iw <- sapply(aa,function(a) any(grepl(pattern, a, ignore.case=TRUE))) aa[iw] } findArgs("package:base","warn")## trim trailing white spacestr <-"Now is the time "sub(" +$","", str)## spaces only## what is considered 'white space' depends on the locale.sub("[[:space:]...
When a namespace is defined on a node in the XML document, an XPath expressions must use a namespace, even if it is the default namespace for the XML document/node. For example, suppose we have an XML document <help xmlns="http://www.r-project.org/Rd"><topic>...</topic></help...
Indicates the scheduling policy for a kernel thread. The default header for this field is SCH. tag Indicates the Workload Manager application tag. The default header for this field is TAG. The tag is a character string up to 30 characters long and may be truncated when displayed by ps. F...
问Windows递归grep命令行ENgrep（global search regular expression(RE) and print out the line）是一种...
“grep” is actually derived from the phrase “global regular expression print,” so we can see that grep has something to do with regular expressions. In essence, grep searches text files for the occurrence of a specified regular expression and outputs any line containing a match to standard ...
Exact String Not Being Matched by Grep, Opt for File Matching with Regex instead of String Matching, Replacing Non-Matching Words with grep or sed, Modifying grep to accurately match strings including and excluding hyphens
For example, when a pattern match occurs withgrep, the usual action is to pass that line to STDOUT and discard lines that do not match the pattern. As we saw inGetting started with regular expressions: An example, the-voption reverses those actions, so that the lines with matches are dis...
“findstr /spin /c：“string”[[drive：][path]filename[...]]”类似于上面第二高的答案（由i_...
Use the grep command with the -a option to search for a string in a binary file: grep -a 'string' binary_file1Copy The -a option instructs grep to treat the binary file as text. Limit grep Output to a Fixed Number of Lines Individual files, such as log files, can contain many ma...
Grep: memory exhausted, Memory Exhaustion or Termination Error Encountered while Using Grep, Error message 'memory exhausted' appears when using grep on a sizable partition, Duplicate: Pipe Usage Causes Memory Exhaustion on Large Files with Grep