And display the contents of the file in the stdout using #!/bin/bash
#!/bin/bash
echo"hello" >> ~/Hello
cat ~/Hello
should I use tee ~/Hello to display contents of file Hello in stdout ?
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5That's great! So, what is your question? What part of this is giving you trouble? Please edit and clarify.– terdon ♦Feb 18, 2015 at 19:48
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#!/bin/bash echo"hello" >> ~/Hello cat ~/Hello but should I use tee ~/Hello to display contents of file Hello in stdout– jackotonyeFeb 18, 2015 at 19:56
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@jackotonye What part of the word edit did you not understand. You should improve you post, not comment on comments.– AnthonFeb 18, 2015 at 21:58
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You really a cruel person– jackotonyeFeb 19, 2015 at 18:06
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1 Answer
No, tee is not for displaying the contents of a file. As with most *nix commands, you can see its manual by running man tee. There, you will see:
NAME
tee - read from standard input and write to standard output and files
DESCRIPTION
Copy standard input to each FILE, and also to standard output.
So, tee is used to write to files. The most common usage is to display text on screen and also save it to a file. For example:
echo "foo" | tee ~/bar
The command above will print foo to your screen (standard output) and also save it to the file ~/bar.
If you want to show the contents of a file, the standard way is precisely what you're doing: cat file. So, cat ~/Hello will show the contents of the file ~/Hello.
By the way, you have a typo in your script. You want echo "hello" not echo"hello".