linux command


Linux Command – pr ใช้ในการแสดงข้อมูลภายใน file ในรูปแบบสิ่งพิมพ์



pr <file1>

$ pr file1

2017-05-07 10:23 file1 Page 1



<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
 7 .cache
 8 chatterbot
 9 dos.txt
 10 download
 11 file1
 12 file1.sort



 pr [OPTION]... [FILE]...



เป็นคำสั่งที่ใช้ในการแสดงข้อมูลภายใน file ในรูปแบบสิ่งพิมพ์



 Mandatory arguments to long options are mandatory for short options too.

 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

 output version information and exit





คำสั่ง Unix – Linux Command

Linux, Unix


Author: Suphakit Annoppornchai


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