For each iteration of thewhile loop, the read command reads that particular line of the file and assigns it to the bash shell variable $line. The loop runs till the number of lines in the file. After reading the
Reading File Line by Line with Bash while Loop To read a file line by line in Bash scripting the while loop can be used. Let’s take the filename as input from the user and print it through a Bash script. #!/bin/bash set -e line_number=1 echo "Enter the File Name" read filen...
While running bash scripts, you'll come across times when you want to run tasks repeatedly such as printing the value of a variable in a specific pattern multiple times. In this tutorial, I'm going to walk you through the following: The syntax of the while loop Multiple examples of the ...
In the script, thecatcommand is executed using command substitution. The output ofcat file1.txtreplaces the command, and theforloop iterates through the command’s output and prints it to the standard output using theprintfcommand. #!/bin/bashprintf"Program prints the lines of a file\n\n...
1. Create a script and paste the following lines: #!/bin/bash count=1 until (( count > 10 )) do if (( count % 2 == 0 )) then echo "Even number: $count" else echo "Odd number: $count" fi if (( count == 5 ))
Empty Lines in Linux Empty lines are not ignored when youloopthrough the file content. To demonstrate this I have created a sample file with the below content. There are 4 lines and few empty lines, leading whitespace, trailing white space, tab characters in line 2, and some escape character...
Syntax FOR /F ["options"] %%parameter IN ('command_to_process') DO command Key options: delims=xxx The delimiter character(s) default: a Space, TAB, comma, Equals or Semicolon. skip=n A number of lines to skip at the beginning. Default = 0. eol=; Character at the start of each...
unzip ${dirname}/$(echo ${file##/*/}) done In this example find command returns the list of files, from which each file will be processed through a loop. For each item, it creates the directory with the name of the zip file, and copies the zip file to the newly created directory...
Create a bash file named ‘for_list5.sh’ with the following code. Here, ‘*’ symbol is used to read all string values of the array. The first for loop is used to display array values in multiple lines and the second for loop is used to display array values in a single line. #...
Pre-training, training and testing our model through the bash scripts: sh run.sh You can also add or change parameters in run.sh (More parameters are listed in init_parameter.py) Results It should be noted that the experimental results may be different because of the randomness of clusterin...