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Exit Shell Script Based on Process Exit Code
...ble so you would have something like:
ls -al file.ext
rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
You need to be careful of piped commands since the $? only gives you the return code of the last element in the pipe so, in the code:
ls -al file.ext | sed 's/^/xx: /"
will not return an error cod...
How can I create a Set of Sets in Python?
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answered May 9 '11 at 0:18
a3nma3nm
7,50155 gold badges2525 silver badges3737 bronze badges
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Left padding a String with Zeros [duplicate]
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20 Answers
20
Active
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Check if a string matches a regex in Bash script
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330
You can use the test construct, [[ ]], along with the regular expression match operator, =~, to ...
Select rows which are not present in other table
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+500
There are basically 4 techniques for this task, all of them standard SQL.
NOT EXISTS
Often fastest in Postgres.
SELECT ip
FROM ...
How to read from stdin line by line in Node
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edited Mar 20 '15 at 14:45
Gavin
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answered Nov 20 '13...
Android : Check whether the phone is dual SIM
... telephonyInfo.imeiSIM1 = getDeviceIdBySlot(context, "getDeviceIdGemini", 0);
telephonyInfo.imeiSIM2 = getDeviceIdBySlot(context, "getDeviceIdGemini", 1);
} catch (GeminiMethodNotFoundException e) {
e.printStackTrace();
try {
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Angularjs if-then-else construction in expression
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Rafael Almeida
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answered May 16 '13 at 11:16
Andre GoncalvesAndr...
Most efficient way of making an if-elif-elif-else statement when the else is done the most?
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100
The code...
options.get(something, doThisMostOfTheTime)()
...looks like it ought to be faste...
SQLite Reset Primary Key Field
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answered Oct 21 '09 at 16:03
Nick DandoulakisNick Dandoulakis
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