Do not forget to use quotation marks whenever there is a space or a symbol in a search pattern. Here is a comparison of the results without and with the -x operator in our grep command:. Sometimes, you only need to see the names of the files that contain a word or string of characters and exclude the actual lines. To print only the filenames that match your search, use the -l operator:. The output shows the exact filenames that contain phoenix in the current directory but does not print the lines with the corresponding word:.
As a reminder, use the recursive search operator -r to include all subdirectories in your search. When grep prints results with many matches, it comes handy to see the line numbers. Append the -n operator to any grep command to show the line numbers. We will search for Phoenix in the current directory, show two lines before and after the matches along with their line numbers.
Individual files, such as log files, can contain many matches for grep search patterns. Limit the number of lines in the grep output by adding the -m option and a number to the command.
In this case, the terminal prints the first two matches it finds in the sample file. If you do not specify a file and search all files in a directory, the output prints the first two results from every file along with the filename that contains the matches. The grep command is highly flexible with many useful operators and options. By combining grep commands, you can get powerful results and find the text hiding in thousands of files. What is the grep Command? Was this article helpful?
Goran Jevtic. Working with multiple departments and on various projects, he has developed an extraordinary understanding of cloud and virtualization technology trends and best practices.
Each zip file contains only one text file in it. I would like to search for a specific string in all the text files in all the zip files. I tried this which searches for any text file in the zip file that contains the string "ORA-" but it didn't work. It is in general not possible to search for content within a compressed file without uncompressing it one way or another. Since zipgrep is only a shellscript, wrapping unzip and egrep itself, you might just as well do it manually:.
This way you are only decompressing to stdout ie. To make it work across multiple files put it in a loop:. AVFS provides read-only access to most common archive file formats. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses.
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