Try this (untested): cat test.txt | ssh username@masternode “hadoop dfs -put – hadoopFoldername/test.txt” I’ve used similar tricks to copy directories around: tar cf – . | ssh remote “(cd /destination && tar xvf -)” This sends the output of local-tar into the input of remote-tar.
This should work: echo “PREPENDED STRING” | cat – /tmp/file | sed ‘s/test/test2/g’ > /tmp/result
When you call add_name() and add_surname() directly from another function, you actually call the decorated versions of them so the arguments expected may not be as you defined them (see the answers to How to strip decorators from a function in python for some details on why). I would suggest modifying your implementation so that … Read more
How to do a loop against stdin and get result stored in a variable Under bash (and other shell also), when you pipe something to another command via |, you will implicitly create a fork, a subshell that is a child of current session. The subshell can’t affect current session’s environment. So this: TOTAL=0 printf … Read more
(Note that &>>file appends to a file while &> would redirect and overwrite a previously existing file.) To combine stdout and stderr you would redirect the latter to the former using 1>&2. This redirects stdout (file descriptor 1) to stderr (file descriptor 2), e.g.: $ { echo “stdout”; echo “stderr” 1>&2; } | grep -v … Read more