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How to check whether an object has certain method/property?
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Perhaps you should take a look at scripting an Adobe product with COM. The same function call can return entirely different COM objects, and by (Adobe's) design, their only common ancestor is object. Also: this is a commonplace pattern in pretty much any mode...
Prevent users from submitting a form by hitting Enter
.../form>
One nice feature of this approach is that it works without JavaScript; whether or not JavaScript is enabled, a standards-conforming web browser is required to prevent implicit form submission.
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How to have git log show filenames like svn log -v
... removed line counts for several commits at once, so I created my own bash script for that:
#!/bin/bash
for ((i=0; i<=$1; i++))
do
sha1=`git log -1 --skip=$i --pretty=format:%H`
echo "HEAD~$i $sha1"
git diff --stat HEAD~$(($i+1)) HEAD~$i
done
To be called eg. ./changed_files 99 to...
Shell command to tar directory excluding certain files/folders
Is there a simple shell command/script that supports excluding certain files/folders from being archived?
27 Answers
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Best ways to teach a beginner to program? [closed]
...tive mode like a command line to get a feel for how it works, or run whole scripts at once. You can run your scripts interpreted on the fly, or compile them into binaries. There are thousands of modules to extend the functionality. You can make a graphical calculator like the one bundled with Window...
How do I change the number of open files limit in Linux? [closed]
... system-wide limits should be set during the system initialization in init scripts and user limits should be set during user login for example by using pam_limits.
There are often defaults set when the machine boots. So, even though you may reset your ulimit in an individual shell, you may find th...
In Perl, how can I read an entire file into a string?
...n perldoc perlvar and perldoc -f local.
Incidentally, if you can put your script on the server, you can have all the modules you want. See How do I keep my own module/library directory?.
In addition, Path::Class::File allows you to slurp and spew.
Path::Tiny gives even more convenience methods su...
How can I stop a Postgres script when it encounters an error?
Is there a way to specify that when executing a sql script it stops when encountering the first error on the script, it usually continues, regardless of previous errors.
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Compile (but do not run) a Python script [duplicate]
How do I compile a Python script without running it? I just want to check the script for syntax errors. I was hoping for a simple command line switch, but I didn't see anything in python --help . I'd like an answer for both Python 2 and Python 3.
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Run automatically program on startup under linux ubuntu [closed]
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sudo chmod +x /etc/init.d/filename
sudo update-rc.d filename defaults
Script should now start on boot. Note that this method also works with both hard links and symbolic links (ln).
Edit
At this point in the boot process PATH isn't set yet, so it is critical that absolute paths are used through...