Unix
Calling Unix command from Java
How do I execute the Unix grep program to search for patt开发者_Go百科erns in a set of files by calling that command from inside a Java program?You can use Runtime.exec[详细]
2023-04-12 09:40 分类：问答Sed program - deleted strings reappearing?
I\'m stumped. I have an HTML file that I\'m trying to convert to plain text and I\'m using sed to clean it up. I understand that sed works on the \'stream\' and works one line at a time, but there are[详细]
2023-04-12 06:32 分类：问答In a *nix environment, how would I group columns together?
I have the following text file: A,B,C A,B,C A,B,C Is there a way, using standard *nix tools (cut, grep, awk, sed, etc), to process such a text file and get the following outp开发者_StackOverflowut:[详细]
2023-04-12 06:29 分类：问答Having trouble with awk
I am trying to assign a variable to an awk statement. I am getting an error. Here is the code: f开发者_如何学Goor i in `checksums.txt` do[详细]
2023-04-12 05:24 分类：问答Multitasking on Linux with multiple CPUs
I feel my question is quite basic, but I couldn\'t find any related SO question. I need to run a program a few thousands of times (different input each time), and currently it is done by a shell scri[详细]
2023-04-12 03:26 分类：问答How to get directories in $PATH as a list or array?
Is there a C function call in linux that helps me get all the files in the directories of $PATH as a list or an array? Or should we parse through the $PATH variable manua开发者_如何学Clly to get them?[详细]
2023-04-12 02:58 分类：问答Bash Loop Program
This is not a homework by anyway to start with this part of a program I\'m working on. what I\'m trying to do is to print this shape using bash loops.[详细]
2023-04-12 02:04 分类：问答execute one-line ssh command with variable from local environment
Let\'s pretend that in the current shell, I have a variable. $ echo $MY_VAR $ 2 What I want is to pass the value of this variable to an argument of a command I\'m executing through ssh, like:[详细]
2023-04-12 00:25 分类：问答How to view compressed file by decompressing only partially?
I have compressed file, which I want to view using something like \"less\" utility in unix. \"less\" provides preprocessing option, through which I can decompress the file. But, what if I want to part[详细]
2023-04-12 00:08 分类：问答How to break lines before one column?
I want to insert return before one column of multiple lines, so I select the characters of this column with Ctrl+V in normal mode, then type I, Vim enters insert mode. After typing Enter key, and pres[详细]
2023-04-11 23:30 分类：问答
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