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 you’re making Bash programs for you or for others to use one way you can get user input is to specify arguments for users to provide to your program, as we discussed in the previous section. You could also ask users to type in a string on the command line by temporarily stopping ...
This is an alternative to sed, awk, perl and other tools. The function below works by abusing word splitting to create a new string without leading/trailing white-space and with truncated spaces.Example Function:# shellcheck disable=SC2086,SC2048 trim_all() { # Usage: trim_all " example ...
Check if string starts with sub-stringif [[ $var == sub_string* ]]; then printf '%s\n' "var starts with sub_string." fi # Inverse (var does not start with sub_string). if [[ $var != sub_string* ]]; then printf '%s\n' "var does not start with sub_string." fi...
It then checks if the entered password ('$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. ...
python -c"import os; print [x for x in dir(os) if x.startswith('r')]" 输出结果为: ['read', 'readlink', 'remove', 'removedirs', 'rename', 'renames', 'rmdir'] 设你有一个 Python 模块(文件)mymodule.py,内容如下: # mymodule.py ...
An additional binary operator, =~, is available, with the same precedence as == and !=. When it is used, the string to the right of the operator is considered an extended regular expression and matched accordingly (as in regex(3)). The return value is 0 if the string matches the ...
In this example we declare simple bash variable and print it on the screen ( stdout ) with echo command. #!/bin/bash STRING="HELLO WORLD!!!" echo $STRING 1. 2. 3. Your backup script and variables: #!/bin/bash OF=myhome_directory_$(date +%Y%m%d).tar.gz ...
-n: This option is used to display line numbers along with the matching lines. "word": This is the string pattern to search for. In this case, it's "word". filename.txt: This is the name of the file in which the search will be performed. ...
print 'Yes, the string starts with "Swa"' if 'a' in name: print 'Yes, it contains the string "a"' if name.find('war') != -1: print 'Yes, it contains the string "war"' delimiter = '_*_' mylist = ['Brazil', 'Russia', 'India', 'China'] ...