# Performs the test-bucket number 1 for Product X. # (Actually, this is a sample shell script, # which invokes some system commands # to illustrate how to construct a Bash script) # # Notes: # 1) The environment variable TEST_VAR must be set # (as an example). # 2) To invoke ...
Run the script, this time passing your chosen name of a new directory as an argument: ./arg_dir.sh Test You may be wondering what happens if you run the script without supplying an argument at all. Try it and see; you should receive an error message that starts "usage: mkdir": Witho...
The script uses the command line and the bash command to quickly and easily gather information about the disk status. By running the script with the "sudo" command, it is possible to retrieve information about the disk space and usage even for running processes and files that may be owned ...
# 只给脚本拥有者读权限和执行权限 $ chmod u+rx script.sh 脚本的权限通常设为755(拥有者有所有权限,其他人有读和执行权限)或者700(只有拥有者可以执行)。 除了执行权限,脚本调用时,一般需要指定脚本的路径(比如path/script.sh)。如果将脚本放在环境变量$PATH指定的目录中,就不需要指定路径了。因为 Bash 会自...
Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...] Script description here. Available options: -h, --help Print this help and exit -v, --verbose Print script debug info -f, --flag Some flag description ...
USAGE EXAMPLE: cmdparser -l hello -f -- -somefile1 somefile2 HELP exit 0 } while [ -n "$1" ]; do case $1 in -h) help;shift 1;; # function help is called -f) opt_f=1;shift 1;; # variable opt_f is set -l) opt_l=$2;shift 2;; # -l takes an argument -> shift...
# to illustrate how to construct a Bash script) # # Notes: # 1) The environment variable TEST_VAR must be set # (as an example). # 2) To invoke this shell script and redirect standard # output and standard error to a file (such as ...
For example, to find a specific string, let's call it asdfg, in all php files under the /home directory, use a script like this: #!/bin/sh #avoid special characters like quotes and brackets STRING=asdfg for i in `find . -name "*.php"`; do { C=`grep -c --max-count=1 "$...
Name of the script: Main.sh Number of arguments passed: 0 All arguments passed: Exit status of the last command: 0 Explanation: In the exercise above, $0 represents the name of the script itself. $# represents the number of arguments passed to the script. ...
Copy and paste the following script: #!/bin/bash MyFile=cars.txt if [ -f "$MyFile" ]; then echo "$MyFile exists." else echo "$MyFile does not exist." fi Running the script results in the following output: 22. Check Inodes and Disk Usage ...