bashvariablescopeinsidewhileloop

2013年5月31日 — Use echo statement to store and cat statement to retrieve. And the bash user must chown the directory or have read-write chmod access. #write to ...

2017年11月6日 — This answer solves the immediate issue of allowing i to survive past the end of the loop, but does not address the other issues still in the ...

Bash Variable scope - while loop while reading from a file. Cope sample1: test.sh i=0 echo Outside loop i = $i while do i=$(( $i + 1)) echo Inside loop ...

2022年9月4日 — Hello dear Reader,. Could you please help me understand why the variable COUNTER does not keep its value outside the while loop as seen in case ...

2019年7月30日 — When you run script file.ksh we will see following. Code: Outside loop i = 10 Inside loop i = 11 Inside ...

2011年4月13日 — Any variable you mess with in a pipe will go out of scope as soon as the pipe ends--meaning that if you really, really want to do something ...

2011年1月12日 — When you pipe into a while loop in Bash, it creates a subshell. When the subshell exits, all variables return to their previous values ...

2023年3月8日 — If you have the need to update a bash variable inside a loop that reads input from a command, the expected use of a pipe to achieve that fails.

2015年2月27日 — Obviously bash considers the 'global' scope (in which bash variables are by default) to be the scope of the sub-shell opened for the loop with ...

2018年8月21日 — while read myVariable; do. The value of myVariable is lost when leaving the loop. No, myVariable has the value it got from the last read .