ᴀ ʙ … - separates numeric options that you want to combine (e.g., bold yellow-on-black text combines options 1, 33, and 40 into 1 33 40).Resetting any of these will revert to the terminal's defaults, not any of grep's defaults. The starting conditions for all GREP_COLORS options are the terminal's default text style, font, and colors. The numbers can style text, change the foreground color or the background color, or change fonts. Thanks.You can change the highlight color of grep by using an environment variable, GREP_COLORS, which you can set like this: export GREP_COLORS='ms=01 31' If you liked this post about Linux grep Command Examples, please share it with your friends on the social networks using the buttons on the left or simply leave a reply below. You can also read our post about Linux Grep Guide for Advanced Users. They are available 24×7 and will take care of your request immediately. Of course, you don’t have to learn the grep commands in Linux, if you use one of our managed & optimized VPS Hosting services, in which case you can simply ask our expert Linux admins to help you with grep command on your Linux server. The fgrep searches a file or list of files for a fixed pattern string. #egrep 'cachedir|exclude' /etc/yum.confĬachedir=/var/cache/yum/$basearch/$releasever To search for multiple patterns at one time, you can simply use the egrep command. Search for lines containing ‘eval’ in all PHP files located in the current directory: #find. Grep Command Example on how to search for lines in the current directory Listed below are some more advanced examples of how to use the grep command on Linux: 6. Grep command is often used in a Unix/Linux pipeline with other commands. read all files under each directory) and lists the file names only: # grep -ril "str_replace" admin*.php Search for all PHP files whose contents mention ‘str_replace’ text which has either capital or small letters in it, located in the ‘wp-admin’ directory recursively (i.e. Grep Command Example on how to search in all files for specific text recursively sanitize_html_class( strtolower( str_replace( '_', '-', get_locale() ) ) ) 5. If you want to add line numbers to search results, use the following command: # grep -n "str_replace" admin*.phpĪdmin-ajax.php:73: add_action( 'wp_ajax_'. Grep Command Example on how to add line numbers to search results sanitize_html_class( strtolower( str_replace( '_', '-', get_locale() ) ) ) Ĥ. str_replace( array( '.', ',' ), '-', floatval( $wp_version ) ) Īdmin-header.php:$admin_body_class. Search for all PHP files containing ‘str_replace’ text inside the ‘wp-admin’ directory of a WordPress installation: # grep "str_replace" admin*.phpĪdmin-ajax.php: add_action( 'wp_ajax_'. Grep Command Example on how to search for specific text in all files Search for lines containing ‘DB_USER’ in WordPress configuration file (wp-config.php): # grep 'DB_USER' wp-config.phpĭefine('DB_USER', 'wpuser') 2. Grep Command Example on how to search for lines in a specific file Grep Command Example on how to find a file with text patternġ. Grep Command Example on how to remove all frozen messages in Exim mail queue Grep Command Example on how to display the total number of connections on a specific port Grep Command Example on how to see which socket belongs to process ID Grep Command Example on how to list all Apache processes
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