只有第一个字符有用,用以取代换行符作为行的结束标志-e:在输入的时候可以使用命令补全功能,使用Tab键可自动不全当前目录下文件-i[text]:If readline is being used to read the line,text is placed into the editing buffer before editing begins-n[nchars]:后跟一个数字,定义输入文本...
invalid options and require14--to prevent this interpretation.15: [arguments]16No effect; the command does nothing beyond expanding arguments and performing any specified redirections. A zero exit code is returned.1718. filename [arguments]19source filename [arguments]20Read and execute commands from...
#stderr 重定向到 file$command2>file#stderr 追加到 file 文件末$command2>>file#将 stdout 和 stderr 合并后重定向到 file$command> file 2>&1 或 $command>> file 2>&1#stdin 和 stdout 都重定向。command命令将 stdin 重定向到 file1,将 stdout 重定向到 file2。$command< file1 >file2 (4)H...
1、文件管理 catchattrchgrpchmod chowncksumcmpdiff diffstatfilefindgit gitviewindentcutln lesslocatelsattrmattrib mcmdelmdirmktemp moremmovemreadmren mtoolsmtoolstestmvod pastepatchrcprm slocatesplitteetmpwatch touchumaskwhichcp whereismcopymshowfatrhmask ...
uniq——— 将文件内容无重复地打印到屏幕上,在linux_command基础上再添加几行重复数字。 wc——— 统计文件内容中的行数,字数,byte数打印到屏幕上。 wc命令行结果 grep——— 抓取文件内容,十分重要,经常与正则表达式搭配使用。 举个例子,如果我想要找到带有file一行的文本; grep结果 常用的选项有: -i:忽略大...
printf("Open file:hello.c %d\n",fd); //write if((size=write(fd,buf,len))<0){ perror("write:"); exit(1); } else printf("Write:%s\n\n\n",buf); //test-read printf("Now test starts...\n\n"); for(i=0;i<20;i++){ ...
PID USER PR NI VIRT RES SHR S%CPU %MEM TIME+COMMAND1379root160797624561980S0.71.30:11.03sshd14704root1602128980796R0.70.50:02.72top1root1601992632544S0.00.30:00.90init2root3419000S0.00.00:00.00ksoftirqd/03root RT0000S0.00.00:00.00watchdog/0 ...
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 0.1 44128 6620 ? Ss 10:24 0:01 /usr/lib/systemd/systemd --switched-root --system --deserialize 24 root 2 0.0 0.0 0 0 ? S 10:24 0:00 [kthreadd] root 3 0.0 0.0 0 0 ? S 10:24 0:00 [ksoftirqd/0] ...
Using volume group(s) on command line Finding volume group "vg0" --- Volume group --- VG Name vg0 System ID Format lvm2 Metadata Areas 3 Metadata Sequence No 2 VG Access read/write VG Status resizable MAX LV 0 Cur LV 0 Open LV 0 ...
Iozone: Performance Test of File I/O Version $Revision: 3.394 $ Compiled for 32 bit mode. Build: linux Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Run began: Sat Apr 23 12:25:34 2011 Auto Mode Command line used:...