How do I use grep to find two strings?

How do I grep for multiple patterns?

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Use single quotes in the pattern: grep ‘pattern*’ file1 file2.
Next use extended regular expressions: egrep ‘pattern1|pattern2’ *. py.
Finally, try on older Unix shells/oses: grep -e pattern1 -e pattern2 *. pl.
Another option to grep two strings: grep ‘word1\|word2’ input.

How do you search for multiple strings in a file in Python?

Steps:

Open a file.
Set variables index and flag to zero.
Run a loop through the file line by line.
In that loop check condition using the ‘in’ operator for string present in line or not. If found flag to 0.
After loop again check condition for the flag is set or not.
Close a file.

How do I check if a string contains multiple words in Python?

You can use any : a_string = “A string is more than its parts!” matches = [“more”, “wholesome”, “milk”] if any(x in a_string for x in matches): Similarly to check if all the strings from the list are found, use all instead of any .

How do I combine two grep commands in Linux?

Two possibilities:

Group them: { grep ‘substring1’ file1.txt grep ‘substring2’ file2.txt } > outfile.txt.
Use the appending redirection operator >> for the second redirection: grep ‘substring1’ file1.txt > outfile.txt grep ‘substring2’ file2.txt >> outfile.txt.

How do you check if a list of strings is in a string Python?

Use the filter() Function to Get a Specific String in a Python List. The filter() function filters the given iterable with the help of a function that checks whether each element satisfies some condition or not. It returns an iterator that applies the check for each of the elements in the iterable.

How do I check if two strings match in Python?

In python programming we can check whether strings are equal or not using the “==” or by using the “. __eq__” function. Example: s1 = ‘String’ s2 = ‘String’ s3 = ‘string’ # case sensitive equals check if s1 == s2: print(‘s1 and s2 are equal.

How do you read multiple strings in Python?

How can I take multiple inputs in my program?

Using split(): The split() function is widely used to take multiple inputs In Python from the user.
string.split(separator, maxsplit)
Using map(): The map() is another way of taking inputs from the user.
map(func, ite)

How do you grep 5 lines before and after?

To also show you the lines before your matches, you can add -B to your grep. The -B 4 tells grep to also show the 4 lines before the match. Alternatively, to show the log lines that match after the keyword, use the -A parameter. In this example, it will tell grep to also show the 2 lines after the match.

How do I check if two strings are the same in Python?

String Comparison using == in Python The == function compares the values of two strings and returns if they are equal or not. If the strings are equal, it returns True, otherwise it returns False.