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Find the files existing in one directory but not in the other [closed]
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390
votes
diff -r dir1 dir2 | grep dir1 | awk '{print $4}' > difference1.txt
Expla...
Efficient SQL test query or validation query that will work across all (or most) databases
...ir SQL connections for idleness. For example, the JDBC pooling library c3p0 has a property called preferredTestQuery , which gets executed on the connection at configured intervals. Similarly, Apache Commons DBCP has validationQuery .
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UIBarButtonItem with custom image and no border
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answered Apr 21 '10 at 8:47
VladimirVladimir
165k3535 gold badges377377 silver badges309309 bronze badges
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Copy rows from one Datatable to another DataTable?
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260
foreach (DataRow dr in dataTable1.Rows) {
if (/* some condition */)
dataTable2.Rows....
Numpy `logical_or` for more than two arguments
...ith a scalar instead of an array. So:
>>> np.any((x, y, z), axis=0)
array([ True, True, True, False], dtype=bool)
As you might expect, logical_and is similar—you can chain it, np.reduce it, functools.reduce it, or substitute all with an explicit axis.
What about other operations,...
What is the difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim?
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answered Sep 23 '10 at 7:24
DrAlDrAl
61.7k1010 gold badges9595 silver badges101101 bronze badges
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Remove duplicate elements from array in Ruby
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edited May 20 at 4:57
the Tin Man
147k3131 gold badges192192 silver badges272272 bronze badges
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PHP date() format when inserting into datetime in MySQL
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702
The problem is that you're using 'M' and 'D', which are a textual representations, MySQL is exp...
How to create a bash script to check the SSH connection?
...h -q user@downhost exit
$ echo $?
255
$ ssh -q user@uphost exit
$ echo $?
0
EDIT: Another approach would be to use nmap (you won't need to have keys or login-stuff):
$ a=`nmap uphost -PN -p ssh | grep open`
$ b=`nmap downhost -PN -p ssh | grep open`
$ echo $a
22/tcp open ssh
$ echo $b
(empty st...
How to convert string to Title Case in Python?
...eded).
– Andrew Clark
Dec 1 '11 at 20:10
18
For the record, a neater way to do the last CamelCase...