Check if Command Exists in Bash Check if String Starts with Another String in Bash Get Random Number Between 1 and 100 in Bash Bash Get Absolute Path from Relative Path Bash Split String and Get Last ElementShare thisPrev Generate Random String in Bash Next Run String as Command in BashRelat...
Check if String Starts with Another String in Bash Read more → 6. Using sed with grep Command The sed (Stream Editor) is a powerful and versatile text processing tool that performs text transformations on an input stream (a file or input from a pipeline). Here, we will use sed for ...
if [[ ${arr[*]} == *sub_string* ]]; then printf '%s\n' "sub_string is in array." fiUsing a case statement:case "$var" in *sub_string*) # Do stuff ;; *sub_string2*) # Do more stuff ;; *) # Else ;; esacCheck if string starts with sub-stringif [[ $var == sub_...
if [[ ${arr[*]} == *sub_string* ]]; then printf '%s\n' "sub_string is in array." fiUsing a case statement:case "$var" in *sub_string*) # Do stuff ;; *sub_string2*) # Do more stuff ;; *) # Else ;; esacCheck if string starts with sub-stringif [[ $var == sub_...
Write a Bash script that takes a string as an argument and prints “how proper” if the string starts with a capital letter. Write a Bash script that takes one argument and prints “even” if the first argument is an even number or “odd” if the first argument is an odd number. ...
It then checks if the entered password ('$password') matches the correct password ('$correct_password') using an if statement with a string comparison ([[ ... ]]). If the passwords match, the script prints "Access granted" and exits the loop using the "break" statement. ...
If bash is started with the -c option, then $0 is set to the first argument after the string to be executed, if one is present. Oth erwise, it is set to the pathname used to invoke bash, as given by argument zero. _ Expands to the last argument to the previous com mand,...
Note:Learn how to compare strings using a Bash script with our guideBash string comparison. Conclusion This guide showed how to use the Bashcasestatement to simplify complex conditionals when working with multiple choices. Create different scripts to test patterns and process a command if a match ...
# Check if the string is empty if [ -z "$input_str" ]; then echo "The string is empty" else echo "The string is not empty" fi Output: The string is empty Explanation: In the exercise above, The variable 'input_str' is defined as an empty string. ...
python -c "import os; print [x for x in dir(os) if x.startswith('r')]" 1. 输出结果为: ['read', 'readlink', 'remove', 'removedirs', 'rename', 'renames', 'rmdir'] 1. 设你有一个 Python 模块(文件)mymodule.py,内容如下: ...