For example: echo "Hello $1" 1. Run: ./script.sh Wan 1. It printHello Wan. Example Create a empty project init-js.sh echo "Initializing JS project at $(pwd)" git init npm init -y # create package.json with all the defaults mkdir src touch src/index.js code . # open src/inde...
$@: this contains all the input arguments $#: the number of arguments passed to the script $0: the name of the script itself Let’s further explain with an example: $ ./example.sh arg1 arg2 arg3 Here, we can use the various types of special variables. The special parameter$@represent...
done #结束for循环 echo"FILE EXTENSION = ${EXTENSION}"echo"SEARCH PATH = ${SEARCHPATH}"echo"DEFAULT = ${DEFAULT}"echo"Number files in SEARCH PATH with EXTENSION:"$(ls-1"${SEARCHPATH}"/*."${EXTENSION}" | wc -l) if [[ -n $1 ]]; then echo "The non option arguments are:" $@...
trap cleanup SIGINT SIGTERM ERR EXIT script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P) usage() { cat <<EOF Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...] Script description here. Available options: -h, ...
2. Changing Command-Line Arguments Command-line arguments are values passed to a script or command when it’s executed. In Bash, these arguments are accessible through the special variables $1, $2, $3, up to $9. In this case, $1 represents the first argument, $2 represents the second...
# This program will only work with bash(1) # An similar programusingthe tcsh(1) script language can be found #asparse.tcsh # Example input and output (from the bash prompt): # ./parse.bash-a par1'another arg'--c-long'wow!*\?'-cmore-b"very long" ...
Looking for beginner-friendly bash script example? Learn how to automate your tasks and simplify your workflow with ease.
20天学会bash shell script. (二)shell 算数表达式 语法格式: expr oprand1 math-operator op2 算数运算符: +,- 加,减 *, / 乘,处 % 取模 [linux@zeng bin]$ cat math.sh #!/bin/bash # #This shell script. about shell arithmetic. expr 4 + 1 expr 5 - 1 expr 20 / 4 expr 10 % 3 ...
A common task in shell scripting is to parse command line arguments to your script. Bash provides the getopts built-in function to do just that. This tutorial explains how to use the getopts built-in function to parse arguments and options to a bash scri
echo -e "Example: ${BOLD}$SCRIPT -a foo -b man -c chu -d bar file.ext${NORM}"\\n exit 1 } #Check the number of arguments. If none are passed, print help and exit. NUMARGS=$# echo -e \\n"Number of arguments: $NUMARGS" ...