The cat <<EOF syntax is very useful when working with multi-line text in Bash, eg. when assigning multi-line string to a shell variable, file or a pipe. Examples of cat <<EOF syntax usage in Bash:
An essential difference between cat and print is the class of the object they return. This difference has practical consequences for what you can do with the returned object.
cat "Some text here." > myfile.txt Possible? Such that the contents of myfile.txt would now be overwritten to: Some text here. This doesn't work for me, but also doesn't throw any errors. Specifically interested in a cat -based solution (not vim/vi/emacs, etc.). All examples online show cat used in conjunction with file inputs, not raw text...
xnew_from_cat = torch.cat((x, x, x), 1) print(f'{xnew_from_cat.size()}') print() # stack serves the same role as append in lists. i.e. it doesn't change the original # vector space but instead adds a new index to the new tensor, so you retain the ability # get the original tensor you added to the list by indexing in the new dimension
1 cat with <<EOF>> will create or append the content to the existing file, won't overwrite. whereas cat with <<EOF> will create or overwrite the content.
First one: cat filename | grep regex Normally cat opens file and prints its contents line by line to stdout. But here it outputs its content to pipe'|'. After that grep reads from pipe (it takes pipe as stdin) then if matches regex prints line to stdout. But here there is a detail grep is opened in new shell process so pipe forwards its input as output to new shell process. Second one: grep ...
Can someone please shed some light on an equivalent method of executing something like "cat file1 -" in Linux ? What I want to do is to give control to the keyboard stream (which is "-&
While cat does stand for "concatenate", what it actually does is simply display one or multiple files, in order of their appearance in the command line arguments to cat. The common pattern to view the contents of a file on Linux or *nix systems is: cat <file> The main difference between cat and Git's cat-file is that it only displays a single file (hence the -file part). Git's cat-file doesn't ...
