to set a pipe up for you;sudoitself can’t do that, so you need a subshell to do it for you (sudo sh -c "yes | command").
– Stephen Kitt
Dec 15 '17 at 14:18
1
Is there more than one sudo implementation?
– Stéphane Chazelas
Dec 15 '17 at 15:59
@Stéphane good point, there probably is just sudo.ws.
– Stephen Kitt
Dec 15 '17 at 16:03
yes | sudo command not passing y to command although sudo is asking for password. sudo sh -c "yes | command" is working fine. But is there a way to do the same without invoking another child shell explicitly?– Abhik Bose
Dec 15 '17 at 13:50
yes | sudo command not passing y to command although sudo is asking for password. sudo sh -c "yes | command" is working fine. But is there a way to do the same without invoking another child shell explicitly?– Abhik Bose
Dec 15 '17 at 13:50
1
1
If your pipe doesn’t survive
sudo (yes | sudo command), then you need something else to set a pipe up for you; sudo itself can’t do that, so you need a subshell to do it for you (sudo sh -c "yes | command").– Stephen Kitt
Dec 15 '17 at 14:18
If your pipe doesn’t survive
sudo (yes | sudo command), then you need something else to set a pipe up for you; sudo itself can’t do that, so you need a subshell to do it for you (sudo sh -c "yes | command").– Stephen Kitt
Dec 15 '17 at 14:18
1
1
Is there more than one sudo implementation?
– Stéphane Chazelas
Dec 15 '17 at 15:59
Is there more than one sudo implementation?
– Stéphane Chazelas
Dec 15 '17 at 15:59
@Stéphane good point, there probably is just sudo.ws.
– Stephen Kitt
Dec 15 '17 at 16:03
@Stéphane good point, there probably is just sudo.ws.
– Stephen Kitt
Dec 15 '17 at 16:03
add a comment |Â
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