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#1
December 11th, 2001, 06:09 AM
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automatically pipe text to a program
Hi there, I have a little prgram that executes commands. One of the commands involves a program that has the format as follows:
#prog please enter A: [user text 1] please enter B: [user text 2] please enter C: [user text 3] -- results -- # Can you think of a way to automatically send [user text i] from the command line. Thanks
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#2
December 11th, 2001, 08:47 AM
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You get all params from the command line in the vars $0, $1, $2, ..., $0 being the file name. Of course this makes it impossible for the user to give only the 1st and 3rd param while leaving the 2nd empty.
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#3
December 11th, 2001, 08:55 AM
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What I mean is that my program runs commands as if they were at teh command prompt and there is a program that doesn't use params but requires the user to type them in.
Basically I'm writing a program that does some automation, a similar example would be writing a script like such: setPassword $username$ $password$ which would then run the unix passwd command
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#4
December 11th, 2001, 09:25 AM
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Assuming that the user inputs are separated by the return key, you can simply echo the stuff you get from the user with some newlines into a temporary file and pass that to the program's stdin.
Like this: Code:
echo "" > /tmp/tmpinput chmod 700 /tmp/tmpinput echo "$1" > /tmp/tmpinput echo -e "\n" > /tmp/tmpinput # etc. myprog < /tmp/tmpinput rm /tmp/tmpinput I don't know if it works, though. Btw: I hope you took passwd just as an example. You shouldn't try to do it really with that or any other security-related command.
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