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How to check if a variable is set in Bash?
...e null | assign word |
| ${parameter:?word} | substitute parameter | error, exit | error, exit |
| ${parameter?word} | substitute parameter | substitute null | error, exit |
| ${parameter:+word} | substitute word | substitute null | substitute null |
| ${parameter+word} | ...
Why am I seeing “TypeError: string indices must be integers”?
...gt; mystring = 'helloworld'
>>> print mystring['stringindex']
TypeError: string indices must be integers
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How to check if a Unix .tar.gz file is a valid file without uncompressing?
...the filesystem. If the tar file is corrupt, the process will abort with an error.
Example of failed tar ball test...
$ echo "this will not pass the test" > hello.tgz
$ tar -xvzf hello.tgz -O > /dev/null
gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error exit delayed from...
How to get the process ID to kill a nohup process?
...D of the last process executed). The 2 is the file descriptor for standard error (stderr) and 2>&1 tells the shell to route standard error output to the standard output (file descriptor 1). It requires &1 so that the shell knows it's a file descriptor in that context instead of just a fil...
127 Return code from $?
...
127 - command not found
example: $caat
The error message will
bash:
caat: command not found
now you check using echo $?
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Why does fatal error “LNK1104: cannot open file 'C:\Program.obj'” occur when I compile a C++ project
... your Linker is correct but your lib directory is set incorrectly the same error may come up. Try looking in Configuration Properties -> VC++ directories -> Library Directories to see if you set the library correctly. Sometimes the lib folder consists of a x86 and a x64 folder. You have to set...
HTTP POST Returns Error: 417 “Expectation Failed.”
...ontinue = false;
Some servers choke on that header and send back the 417 error you're seeing.
Give that a shot.
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Some projects cannot be imported because they already exist in the workspace error in Eclipse
...ject that me and my co-worker have been working on.. and keep getting this error after I select-- "import" then "import existing project" then click archive file, and then I click next, and this error comes up:
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Error starting jboss server
... as always install and test standard tools which I use, and now I get this error like never before when I tried to start Jboss 5 from eclipse, its quite big exeption :
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Xcode gave strange newsstand-error when trying to submit an app
... the the Appstore. But when I click submit in Xcode 4.1 I get this strange error message:
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