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Why do you need to put #!/bin/bash at the beginning of a script file?
...es called "hash".
PPS:
Remember - under *nix, associating a suffix with a file type is merely a convention, not a "rule". An executable can be a binary program, any one of a million script types and other things as well. Hence the need for #!/bin/bash.
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Test whether a glob has any matches in bash
If I want to check for the existence of a single file, I can test for it using test -e filename or [ -e filename ] .
19 ...
CMake: How to build external projects and include their targets
...commands at build time, so you can't make direct use of Project A's import file since it's only created once Project A has been installed.
If you want to include Project A's import file, you'll have to install Project A manually before invoking Project B's CMakeLists.txt - just like any other third...
How to select lines between two marker patterns which may occur multiple times with awk/sed
...ger the print when necessary:
$ awk '/abc/{flag=1;next}/mno/{flag=0}flag' file
def1
ghi1
jkl1
def2
ghi2
jkl2
How does this work?
/abc/ matches lines having this text, as well as /mno/ does.
/abc/{flag=1;next} sets the flag when the text abc is found. Then, it skips the line.
/mno/{flag=0} u...
How to set custom favicon in Express?
I recently started working in Node.js and in the app.js file there is this line:
13 Answers
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Python: split a list based on a condition?
...way to do this?
That code is perfectly readable, and extremely clear!
# files looks like: [ ('file1.jpg', 33L, '.jpg'), ('file2.avi', 999L, '.avi'), ... ]
IMAGE_TYPES = ('.jpg','.jpeg','.gif','.bmp','.png')
images = [f for f in files if f[2].lower() in IMAGE_TYPES]
anims = [f for f in files if f...
Determine path of the executing script
...ion for the problem. This command:
script.dir <- dirname(sys.frame(1)$ofile)
returns the path of the current script file. It works after the script was saved.
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Embed git commit hash in a .Net dll
... hash in the AssemblyInformationalVersion attribute of the AssemblyInfo.cs file:
[assembly: AssemblyInformationalVersion("13.3.1.74-g5224f3b")]
Once you compile, you can view the version from windows explorer:
You can also get it programmatically via:
var build = ((AssemblyInformationalVersio...
How to encode the filename parameter of Content-Disposition header in HTTP?
...that Firefox (versions 4-9 inclusive) break if there is a comma (,) in the filename, e.g. Content-Disposition: filename="foo, bar.pdf". The result is that firefox downloads the file correctly but keeps the .part extension (e.g foo,bar.pdf-1.part). Then, of course the file won't open correctly becaus...
How to get filename without extension from file path in Ruby
How can I get the filename from a file path in Ruby?
9 Answers
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