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What is the difference between double-ampersand (&&) and semicolon (;) in Linux Bash?
What is the difference between ampersand and semicolon in Linux Bash ?
3 Answers
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How can I find out what version of git I'm running?
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$ git --version
git version 1.7.3.4
git help and man git both hint at the available arguments you can pass to the command-line tool
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Why an interface can not implement another interface?
...ine abstract methods (the sane way an interface does), it is still a class and still has to be inherited (extended) and not implemented.
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Convert SVG to PNG in Python
...ry.
I made a minimalist "hello world" that renders SVG to a cairo
surface and writes it to disk:
import cairo
import rsvg
img = cairo.ImageSurface(cairo.FORMAT_ARGB32, 640,480)
ctx = cairo.Context(img)
## handle = rsvg.Handle(<svg filename>)
# or, for in memory SVG data:
handle= rsvg.Hand...
What does rake db:test:prepare actually do?
I am following the rails tutorial videos and I can't figure out what the db:test:prepare command actually does. Can someone provide an explanation?
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Update an outdated branch against master in a Git repo
I have a Git repository that has branch (local and remote) that has become outdated. I would like to bring this branch up to date with the master branch, but I don't know how to do this. There will also probably be many merge conflicts.
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How to set headers in http get request?
...ge has many functions that deal with headers. Among them are Add, Del, Get and Set methods. The way to use Set is:
func yourHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("header_name", "header_value")
}
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Omitting one Setter/Getter in Lombok
...n fields, I annotated it with @Data in order to generate all the setters and getter. However there is one special field for which I don't want to the accessors to be implemented.
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Is there any difference between a GUID and a UUID?
I see these 2 acronyms thrown around, and I was wondering if there are any differences between a GUID and a UUID?
6 Answers...
How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
... a bash script for several subprocesses spawned from that script to finish and return exit code !=0 when any of the subprocesses ends with code !=0 ?
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