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Can I have an IF block in DOS batch file?
...oks mighty suspicious to me. I don't know what the environment variable is set to or how you're setting it, but I very much doubt that the code you've shown will produce the result you're looking for.
The following sample code works fine for me:
@echo off
if ERRORLEVEL == 0 (
echo GP Manager...
Command line for looking at specific port
Is there a way to examine the status of a specific port from the Windows command line? I know I can use netstat to examine all ports but netstat is slow and looking at a specific port probably isn't.
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List of tables, db schema, dump etc using the Python sqlite3 API
For some reason I can't find a way to get the equivalents of sqlite's interactive shell commands:
11 Answers
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Convert data.frame column to a vector?
...clarification or two in the comments.
A data frame is a list. When you subset a data frame using the name of a column and [, what you're getting is a sublist (or a sub data frame). If you want the actual atomic column, you could use [[, or somewhat confusingly (to me) you could do aframe[,2] which ...
Node.js check if file exists
How do i check the existence of a file ?
17 Answers
17
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Immutable vs Mutable types
...bers: int(), float(), complex()
immutable sequences: str(), tuple(), frozenset(), bytes()
Common mutable type (almost everything else):
mutable sequences: list(), bytearray()
set type: set()
mapping type: dict()
classes, class instances
etc.
One trick to quickly test if a type is mutable or no...
PowerShell equivalent to grep -f
I'm looking for the PowerShell equivalent to grep --file=filename . If you don't know grep , filename is a text file where each line has a regular expression pattern you want to match.
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Converting a UNIX Timestamp to Formatted Date String
..., since Z indicate UTC. Tinus: Unix timestamps do not contain timezone offsets. date and gmdate's output will differ based on the TZ variable (on *nix at least)
– Gert van den Berg
May 3 '16 at 14:05
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What must I know to use GNU Screen properly? [closed]
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I couldn't get used to screen until I found a way to set a 'status bar' at the bottom of the screen that shows what 'tab' or 'virtual screen' you're on and which other ones there are. Here is my setup:
[roel@roel ~]$ cat .screenrc
# Here comes the pain...
caption always "%{=b ...
Intersection and union of ArrayLists in Java
...t; List<T> union(List<T> list1, List<T> list2) {
Set<T> set = new HashSet<T>();
set.addAll(list1);
set.addAll(list2);
return new ArrayList<T>(set);
}
public <T> List<T> intersection(List<T> list1, List&l...