Checking for substring in bash using if else statement If you are familiar with theconditional statements in bash, you can use it to check if a string contains the substring in the following manner: if [[ $fullstring == *"$substr"* ]]; Simple example for checking substring The double br...
When this operator is used, the right string is considered as a regular expression. The period followed by an asterisk .* matches zero or more occurrences any character except a newline character. #!/bin/bash STR='GNU/Linux is an operating system' SUB='Linux' if [[ "$STR" =~ .*"$...
In this article, we will see how to check if output contains String in Bash using grep, Conditional Expressions, awk, sed commands with various options.
I have had so many instances where I wanted to check if a value was present in an array or not. You can probably iterate over all the array items and check it individually, but what if I give you the red pill? I have created an array in which there is a stringasdfand I want to...
Run Bash Script MyScript.sh 1 2 3 ./MyScript.sh Output 1 2 3 No match found In the above example, grep searched for the pattern pattern in the file dummy.txt. Here, the -c option counts the number of matches, and the result is checked with an if statement. If the count...
$ cat validate_date.sh #!/bin/bash INPUT_DT="$1" if date -d "$INPUT_DT" "+%Y-%m-%d" >/dev/null 2>&1; then echo "The input $INPUT_DT is a valid date string in the yyyy-mm-dd format." else echo "The input $INPUT_DT is NOT a valid date string in the yyyy-mm-dd fo...
The commandcmk -dretrieves and displays the output from a host’s Checkmk agent. Withcmk -dagent data is retrieved in the same way as with the monitoring. It is neither validated nor processed. Thus the data showed exactly matches the data that is turned over to the Agent Controller (wh...
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc. cast check coerce coercion finite integer is isnan is-nan is-num is-number isnumber isfinite istype View more jonschlinkert ...
Returns true if a string has an extglob. bash braces check exec expression extglob glob globbing globstar is match matches pattern regex View more jonschlinkert •2.1.1•8 years ago•2,294dependents•MITpublished version2.1.1,8 years ago2294dependentslicensed under $MIT ...
/// This is used for checking if the dashboard has been modified. pub hash: String, To ensure proper usage of this new field, let's check for its implementation: #!/bin/bash # Search for usage of the hash field in the Dashboard struct rg --type rust 'Dashboard.*hash' -g '!src...