Use curly braces only when they are part of a code sample or other string literal.
If completing a step in the path takes the user to a new page or menu where they complete another action, describe that action in a new task step instead of combining it in the same step. In order for an action to qualify as a step in a menu path, the action must be accessible within that menu. Select Start > Administrative Tools > Computer Management.Select Start, then Administrative Tools, then Computer Management.Instead, spell out the sentence using a word like "then".
#Regex curly brackets series
Enter your user-specified domain in this format: domain). Enter your user-specified domain in this format: domain].ĭo not use the right-pointing angle bracket ( > ) to indicate navigation through a series of menu item selections. Use angle brackets as a placeholder for variables you want the user to enter.Ĭorrect Enter your user-specified domain in this format: Incorrect Enter your user-specified domain in this format: domain}. To ensure that there is a blank line between output paragraphs, set the output record separator to two newlines.There are three kinds of brackets: angle brackets, curly braces, and square brackets. The output paragraphs will not be separated since the output separator remains a single newline.
#Regex curly brackets plus
If RS is null, then records are separated by sequences consisting of a plus one or more blank lines, leading or trailing blank lines shall not result in empty records at the beginning or end of the input, and a shall always be a field separator, no matter what the value of FS is. If any field in an record contains /host_name yyyyyyyyy991/ print the record. RS= changes the input record separator from a newline to blank lines. A, -after-context=NUM print NUM lines of trailing contextĪnother solution in case the file config.dat is not standard, meaning the key word "yyyyyyyyy991" doen't follow the same pattern in every section, then awk can do what you want as follows: awk -v RS='' '/host_name yyyyyyyyy991/' config.dat B, -before-context=NUM print NUM lines of leading context Meaning you only have one line before yyyyyyyyy991 and five lines after it, then this command will help you to get the output you want: grep -B 1 -A 5 "yyyyyyyyy991" config.dat Let's say your configuration file is called config.dat and it has standard format. The script itself simply prints any records matching the desired pattern. Then, the -ne means "Read each input record and apply the script given by -e to it". The -00 tells perl to read the input file as paragraphs, so each record is a paragraph (defined by 2 consecutive \n characters) instead of a line. Personally, however, I would do this sort of thing using perl's paragraph mode: $ perl -00 -ne 'print if /yyyyyyyyy991/' file The regular expression looks for the word define, followed by 0 or more non- } characters ( *), then host_name yyyyyyyyy991 and then everything until the first } (. Interpret PATTERN as an extended regular expression (ERE, see below). Print only the matched (non-empty) parts of a matching line, with each null option, this option can be used with commands like sort -z to Zero byte (the ASCII NUL character) instead of a newline. Treat input and output data as sequences of lines, each terminated by a The grep options used are (from the man page of GNU grep): -z, -null-data Hostgroups +bu-automotiveprd,screen-automotiveprd2 If your grep supports it, you can use the -z option to make it slurp the entire file: $ grep -ozE 'define*host_name yyyyyyyyy991.+?}.' file
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