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 ...
Trim all white-space from string and truncate spacesThis 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....
Check if String starts with another String in Bash Read more → Get random number between 1 and 100 in Bash Read more → Using uuid Command Use uuid to generate a random string in Bash. Use uuid Command 1 2 3 cat /proc/sys/kernel/random/uuid | sed 's/[-]//g' | head -c...
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...
OPTIONS In addition to the single-character shell options documented in the description of the set builtin command, bash inter- prets the following options when it is invoked: -c string If the -c option is present, then commands are read from string. If there are arguments after the string...
There are two ways to check for a partial value in a string (i.e., if a string contains a substring): Replace Characters With Asterisk Use the asterisk (*) symbol to replace characters in the specified substring. The asterisk is a wildcard character allowing users to perform partial matchi...
So let's start with the first one. 1. The = (equal to) operator The = operator is to compare two strings and to find out if they hold the same set of characters (string) or not. For your reference, here, I compared two strings using the = operator: #!/bin/bash str1="apple...
In addition to the single-character shell options docu mented in the description of the set builtin command, bash interprets the following flags when it is invoked: -c string If the -c flag is present, then commands are read from string. If there are arguments after the string, they...
/bin/bash #Declare bash string variable BASH_VAR="Bash Script" # echo variable BASH_VAR echo $BASH_VAR #when meta character such us "$" is escaped with "\" it will be read literally echo \$BASH_VAR # backslash has also special meaning and it can be suppressed with yet another "\"...
chmod +x character.sh 5. Execute the script: ./character.sh The script outputs the character type entered after matching it against the specified conditions. Note:Learn how to compare strings using a Bash script with our guideBash string comparison. ...