By default logstash writes the position is last was on to a logfile which usually resides in $HOME/.sincedb. Logstash can be fooled into believing it never parsed the logfile by specifying /dev/null as sincedb_path. Here the part of the documentation Input File. Where to write the since database (keeps track of the current position of … Read more
In short, a file URL takes the form of: file://localhost/absolute/path/to/file [ok] or you can omit the host (but not the slash): file:///absolute/path/to/file [ok] but not this: file://file_at_current_dir [no way] nor this: file://./file_at_current_dir [no way] I just confirmed that via Python’s urllib2.urlopen() More detail from http://en.wikipedia.org/wiki/File_URI_scheme: “file:///foo.txt” is okay, while “file://foo.txt” is not, although some interpreters … Read more
Warning: This answer is mainly about adding a hard link to a file, not about copying the contents. A robust and efficient copy is conceptually simple, but not simple to implement due to the need to handle a number of edge cases and system limitations that are imposed by the target operating system and it’s … Read more
Try Unison: http://www.cis.upenn.edu/~bcpierce/unison/ Syntax: unison dirA/ dirB/ Unison asks what to do when files are different, but you can automate the process by using the following which accepts default (nonconflicting) options: unison -auto dirA/ dirB/ unison -batch dirA/ dirB/ asks no questions at all, and writes to output how many files were ignored (because they … Read more
You have to sink “output” and “message” separately (the sink function only looks at the first element of type) Now if you want the input to be logged too, then put it in a script: script.R 1:5 + 1:3 # prints and gives a warning stop(“foo”) # an error And at the prompt: con <- … Read more
This code works for me: import groovy.io.FileType def list = [] def dir = new File(“path_to_parent_dir”) dir.eachFileRecurse (FileType.FILES) { file -> list << file } Afterwards the list variable contains all files (java.io.File) of the given directory and its subdirectories: list.each { println it.path }
Both SHA256 and MDA5 are hashing algorithms. They take your input data, in this case your file, and output a 256/128-bit number. This number is a checksum. There is no encryption taking place because an infinite number of inputs can result in the same hash value, although in reality collisions are rare. SHA256 takes somewhat … Read more
EDIT FOR 1.16: Enough people still hit this answer, that I thought I’d update it for Go 1.16. The function filepath.WalkDir introduced in Go 1.16 has better performance than filepath.Walk mentioned in the previous edit. Here’s a working example: package main import ( “flag” “fmt” “io/fs” “path/filepath” ) func visit(path string, di fs.DirEntry, err error) … Read more
.S files are source code files written in assembly. Assembly is an extremely low-level form of programming. The files contain assembly instructions to the processor in sequential order and are typically compiled based on a selected architecture. Examples of such files are often seen in the linux kernel for specific architectures, e.g. x86, sparc, ARM, … Read more
(*os.File).Stat() returns a os.FileInfo value, which in turn has a Size() method. So, given a file f, the code would be akin to fi, err := f.Stat() if err != nil { // Could not obtain stat, handle error } fmt.Printf(“The file is %d bytes long”, fi.Size())