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Sublime Text 2: How to delete blank/empty lines
...answered Oct 16 '17 at 22:40
rsc05rsc05
2,02322 gold badges1818 silver badges3737 bronze badges
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iTerm 2: How to set keyboard shortcuts to jump to beginning/end of line?
... SEND
⌘← "SEND HEX CODE" 0x01
⌘→ "SEND HEX CODE" 0x05
⌥← "SEND ESC SEQ" b
⌥→ "SEND ESC SEQ" f
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How do I test if a variable is a number in Bash?
...ion, like so:
re='^[0-9]+$'
if ! [[ $yournumber =~ $re ]] ; then
echo "error: Not a number" >&2; exit 1
fi
If the value is not necessarily an integer, consider amending the regex appropriately; for instance:
^[0-9]+([.][0-9]+)?$
...or, to handle numbers with a sign:
^[+-]?[0-9]+([.]...
Android: Test Push Notification online (Google Cloud Messaging) [closed]
...s, device registration id has been changed mainly due to app re-install
{ "error": "Unavailable" } - Server not available, resend the message
{ "error": "InvalidRegistration" } - Invalid device registration Id
{ "error": "NotRegistered"} - Application was uninstalled from the device
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How do I install jmeter on a Mac?
....com/pub/apache/jmeter/binaries/… curl: (22) The requested URL returned error: 404 Not Found Error: Failed to download resource "jmeter" Download failed: mirror.cogentco.com/pub/apache/jmeter/binaries/…
– tk_
Nov 24 '14 at 5:48
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Http 415 Unsupported Media type error with JSON
... a JSON request and it responds with a HTTP 415 "Unsupported Media Type" error.
15 Answers
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jQuery same click event for multiple elements
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– Taufik Nur Rahmanda
Mar 23 '17 at 2:05
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How to deal with “data of class uneval” error from ggplot2?
...ying to overlay a new line to a existing ggplot I am getting the following error:
3 Answers
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How can I get a file's size in C? [duplicate]
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Please note that I have omitted error checking in the interest of clarity.
– Greg Hewgill
Oct 26 '08 at 21:23
19
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Bash script error [: !=: unary operator expected
In my script I am trying to error check if the first and only argument is equal to -v but it is an optional argument. I use an if statement but I keep getting the unary operator expected error.
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