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- What is the meaning of IFS=$\\n in bash scripting?
At the beginning of a bash shell script is the following line: IFS=$'\\n' What is the meaning behind this collection of symbols?
- shell - Understanding IFS - Unix Linux Stack Exchange
The following few threads on this site and StackOverflow were helpful for understanding how IFS works: What is IFS in context of for looping? How to loop over the lines of a file Bash, read line by
- What is the IFS variable? - Unix Linux Stack Exchange
I was reading this Q amp;A: How to loop over the lines of a file? What is the IFS variable? And what is its usage in the context of for-loops?
- Understanding IFS= read -r line - Unix Linux Stack Exchange
Using IFS= LC_ALL=C read -r line works around it there Using var=value cmd syntax makes sure IFS LC_ALL are only set differently for the duration of that cmd command History note The read builtin was introduced by the Bourne shell and was already to read words, not lines There are a few important differences with modern POSIX shells
- \n in `IFS=$\n is a variable? - Unix Linux Stack Exchange
You can however use: eval "$(printf 'IFS="\n"')" Which works because the output of printf ends in a " character, not a newline Now, for completeness, in the rc shell and derivatives (like es or akanga), $'\n' is indeed the expansion of that \n variable (a variable whose name is the sequence of two characters \ and n)
- bash - Can IFS (Internal Field Separator) function as a single . . .
Parsing an array using IFS with non-whites space values creates empty elements Even using tr -s to shrink multiple delims to a single delim isn't enough An example may explain the issue more clea
- understanding the default value of IFS - Unix Linux Stack Exchange
Here if the expansion contains any IFS characters, then it split into different 'words' before the command is processed Effectively this means that these characters split the substituted text into different arguments (including the name of the command if the variable is specified first)
- Why is `while IFS= read` used so often, instead of `IFS=; while read. . `?
The IFS= read -r line sets the environment variable IFS (to an empty value) specifically for the execution of read This is an instance of the general simple command syntax: a (possibly empty) sequence of variable assignments followed by a command name and its arguments (also, you can throw in redirections at any point)
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