grep -r “texthere” . The first parameter represents the regular expression to search for, while the second one represents the directory that should be searched. In this case, . means the current directory. Note: This works for GNU grep, and on some platforms like Solaris you must specifically use GNU grep as opposed to legacy … Read more
Real, User and Sys process time statistics One of these things is not like the other. Real refers to actual elapsed time; User and Sys refer to CPU time used only by the process. Real is wall clock time – time from start to finish of the call. This is all elapsed time including time … Read more
File descriptor 1 is the standard output (stdout). File descriptor 2 is the standard error (stderr). At first, 2>1 may look like a good way to redirect stderr to stdout. However, it will actually be interpreted as “redirect stderr to a file named 1“. & indicates that what follows and precedes is a file descriptor, … Read more
With Python 2.6+ you can do: echo ‘{“foo”: “lorem”, “bar”: “ipsum”}’ | python -m json.tool or, if the JSON is in a file, you can do: python -m json.tool my_json.json if the JSON is from an internet source such as an API, you can use curl http://my_url/ | python -m json.tool For convenience in all … Read more