![]() ![]() Otherwise, xargs just tacks the results of find to the END of all the rest of the commands you give it (which doesn't help much if you want grep to search inside a file, which is usually specified last on the command-line). It's essentially doing the same thing as the used within the find statement itself to state "the line of text that this returned". This grep command tutorial is not about the theory of UNIX grep. type f -name "*.html" -print0|xargs -0 -I GRRRR grep "" GRRR One of the popular examples of the grep command is to find empty files and directories in Unix. Here, the name FILENAME can actually be anything, but it needs to match bothįind. type f -name "*.html" -print0|xargs -0 -I FILENAME grep "" FILENAME type f -name "*.html" -print|xargs -I FILENAME grep "" FILENAMEĮven better, if the filenames have spaces in them, you can either quote "FILENAME" or pass a null-terminated (instead of newline-terminated) result from find to xargs, and then have xargs strip those out itself:įind. It has fewer features than grep, though 99% of my searches are suited perfectly by replacing all instances of grep with ack.īesides the other answers given, I also suggest this construct:įind. Sudo apt-get install grep Man grep ls echo text > filename grep technical file grep l my file grep l my. Together, the find-exec command combination gives you endless possibilities for doing things in the Linux command line.If this is going to be a common search utility you're going to utilize, you may want to take a look at ack, which combines both the find and the grep together into this functionality that you're looking for. ![]() The examples I shared here are just a glimpse. The exec command gives you the ability to work on the result of the find command. The basic syntax to execute find with exec is as follows: find -exec \ įind is an already powerful command for searching files based on a number of criteria. Using exec command with the output of find command You can use what’s known as a recursive search to cover entire directories, subdirectories. grep -c repairs this problem, it count start of each line. Grep can do much more than just search the contents of a specific file. new line char at the end of last line, is not mandatory. wc -l have some problem, it counts new line characters, not number of lines. Here are some examples of find exec command combination. The exec command gives you the ability to work on those results. grep supports -c option, that counts how manay string is found. 6 min read How to Use the find Command With exec Find works on searching files based on a number of criteria. This tutorial will focus on combining find and exec commands. using grep something & wc -l has no sense. There is already a detailed article on xargs command. You have two ways to execute other commands on the result of the find command: You cannot just pipe redirect the find command output to another command. ![]() In this article I’ll take a look at the most common uses of the find command. You can take your findings to the next level by actually doing specific operations on the found files.įor example, you found all the files with. Besides using the find command to locate files, you can also use it to execute other Linux commands ( grep, mv, rm, etc.) on the files and directories that are found, which makes find even more powerful. The find command in Linux is an excellent tool to find files and directories based on given criteria. ![]()
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