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Can linux cat command be used for writing text to file?
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That's what echo does:
echo "Some text here." > myfile.txt
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How can I exclude all “permission denied” messages from “find”?
... standard error.
There are endless variations on this theme, depending on what you want to do. This will work on any variant of Unix with any Bourne shell derivative (Bash, Korn, …) and any POSIX-compliant version of find.
If you wish to adapt to the specific version of find you have on your sy...
Learning to write a compiler [closed]
... to post this reference here: tutorialspoint.com/compiler_design/index.htm What I liked about this site is that it doesn't get involved with actually writing any code to create a compiler, but it does break down the compiler into its parts: phases and stages. It does describe the logic and algorithm...
How to free memory in Java?
...rbage collector.
This memory management whitepaper (PDF) may help explain what's going on.
You can also call System.gc() to suggest that the garbage collector run immediately. However, the Java Runtime makes the final decision, not your code.
According to the Java documentation,
Calling the...
git produces Gtk-WARNING: cannot open display
...HEL 6.8 server and trying to clone a github.com repo from the RHEL box) so what I did was clone via an SSH key rather than HTTPS username/password. e.g. I used git@github.com:MyUsername/myproject.git rather than the https url. I also appropriately uploaded my public key into Github. This method work...
Remove the string on the beginning of an URL
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Depends on what you need, you have a couple of choices, you can do:
// this will replace the first occurrence of "www." and return "testwww.com"
"www.testwww.com".replace("www.", "");
// this will slice the first four characters and r...
Start/Stop and Restart Jenkins service on Windows
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@kapep: What about start and stop in mac
– Nevin Raj Victor
Jul 16 '15 at 6:25
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How can I replace a newline (\n) using sed?
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sed is intended to be used on line-based input. Although it can do what you need.
A better option here is to use the tr command as follows:
tr '\n' ' ' < input_filename
or remove the newline characters entirely:
tr -d '\n' < input.txt > output.txt
or if you have the GNU ver...
Preventing twitter bootstrap carousel from auto sliding on page load
...so stops it from cycling even when a button is clicked. But it was exactly what I was looking for. So thank you anyway!
– Tillito
Sep 19 '13 at 16:23
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How to produce a range with step n in bash? (generate a sequence of numbers with increments)
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my understanding is that seq is a part of coreutils. what is non-standard about it? arguments? thanks for your help.
– SilentGhost
Jun 8 '09 at 18:14
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