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How to check if a process id (PID) exists
In a bash script, I want to do the following (in pseudo-code):
10 Answers
10
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How to find the nearest parent of a Git branch?
Let's say I have the following local repository with a commit tree like this:
20 Answers
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What does “export” do in shell programming? [duplicate]
...me.
If a variable name is followed by =word, the value of the variable is set to word.
export returns an exit status of 0 unless an invalid option is encountered, one of the names is not a valid shell variable name, or -f is supplied with a name that is not a function.
You can also set variables a...
List of ANSI color escape sequences
...SI escape sequences you're looking for are the Select Graphic Rendition subset. All of these have the form
\033[XXXm
where XXX is a series of semicolon-separated parameters.
To say, make text red, bold, and underlined (we'll discuss many other options below) in C you might write:
printf("\033[31;1;...
Difference between method and function in Scala
...f confusion when people try to learn the language.
– Seth Tisue
May 20 '10 at 22:37
4
@Seth I kno...
Convert integer into its character equivalent, where 0 => a, 1 => b, etc
...to convert an integer into its character equivalent based on the alphabet. For example:
12 Answers
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What is the difference between char array and char pointer in C?
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why i can set char *name; name="123"; but can do the same with int type? And after using %c to print name , the output is unreadable string: �?
– TomSawyer
Apr 23 at 19:52
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分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...考虑下面的这么几个情况：
1）容灾：数据不丢、结点的Failover
2）数据的一致性：事务处理
3）性能：吞吐量 、 响应时间
前面说过，要解决数据不丢，只能通过数据冗余的方法，就算是数据分区，每个区也需要进行数据冗余...
High performance fuzzy string comparison in Python, use Levenshtein or difflib [closed]
...00 word medical dictionary. I am more concern about the time complexity/performance.
2 Answers
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Bash tool to get nth line from a file
...consolidation of the proposed solutions with included run times for each.
Set Up
I have a 3.261 gigabyte ASCII text data file with one key-value pair per row. The file contains 3,339,550,320 rows in total and defies opening in any editor I have tried, including my go-to Vim. I need to subset this ...