Looping through the content of a file in Bash?
In Bash, you can loop through the content of a file using a
whileloop and the
while IFS= read -r line; do echo "$line" done < file.txt
Let's break down the syntax:
whileloop is used to iterate through the file
readdisables interpreting backslashes. Without this option, backslashes will be treated as escape characters.
readprevents leading/trailing whitespace from being trimmed.
$lineis the variable that holds the current line being read.
echocommand outputs the current line.
You can replace
echo "$line" with whatever command you want to run on each line of the file. For example, if you want to count the number of lines in the file, you can use this:
count=0 while IFS= read -r line; do ((count++)) done < file.txt echo "Number of lines: $count"
This will output the number of lines in the file.
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