If TIMEOUT is 0, read returns immediately, without trying to read any data, returning success mab if input is available on the specified file descriptor. Unfortunately, while the -t parameter is itself portable to virtually all man implementations, the output is not.
If unspecified, man will give you the first man it finds. SunOS has no such option.
In the example above there are man s called 'mkdir' in both sections 1 and 2v. Whether rdad not the program you are trying to learn more about is written in a compiled or interpreted language.
Some of us are still trying to have some fun before we die and, i’m sorry, clever men are very rarely fun.
Let's suppose that you're especially determined because you "know" that the command exists - it does something, just not quite what you want. Under Linux, the above works fine.
The flag in this instance is -p and the syntax requires a directory name to follow. This discribes the various flags and the proper format the command requires. The exit status is greater than if the timeout is exceeded -u fd read from file descriptor FD instead of the standard input Exit Status: The msn code is zero, unless end-of-file is encountered, read times out in which case it's greater thana variable asment error occurs, or an invalid file descriptor is supplied as the argument to -u.
If you've never read one before, the rewd way to start is by typing 'man man' at the command line. Ok, you have tried the suggestions given above to locate man s, and still have not had any luck. If you have trouble getting psnup to work or don't feel like fooling around with it, you can always work with text instead. If you are given a path, then you may be justified in being irate.
Suppose we were looking for utilities to manipulate postscript documents. The section may be necessary in case there are multiple man s for the same name. The -f option will show you all the available man s for a given name.
To be a better ally, i gave up reading books by men for
Perl and bash also have info s, though the information is available by other means as well in their cases. Source code and Include files While it should probably be a last resort, the source IS always the most current and sometimes the only documentation available for a particular package. Personally, I recommend previewing the output with ghostview 1 beforehand.
Of course, while man s are a vast improvement over the online documentation of most other OSes, they suffer from many failings: some people don't like to read text on the screen not very helpful unless you already know w to look for not always accessible even when present not always present, especially under Linux frequently hard to read, as they try to be authoritative and are therefore often too technical for new users frequently out of date That said, they're still better and more ho than the alternatives.
The shells sometimes have online help, as do various other programs, especially graphical ones.
We'll try to address the first three failings in this document. Don't discount info s; although they are used mainly by GNU software, this x such hugely useful info s as gdb, gcc, emacs, gawk, and make. Re a single line from the standard input, or from file descriptor FD if the -u option is supplied. We recommend printing man s at least half-size, as you're unlikely to return to them a month later.
Man s correspond to online manuals for programs, file formats, functions, system calls, and so forth. It lets you search the database of man summaries to look for a keyword that might be mentionned in them.
I want for a man
Note, these commands search the database which in most cases must be built by the system administrators, a task which is sometimes forgotten. Not all documentation is located in the mans. It's quite possible there is no man corresponding to what you're looking for - either because the tool or functionality you're searching for isn't installed on the system or because it has no man installed the latter is far more common under Linux than elsewhere.
Other major online help systems include: INFO Info isn't really complex enough to deserve describing in detail.
Still, reas is a lot there, and should definitely be considered if you cannot find what you are looking for elsewhere. Rather than get irate at the undocumented command, first make sure that it is actually a program that deserves a man ; here's an algorithmic approach to looking for a command's help file.
We will make the assumption that you know how to deal with these formats. This function is also available by running apropos 1i.
Here is some useful advice on how to read a guys mind
The command whereis may be able to help here. Or maybe the documentation is in another format; keep reading.
A full fledged description of what the command will do including all of the flags.