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Unix command to prepend text to a file
...form the output. The - means standard input, which is provide via the pipe from echo.
echo -e "to be prepended \n another line" | cat - text.txt
To rewrite the file a temporary file is required as cannot pipe back into the input file.
echo "to be prepended" | cat - text.txt > text.txt.tmp
mv ...
stop all instances of node.js server
...ws. Does that make killall node an invalid command because I cannot use it from command line.
– Kiran Ambati
Feb 9 '13 at 20:10
3
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git mv and only change case of directory
...history at all. You have to be careful if you do this as the commit hashes from then on will be different and others will have to rebase or re-merge their work with that recent past of the branch.
This is related to correcting the name of a file: Is git not case sensitive?
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Keep CMD open after BAT file executes
...
When the .bat file is started not from within the command line (e.g. double-clicking).
echo The echoed text
@pause
echo The echoed text
pause
echo The echoed text
cmd /k
echo The echoed text & pause
...
How can I pad a String in Java?
...ue holds the String we want to pad
String value = "123";
Substring start from the value length char index until end length of padded:
String padded="00000000".substring(value.length()) + value;
// now padded is "00000123"
More precise
pad right:
String padded = value + ("ABCDEFGH".substring...
Does Android support near real time push notification?
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GTalk is removed from the SDK since 1.0 (iirc).
– MrSnowflake
Mar 22 '10 at 21:45
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What is the difference between And and AndAlso in VB.NET?
... ' bla bla
End If
This one does not throw an exception.
So if you come from the C# world, you should use AndAlso like you would use &&.
More info here: http://www.panopticoncentral.net/2003/08/18/the-ballad-of-andalso-and-orelse/
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Simple regular expression for a decimal with a precision of 2
...t could be wrong, but you don't actually know if 1.7 is 1.70 or any number from 1.70 to 1.74.
– paxdiablo
Nov 21 '08 at 9:17
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How does variable assignment work in JavaScript?
...then follows with a list of dictionaries, hash, hash tables, and hash maps from various programming languages. The same page describes object property references as hash table lookups. So objects are everything like a 'hash' table. This does not nullify the other useful information, but Chris Ll...