cut命令

cut命令适用于按列提取文本字符

cut命令格式为：“cut [参数] 文本”

---

cut参数

       -b, --bytes=LIST

              select only these bytes

      -c, --characters=LIST

              select only these characters

      -d, --delimiter=DELIM

              use DELIM instead of TAB for field delimiter

      -f, --fields=LIST

              select only these fields;  also print any line that  con‐

              tains  no  delimiter  character,  unless the -s option is

              specified

      -n    with -b: don't split multibyte characters

      --complement

              complement the  set  of  selected  bytes,  characters  or

              fields

      -s, --only-delimited

              do not print lines not containing delimiters

      --output-delimiter=STRING

              use  STRING as the output delimiter the default is to use

              the input delimiter

      -z, --zero-terminated

              line delimiter is NUL, not newline

      --help display this help and exit

      --version

              output version information and exit

---

用例：

cut  -d:  -f1 /etc/passwd