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Regular expression to match balanced parentheses
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edited May 23 '17 at 12:10
Community♦
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answered Feb 13 '09 at 15:55
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How to install trusted CA certificate on Android device?
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Starting from Android 4.0 (Android ICS/'Ice Cream Sandwich', Android 4.3 'Jelly Bean' & Android 4.4 'KitKat'), system trusted certificates are on the (read-only) system partition in the folder '/system/etc/security/' as individual files. However, users can now easily add their own 'user' cer...
How do I add an existing directory tree to a project in Visual Studio?
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Maria Ines Parnisari
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answered Dec 25 '08 at 3:25
GantGant
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What's a concise way to check that environment variables are set in a Unix shell script?
...thoughts on this discussion? https://github.com/koalaman/shellcheck/issues/380#issuecomment-145872749
The gist of the discussion is:
… However, when I shellcheck it (with version 0.4.1), I get this message:
In script.sh line 13:
: ${FOO:?"The environment variable 'FOO' must be set and non-empty...
Best practices for in-app database migration for Sqlite
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RngbusRngbus
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Deleting all pending tasks in celery / rabbitmq
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303
From the docs:
$ celery -A proj purge
or
from proj.celery import app
app.control.purge()
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Difference between toFixed() and toPrecision()?
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134
toFixed(n) provides n length after the decimal point; toPrecision(x) provides x total length.
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How can I declare and use Boolean variables in a shell script?
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fi
Original Answer
Caveats: https://stackoverflow.com/a/21210966/89391
the_world_is_flat=true
# ...do something interesting...
if $the_world_is_flat ; then
echo 'Be careful not to fall off!'
fi
From: Using boolean variables in Bash
The reason the original answer is included here is b...
How to call base.base.method()?
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answered Sep 14 '15 at 10:23
EvkEvk
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