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How can I check if a directory exists in a Bash shell script?
What command can be used to check if a directory exists or not, within a Bash shell script?
35 Answers
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How to prevent a background process from being stopped after closing SSH client in Linux
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Log in and do "kill <pid>". Use "pidof" if you don't know the pid.
– JesperE
Jul 13 '10 at 18:01
33
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How to send a simple string between two programs using pipes?
... will vanish when the last process closes it.
A named pipe, also called a FIFO for its behavior, can be used to connect two unrelated processes and exists independently of the processes; meaning it can exist even if no one is using it. A FIFO is created using the mkfifo() library function.
Example
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static linking only some libraries
How can I statically link only a some specific libraries to my binary when linking with GCC?
8 Answers
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Resolve Type from Class Name in a Different Assembly
....Domain.Model." + myClassName + ", AssemblyName");
To avoid ambiguity or if the assembly is located in the GAC, you should provide a fully qualified assembly name like such:
Type.GetType("System.String, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089");
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Difference between signed / unsigned char [duplicate]
So I know that the difference between a signed int and unsigned int is that a bit is used to signify if the number if positive or negative, but how does this apply to a char ? How can a character be positive or negative?
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How to find the statistical mode?
...erate & find the mode of a 10M-integer vector in about half a second.
If your data set might have multiple modes, the above solution takes the same approach as which.max, and returns the first-appearing value of the set of modes. To return all modes, use this variant (from @digEmAll in the com...
Best way to do Version Control for MS Excel
...after major changes. Because all the modules are text files, the standard diff-style commands in BZR work for my sources except the Excel file itself.
I've setup a directory for my BZR repository, X:\Data\MySheet. In the repo are MySheet.xls and one .vba file for each of my modules (ie: Module1Macr...
unix - head AND tail of file
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You can simply:
(head; tail) < file.txt
And if you need to uses pipes for some reason then like this:
cat file.txt | (head; tail)
Note: will print duplicated lines if number of lines in file.txt is smaller than default lines of head + default lines of tail.
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What happens when there's insufficient memory to throw an OutOfMemoryError?
...dvance.
The Structure of the JVM, Chapter 3, section 3.5.2 states:
If Java virtual machine stacks can be dynamically expanded, and expansion is attempted but insufficient memory can be made available
to effect the expansion, or if insufficient memory can be made
available to create the i...