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Understanding keystore, certificates and alias
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The keystore file generated by Keytool stores pairs of private and public keys. Each pair or entry stored in the keystore is refered by a unique alias. In brief:
Keystore entry = private + public key
pair = identified by an alias
The keystore protects each private key with its in...
How to convert timestamps to dates in Bash?
I need a shell command or script that converts a Unix timestamp to a date. The input can come either from the first parameter or from stdin, allowing for the following usage patterns:
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How to use 'cp' command to exclude a specific directory?
...xcept some files in a specific sub-directory.
I have noticed that cp command didn't have the --exclude option.
So, how can I achieve this?
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Difference between subprocess.Popen and os.system
What is the difference between subprocess.Popen() and os.system() ?
5 Answers
5
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How to pass all arguments passed to my bash script to a function of mine? [duplicate]
Let's say I have defined a function abc() that will handle the logic related to analyzing the arguments passed to my script.
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Can I export a variable to the environment from a bash script without sourcing it?
...to have the script, rather than setting an environment variable, print commands that will set the environment variable:
$ cat set-vars2.sh
#!/bin/bash
echo export FOO=BAR
$ eval "$(./set-vars2.sh)"
$ echo "$FOO"
BAR
A third approach is to have a script that sets your environment variable(s) inter...
Parse JSON in TSQL
...se CLR. It is as simple as that, unless you have a huge masochistic streak and want to write a JSON parser in SQL
Normally, folk ask for JSON output from the DB and there are examples on the internet. But into a DB?
share
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Why is the asterisk before the variable name, rather than after the type?
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perhaps but I wouldn't mix and match types in one declaration.
– BobbyShaftoe
Dec 30 '08 at 3:13
17
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MySQL error: key specification without a key length
...r BLOB types such as TINYBLOB, MEDIUMBLOB, LONGBLOB, TINYTEXT, MEDIUMTEXT, and LONGTEXT that you try to make a primary key or index. With full BLOB or TEXT without the length value, MySQL is unable to guarantee the uniqueness of the column as it’s of variable and dynamic size. So, when using BLOB ...
How do I change the cursor between Normal and Insert modes in Vim?
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A popular option to indicate switching to and from Insert mode is
toggling the cursorline option, which is responsible for whether
the current screen line is highlighted (see :help cursorline):
:autocmd InsertEnter,InsertLeave * set cul!
or, alternatively:
:autocmd ...