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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: linux - How does "cat << EOF" work in bash?
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- Stack Overflow 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 python - `stack ()` vs `cat ()` in PyTorch - Stack Overflow 46 There are a few ways to pass the list of files returned by the find command to the cat command, though technically not all use piping, and none actually pipe directly to cat. The simplest is to use backticks (`): cat `find [whatever]` This takes the output of find and effectively places it on the command line of cat.
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unix - How to pipe list of files returned by find command to cat to ... This is less about how cat works, and more about shell redirection. The shell processes the command line before it runs the program. It's easier to see if you push all the io redirection to the end of the command. The first becomes: cat file1 file2 file3 file4 > file5 The shell then changes the output of cat from the terminal to file5.
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This is completely independent of cat. The second command ... 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.