I am trying to understand the difference between grep -e and grep -E. Now from grep manpage I got:-E, --extended-regexp. Interpret PATTERN as an extended regular expression (see …

2019年5月16日 · Here's an example of grep -q: scanning the output of a command for a particular value, then performing an action if the value is found: if docker context ls | grep -q dm …

2010年1月1日 · Recursive grep is, of course, still preferable if available, but there's little reason to avoid the xargs recipe (do use -H for the grep to avoid the final invocation of grep getting …

2010年11月8日 · grep -nr 'yourString*' . The dot at the end searches the current directory. Meaning for each parameter:-n Show relative line number in the file 'yourString*' String for …

@Chris it's possible you don't have *.scss files in current directory but somewhere deeper in subdirs so grep does not look in all the files you wanted. You should use --include option to tell …

2017年1月8日 · From "man grep": three variant programs egrep, fgrep and rgrep are available. egrep is the same as grep -E. fgrep is the same as grep -F. rgrep is the same as grep -r. …

In GNU grep, there is no difference in available functionality between basic and extended syntaxes. In other implementations, basic regular expressions are less powerful. The following …

2013年6月16日 · The ERE option means the same regular expressions, more or less, as used to be recognized by the egrep command, which is no longer a part of POSIX (having been …

2011年12月1日 · The grep utility looks for patterns inside files; it's irrelevant if what you care about is the file's name. Shell wildcard patterns are the way to match files by their names. In …

2008年9月18日 · Another grep tool I now use all the time on Windows is AstroGrep: Its ability to show me more than just the line search (i.e. the --context=NUM of a command-line grep) is …