I have a file with contents as: Hi welcome ! Chunk Start Line 1Line2! Chunk Start Line 1 Line 2 Line 3 ! Chunk Start Line 1Line 2Line 3Line 1Line 2Line 3Line 4Line 5Line 1Line 2Line 3Line 4 Now, everything beginning with “! Chunk Start” and before the next “! Chunk Start” is a chunk, i…
Tag: grep
Tshark custom grep
So my command is: So my output is: How can I get Apple_90:ea:8e + SSID=Broadcast and whats the logic behind the grep? Is it possible with grep? Considering that: Apple_90:ea:8e and Broadcast will always change! Answer The grep option -o says “only return what was matched, not the whole line” and -…
How to delete prefix, suffix in a string matching a pattern and split on a character using sed?
I have the following string, which is the output of a cassandra query in bash I want to split this string so as to remove the string in the beginning till the last + symbol and then remove the tail end, which is (XYZ rows). So, the string becomes A|1|a B|2|b C|3|c D|4|d. Now, I want to split this string
grep mac address – 2 consecutive lines
My file consists of scan results. Each result can have 4-20 lines I want to filter only MAC addresses for Successful (Passed scans) My file: I would like to extract list of mac addressees that Passed scans. So in example if line contains “PASSED” and next line or 2 contain mac address … prin…
Find command with size and time and sorted by timestamp
I have the following folder setup for example I need to recursively list them with file size, modification time and sorted by modification time recent first. I have tried the below without size… Any pointers? Answer %T+ – modification time (and date) %s – size %p – path of file
Grep across multiple lines but returning all matches
I’m trying to grep against a windows file under cygwin or linux, to find all MySQL statements between a table lock and table unlock in a mysql log. I can use awk, but I need the line numbers from the original file I don’t see why -Pzo isn’t working in cygwin Effectively I’m looking for…
Piping To Grep Is Giving Too Many Results
I’m trying to check whether a particular service is running via a Linux terminal, and the following command doesn’t seem to be filtering the results as expected. Not sure what I’m doing wrong… This produces several lines of output, including, for example, I’m not sure why this is…
Regular expression to search column in text file
I am having trouble getting a regular expression that will search for an input term in the specified column. If the term is found in that column, then it needs to output that whole line. These are my variables: the text file is in this format with a space being the field seperator, with many contact entries: …
Get list of files that contain given text within directory given by pattern
I want to get a list of files that contain a given text within my file-system. Furthermore only files should be considdered that are located in a directoy given by a pattern. So let´s say I have a number of directories called myDir within my filelsystem as shown here: Now I want to get all the files within th…
grep usage for date in a text file
I have some data in a text file like below: Now i want to fetch CPU Usage/Timestamp pair at a time like below: And, Memory Usage/Timestamp pair at a time like below: I tried grep -i “CPU Usage” testFile.txt | grep -i “Timestamp”, but it fetched the complete data irrespective of CPU Usa…