返回值一般都是给shell程序使用, 如果指向在终端使用grep查找, 则不用关心其返回值) grep操作会返回其状态,对于一般函数来讲,就是函数内部的return和exit等。 返回值通过变量$?获取。 grep的man手册中是这样定义返回值的: EXIT STATUS The exit status is 0 if selected lines are found, and 1 if not found...
pmatch("med", c("mean", "median", "mode")) # returns 2 pmatch(c("", "ab", "ab"), c("abc", "ab"), dup = FALSE) pmatch(c("", "ab", "ab"), c("abc", "ab"), dup = TRUE) ## compare charmatch(c("", "ab", "ab"), c("abc", "ab")) @ 最后来说charmatch...
I'm searching a directory recursively using grep with the following arguments hoping to only return the first match. Unfortunately, it returns more than one -- in-fact two the last time I looked. It seems like I have too many arguments, especially without getting the desired outcome. :-/ ...
printed. The scanning will stop on the first match.-L, --files-without-match Suppress normal output; instead print the name of each inputfilefromwhichno output would normally have been printed. The scanning will stop on the first match.-r, --recursive Read all files under each directory, ...
If -o is combined with -v (invert the sense of the match to find non-matching lines), no output is generated, but the return code is set appropri- ately. If the matched portion of the line is SunOS 5.11 Last change: 10 User Commands PCREGREP(1) empty, nothing is output unless ...
m <- do.call(rbind, lapply(seq_along(res),function(i) {if(result[i] == -1)return("") st <- attr(result,"capture.start")[i, ] substring(res[i], st, st + attr(result,"capture.length")[i, ] -1) })) colnames(m) <- attr(result,"capture.names") ...
智能类型匹配补全 CodeArts IDE会自动过滤推荐列表,直到仅包括与当前上下文匹配的类型。 这在以下情况中有效: 在赋值语句的右侧。 在变量初始化中。 在return语句中。 在方法调用的参数列表中。 在对象实例化中new关键字后。 在链式表达式中。 父主题: 代码补全 ...
return0; } /*===*/ /* * [Update Info] * * $Log: HelloWorld.c,v $ * Revision 1.1 2010/01/28 00:00:18 CookieBear.info * The first version of this program. * */ /*===*/ 第一步,统计所有的注释行,命令如下: grep -En ‘^\/\*|^[[:space...
First, we randpkg –l, which lists installed*.debpackages on your system. Second, we piped that output togrep –ipython, which simple states “go to grep and filter out and return everything with ‘python’ in it.” The–ioption is there to ignore-case, asgrepis case-sensitive. Using...
*/ op = oo = *out; while(oo) { op = oo; oo = oo->next; } op->next = ot; ot->next = NULL; return(0); ERROR: if (!(flags & FS_NOERROR)) fprintf(stderr,"tgrep: Output lost. No space. " "[%s: line %d byte %d match : %s\n", wt->path,lc,bc,line); return(...