subshell
Python subprocess, subshells, and redirection
I want to use the magic of subshells and redirection with the python subprocess modu开发者_运维问答le, but it doesn\'t seem to work, complaining about unexpected tokens are the parenthesis.For example[详细]
2023-04-04 10:49 分类：问答Variables getting reset after the while read loop that reads from a pipeline
initiate () { read -p \"Location(s) to look for .bsp files in? \" loc find $loc -name \"*.bsp\" | while read[详细]
2023-04-02 09:06 分类：问答Bash: set array within braces in a while loop? (sub-shell problem)
I\'m having problems getting a variable \"${Error[*]}\", which is a regular indexe开发者_Go百科d array, to stay set from the time it\'s declared until it\'s checked. It seems to me that a sub-shell mu[详细]
2023-03-26 20:25 分类：问答why does redirect (<) not create a subshell
I wrote the following code var=0 cat $file | while read line do var=$line done echo $var Now as I understand it the pipe (|) will cause a sub shell to be created an therefore the variable var on li[详细]
2023-03-16 05:03 分类：问答Can a function be invoked in a bash subshell as background job?
Let\'s say I have a bash function Yadda() { # time-consuming开发者_如何学编程 processes that must take place sequentially[详细]
2023-03-03 12:59 分类：问答Bash bad substitution with subshell and substring
A contrived example...given FOO=\"/foo/bar/b开发者_JAVA技巧az\" this works (in bash) BAR=$(basename $FOO) # result is BAR=\"baz\"[详细]
2023-03-03 05:46 分类：问答How to set bash trap again in trap code?
I have a bash function that is called must be called by an EXIT trap after the first time that it is called. The function sets the trap again to fire as soon as the function exits.[详细]
2023-01-19 10:15 分类：问答How can I tell from a within a shell script if the shell that invoked it is an interactive shell?
I\'m trying to set up a shell script that will start a screen session (or rejoin an existing one) only if it is invoked from an interactive shell. The solution I have seen is to check if $- contains t[详细]
2023-01-07 02:09 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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