pr
Linux Command – pr ใช้ในการแสดงข้อมูลภายใน file ในรูปแบบสิ่งพิมพ์
คำสั่ง
pr <file1>
$ pr file1 2017-05-07 10:23 file1 Page 1 aaaaaaaaaaa bbbbbbbbbbb ccccccccccc ddddddddddd eeeeeeeeeee fffffffffff ggggggggggg
<command> |pr
$ ls -a | pr -n -h "Files in $(pwd)" 2017-05-09 15:50 Files in /home Page 1 1 . 2 .. 3 .bash_history 4 .bash_logout 5 .bashrc 6 bc.cal 7 .cache 8 chatterbot 9 dos.txt 10 download 11 file1 12 file1.sort
โครงสร้างคำสั่ง
pr [OPTION]... [FILE]...
รายละเอียด
เป็นคำสั่งที่ใช้ในการแสดงข้อมูลภายใน file ในรูปแบบสิ่งพิมพ์
Option
Mandatory arguments to long options are mandatory for short options too. +FIRST_PAGE[:LAST_PAGE], --pages=FIRST_PAGE[:LAST_PAGE] begin [stop] printing with page FIRST_[LAST_]PAGE -COLUMN, --columns=COLUMN output COLUMN columns and print columns down, unless -a is used. Balance number of lines in the columns on each page -a, --across print columns across rather than down, used together with -COLUMN -c, --show-control-chars use hat notation (^G) and octal backslash notation -d, --double-space double space the output -D, --date-format=FORMAT use FORMAT for the header date -e[CHAR[WIDTH]], --expand-tabs[=CHAR[WIDTH]] expand input CHARs (TABs) to tab WIDTH (8) -F, -f, --form-feed use form feeds instead of newlines to separate pages (by a 3-line page header with -F or a 5-line header and trailer without -F) -h, --header=HEADER use a centered HEADER instead of filename in page header, -h "" prints a blank line, don't use -h"" -i[CHAR[WIDTH]], --output-tabs[=CHAR[WIDTH]] replace spaces with CHARs (TABs) to tab WIDTH (8) -J, --join-lines merge full lines, turns off -W line truncation, no column alignment, --sep-string[=STRING] sets separators -l, --length=PAGE_LENGTH set the page length to PAGE_LENGTH (66) lines (default number of lines of text 56, and with -F 63). implies -t if PAGE_LENGTH <= 10 -m, --merge print all files in parallel, one in each column, truncate lines, but join lines of full length with -J -n[SEP[DIGITS]], --number-lines[=SEP[DIGITS]] number lines, use DIGITS (5) digits, then SEP (TAB), default counting starts with 1st line of input file -N, --first-line-number=NUMBER start counting with NUMBER at 1st line of first page printed (see +FIRST_PAGE) -o, --indent=MARGIN offset each line with MARGIN (zero) spaces, do not affect -w or -W, MARGIN will be added to PAGE_WIDTH -r, --no-file-warnings omit warning when a file cannot be opened -s[CHAR], --separator[=CHAR] separate columns by a single character, default for CHAR is the <TAB> character without -w and 'no char' with -w. -s[CHAR] turns off line truncation of all 3 column options (-COLUMN|-a -COLUMN|-m) except -w is set -S[STRING], --sep-string[=STRING] separate columns by STRING, without -S: Default separator <TAB> with -J and <space> otherwise (same as -S" "), no effect on column options -t, --omit-header omit page headers and trailers; implied if PAGE_LENGTH <= 10 -T, --omit-pagination omit page headers and trailers, eliminate any pagination by form feeds set in input files -v, --show-nonprinting use octal backslash notation -w, --width=PAGE_WIDTH set page width to PAGE_WIDTH (72) characters for multiple text-column output only, -s[char] turns off (72) -W, --page-width=PAGE_WIDTH set page width to PAGE_WIDTH (72) characters always, truncate lines, except -J option is set, no interference with -S or -s --help display this help and exit --version output version information and exit
กลุ่มคำสั่ง
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Reference:
Author: Suphakit Annoppornchai
Credit: https://saixiii.com
