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What is the use of declare with option -t

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If you call the command help declare. You will see the following information:

-t NAME :  to make NAMEs have the `trace' attribute

Is there any example that demonstrates the use of this option. I thought that this plays the same role as that of the command set -o functrace except that it only applies to the arguments instead of all fucntions.

The motivation of this question is that I want a function foo to interits a trap. So I tried tried decalre -t foo but it did not work.

I can certainly use set -o functrace to make all functions to inherrit a trap, but there are circumstances when I want only one or two functions to inherit a trap.

bash shell-script

share|improve this question

asked 11 mins ago

Jack ChenJack Chen

384

add a comment | 

0

If you call the command help declare. You will see the following information:

-t NAME :  to make NAMEs have the `trace' attribute

Is there any example that demonstrates the use of this option. I thought that this plays the same role as that of the command set -o functrace except that it only applies to the arguments instead of all fucntions.

The motivation of this question is that I want a function foo to interits a trap. So I tried tried decalre -t foo but it did not work.

I can certainly use set -o functrace to make all functions to inherrit a trap, but there are circumstances when I want only one or two functions to inherit a trap.

bash shell-script

share|improve this question

asked 11 mins ago

Jack ChenJack Chen

384

add a comment | 

If you call the command help declare. You will see the following information:

-t NAME :  to make NAMEs have the `trace' attribute

Is there any example that demonstrates the use of this option. I thought that this plays the same role as that of the command set -o functrace except that it only applies to the arguments instead of all fucntions.

The motivation of this question is that I want a function foo to interits a trap. So I tried tried decalre -t foo but it did not work.

I can certainly use set -o functrace to make all functions to inherrit a trap, but there are circumstances when I want only one or two functions to inherit a trap.

bash shell-script

share|improve this question

asked 11 mins ago

Jack ChenJack Chen

384

-t NAME :  to make NAMEs have the `trace' attribute

share|improve this question

asked 11 mins ago

Jack ChenJack Chen

384

share|improve this question

asked 11 mins ago

Jack ChenJack Chen

384

asked 11 mins ago

Jack ChenJack Chen

384

asked 11 mins ago

Jack ChenJack Chen

384