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Full Discussion: How to print column by getting user input.?
Top Forums Shell Programming and Scripting How to print column by getting user input.? Post 302741351 by Akshay Hegde on Saturday 8th of December 2012 07:42:33 AM
Old 12-08-2012
How to print column by getting user input.?
Hi..

I have data file.. and I could able to print using cat and awk

like this

Code:
cat filename
awk '{print $1 "\t" $2 "\t" $3}' filename

but I want to receive input from user like this

Code:
echo -n " how many columns you want to display : "
read abc

suppose if I give all, it should display all column, and suppose if I give 1,4,5,8,3

it should display only 1st, 4th,5th,8th,3rd column...

How can I do this...

I have one more problem,

I have one script...using for loop for that.. like this
Code:
for file in *.txt ; do
----------
---------
---------
done

if for loop executed successfully, I want to display

Code:
echo -e "Operation successful"

if not I want to display
Code:
echo -e "Check user input,operation unsuccessful"

please go through attached file
input.txt (4.0 KB) 
 

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LEARN ABOUT HPUX

ascii

ascii(5)							File Formats Manual							  ascii(5)

NAME

       ascii - map of ASCII character set

SYNOPSIS

DESCRIPTION

       The file provides a map of the ASCII character set, giving both octal and hexadecimal equivalents of each character.  The file contains the
       following text:

	      |000 nul|001 soh|002 stx|003 etx|004 eot|005 enq|006 ack|007 bel|
	      |010 bs |011 ht |012 nl |013 vt |014 np |015 cr |016 so |017 si |
	      |020 dle|021 dc1|022 dc2|023 dc3|024 dc4|025 nak|026 syn|027 etb|
	      |030 can|031 em |032 sub|033 esc|034 fs |035 gs |036 rs |037 us |
	      |040 sp |041  ! |042  " |043  # |044  $ |045  % |046  & |047  ' |
	      |050  ( |051  ) |052  * |053  + |054  , |055  - |056  . |057  / |
	      |060  0 |061  1 |062  2 |063  3 |064  4 |065  5 |066  6 |067  7 |
	      |070  8 |071  9 |072  : |073  ; |074  < |075  = |076  > |077  ? |
	      |100  @ |101  A |102  B |103  C |104  D |105  E |106  F |107  G |
	      |110  H |111  I |112  J |113  K |114  L |115  M |116  N |117  O |
	      |120  P |121  Q |122  R |123  S |124  T |125  U |126  V |127  W |
	      |130  X |131  Y |132  Z |133  [ |134   |135  ] |136  ^ |137  _ |
	      |140  ` |141  a |142  b |143  c |144  d |145  e |146  f |147  g |
	      |150  h |151  i |152  j |153  k |154  l |155  m |156  n |157  o |
	      |160  p |161  q |162  r |163  s |164  t |165  u |166  v |167  w |
	      |170  x |171  y |172  z |173  { |174  | |175  } |176  ~ |177 del|

	      | 00 nul| 01 soh| 02 stx| 03 etx| 04 eot| 05 enq| 06 ack| 07 bel|
	      | 08 bs | 09 ht | 0a nl | 0b vt | 0c np | 0d cr | 0e so | 0f si |
	      | 10 dle| 11 dc1| 12 dc2| 13 dc3| 14 dc4| 15 nak| 16 syn| 17 etb|
	      | 18 can| 19 em | 1a sub| 1b esc| 1c fs | 1d gs | 1e rs | 1f us |
	      | 20 sp | 21  ! | 22  " | 23  # | 24  $ | 25  % | 26  & | 27  ' |
	      | 28  ( | 29  ) | 2a  * | 2b  + | 2c  , | 2d  - | 2e  . | 2f  / |
	      | 30  0 | 31  1 | 32  2 | 33  3 | 34  4 | 35  5 | 36  6 | 37  7 |
	      | 38  8 | 39  9 | 3a  : | 3b  ; | 3c  < | 3d  = | 3e  > | 3f  ? |
	      | 40  @ | 41  A | 42  B | 43  C | 44  D | 45  E | 46  F | 47  G |
	      | 48  H | 49  I | 4a  J | 4b  K | 4c  L | 4d  M | 4e  N | 4f  O |
	      | 50  P | 51  Q | 52  R | 53  S | 54  T | 55  U | 56  V | 57  W |
	      | 58  X | 59  Y | 5a  Z | 5b  [ | 5c   | 5d  ] | 5e  ^ | 5f  _ |
	      | 60  ` | 61  a | 62  b | 63  c | 64  d | 65  e | 66  f | 67  g |
	      | 68  h | 69  i | 6a  j | 6b  k | 6c  l | 6d  m | 6e  n | 6f  o |
	      | 70  p | 71  q | 72  r | 73  s | 74  t | 75  u | 76  v | 77  w |
	      | 78  x | 79  y | 7a  z | 7b  { | 7c  | | 7d  } | 7e  ~ | 7f del|

   Control Characters
       The following table shows the set of ASCII control characters with their octal, decimal, and hexadecimal values.  To obtain the	respective
       characters from the keyboard, use the indicated keypress combinations.

       To place control characters in a file when using the or editor, type Ctrl-before typing the desired control character.

				      +----+-----+-----+---------+--------+------------------------+--------------+
				      |Oct | Dec | Hex | Display | Symbol |	  Char Name	   |   Keypress   |
				      +----+-----+-----+---------+--------+------------------------+--------------+
				      |000 | 000 | 00  |  none	 |  NUL   | Null		   | Ctrl-Shift-@ |
				      |001 | 001 | 01  |   ^A	 |  SOH   | Start of Header	   |	Ctrl-A	  |
				      |002 | 002 | 02  |   ^B	 |  STX   | Start of Text	   |	Ctrl-B	  |
				      |003 | 003 | 03  |   ^C	 |  ETX   | End of Text 	   |	Ctrl-C	  |
				      |004 | 004 | 04  |   ^D	 |  EOT   | End of Transmission    |	Ctrl-D	  |
				      |005 | 005 | 05  |   ^E	 |  ENQ   | Enquire		   |	Ctrl-E	  |
				      |006 | 006 | 06  |   ^F	 |  ACK   | Acknowledge 	   |	Ctrl-F	  |
				      |007 | 007 | 07  |   ^G	 |  BEL   | Bell		   |	Ctrl-G	  |
				      +----+-----+-----+---------+--------+------------------------+--------------+
				      |010 | 008 | 08  |   ^H	 |   BS   | Back Space		   |	Ctrl-H	  |
				      |011 | 009 | 09  |   ^I	 |   HT   | Horizontal Tab	   |	Ctrl-I	  |
				      |012 | 010 | 0A  |   ^J	 |   LF   | Line Feed		   |	Ctrl-J	  |
				      |013 | 011 | 0B  |   ^K	 |   VT   | Vertical Tab	   |	Ctrl-K	  |
				      |014 | 012 | 0C  |   ^L	 |   FF   | Form Feed		   |	Ctrl-L	  |
				      |015 | 013 | 0D  |   ^M	 |   CR   | Carriage Return	   |	Ctrl-M	  |
				      |016 | 014 | 0E  |   ^N	 |   SO   | Shift Out		   |	Ctrl-N	  |
				      |017 | 015 | 0F  |   ^O	 |   SI   | Shift In		   |	Ctrl-O	  |
				      +----+-----+-----+---------+--------+------------------------+--------------+
				      |020 | 016 | 10  |   ^P	 |  DLE   | Data Link Escape	   |	Ctrl-P	  |
				      |021 | 017 | 11  |   ^Q	 |  DC1   | Device Control 1	   |	Ctrl-Q	  |
				      |022 | 018 | 12  |   ^R	 |  DC2   | Device Control 2	   |	Ctrl-R	  |
				      |023 | 019 | 13  |   ^S	 |  DC3   | Device Control 3	   |	Ctrl-S	  |
				      |024 | 020 | 14  |   ^T	 |  DC4   | Device Control 4	   |	Ctrl-T	  |
				      |025 | 021 | 15  |   ^U	 |  NAK   | Negative Acknowledge   |	Ctrl-U	  |
				      |026 | 022 | 16  |   ^V	 |  SYN   | Synchronize 	   |	Ctrl-V	  |
				      |027 | 023 | 17  |   ^W	 |  ETB   | End Transmission Block |	Ctrl-W	  |
				      +----+-----+-----+---------+--------+------------------------+--------------+
				      |030 | 024 | 18  |   ^X	 |  CAN   | Cancel		   |	Ctrl-X	  |
				      |031 | 025 | 19  |   ^Y	 |   EM   | End of Medium	   |	Ctrl-Y	  |
				      |032 | 026 | 1A  |   ^Z	 |  SUB   | Substitute		   |	Ctrl-Z	  |
				      |033 | 027 | 1B  |   ^[	 |  ESC   | Escape		   |	Ctrl-[	  |
				      |034 | 028 | 1C  |   ^	 |   FS   | File Separator	   |	Ctrl-	  |
				      |035 | 029 | 1D  |   ^]	 |   GS   | Group Separator	   |	Ctrl-]	  |
				      |036 | 030 | 1E  |   ^^	 |   RS   | Record Separator	   | Ctrl-Shift-^ |
				      |037 | 031 | 1F  |   ^_	 |   US   | Unit Separator	   | Ctrl-Shift-_ |
				      +----+-----+-----+---------+--------+------------------------+--------------+
				      |177 | 127 | 7F  |   ^?	 |  DEL   | Delete		   |	 DEL	  |
				      +----+-----+-----+---------+--------+------------------------+--------------+
WARNINGS

       Note  that some HP-UX subsystems, such as the keyboard interface, window systems, and other system software, may use selected keyboard con-
       trol characters for special purposes, possibly causing unexpected results.

FILES

																	  ascii(5)
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