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Validating parameters to a Bash script
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Use '-z' to test for empty strings and '-d to check for directories.
if [[ -z "$@" ]]; then
echo >&2 "You must supply an argument!"
exit 1
elif [[ ! -d "$@" ]]; then
echo >&2 "$@ is not a valid directory!"
exit 1
fi
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How to avoid type safety warnings with Hibernate HQL results?
...ve been added there since Java Persistence 2.0. One of them is createQuery(String, Class<T>) which returns TypedQuery<T>. You can use TypedQuery just as you did it with Query with that small difference that all operations are type safe now.
So, just change your code to smth like this:
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Make install, but not to default directories?
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The problem i have with --prefix is that if you run a strings on the resulting binary afterwards, you see that the path is stored inside. I don't know why this happends, but I certainly dont want my machine paths on binaries that I ship to other users.
– Er...
Unix's 'ls' sort by name
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Files being different only by a numerical string can be sorted on this number at the condition that it is preceded by a separator.
In this case, the following syntax can be used:
ls -x1 file | sort -t'<char>' -n -k2
Example:
ls -1 TRA*log | sort -t'_' -n -...
How to escape os.system() calls?
... Yes, list2cmdline conforms to Windows cmd.exe syntax (see the function docstring in the Python source code). shlex.quote conforms to Unix bourne shell syntax, however it isn't usually necessary since Unix has good support for directly passing arguments. Windows pretty much requires that you pass a ...
Replacing Pandas or Numpy Nan with a None to use with MysqlDB
...to use before inserting with Django to avoid the np.nan being converted to string "nan"
– shadi
May 11 '18 at 8:04
Use...
Output data from all columns in a dataframe in pandas [duplicate]
...orks quite well (prints the first 100 rows):
print paramdata.head(100).to_string()
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Visual Studio immediate window command for Clear All
...ic Sub ClearImmediateWindow()
Try
Dim vsWindowKindImmediateWindow As String _
= "{ECB7191A-597B-41F5-9843-03A4CF275DDE}"
Try
Dim obj As Object = System.Runtime.InteropServices.Marshal._
GetActiveObject("VisualStudio.DTE.10.0")
If obj IsNot ...
find -exec with multiple commands
...? this is failing: find ./* -exec grep -v 'COLD,' {} \; -exec egrep -i "my_string" {} \;
– rajeev
Jan 22 '13 at 16:08
53
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Celery Received unregistered task of type (run example)
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Voted your answer for this string please in other module invoke task!!!!!!!!. It helped.
– VolArt
Jan 14 '19 at 10:47
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