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How to check if a variable is set in Bash?
...ken from. One construct I use in almost any script I write is : ${FOOBAR:=/etc/foobar.conf} to set a default value for a variable if it is unset or null.
– Jens
Mar 10 '15 at 11:08
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How to redirect output of an already running process [duplicate]
...at > foo1 in one session and test that data from stdin is copied to the file. Then in another session I redirect the output.
Firstly find the PID of the process:
$ ps aux | grep cat
rjc 6760 0.0 0.0 1580 376 pts/5 S+ 15:31 0:00 cat
Now check the file handles it has open:
$ ls -l /pro...
Ant: How to execute a command for each file in directory?
I want to execute a command from an Ant buildfile, for each file in a directory.
I am looking for a platform-independent solution.
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How do I show the changes which have been staged?
I staged a few changes to be committed; how can I see the diff of all files which are staged for the next commit? I'm aware of git status , but I'd like to see the actual diffs - not just the names of files which are staged.
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C# nullable string error
...> and the ? suffix are for value types such as Int32, Double, DateTime, etc.
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How do I undo the most recent local commits in Git?
I accidentally committed the wrong files to Git , but I haven't pushed the commit to the server yet.
86 Answers
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Resolve build errors due to circular dependency amongst classes
...hich lead to circular dependencies between C++ classes in different header files (can happen also in the same file) . But fortunately(?) this doesn't happen often enough for me to remember the solution to this problem for the next time it happens again.
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How to convert .pfx file to keystore with private key?
I need to sign Android application ( .apk ).
I have .pfx file. I converted it to .cer file via Internet Explorer and then converted .cer to .keystore using keytool. Then I've tried to sign .apk with jarsigner but it says that .keystore doesn't content a private key.
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How to only get file name with Linux 'find'?
I'm using find to all files in directory, so I get a list of paths. However, I need only file names. i.e. I get ./dir1/dir2/file.txt and I want to get file.txt
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Java : How to determine the correct charset encoding of a stream
...nce to the following thread:
Java App : Unable to read iso-8859-1 encoded file correctly
15 Answers
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