Sponsored Content
Full Discussion: Unique Number Identifying
Top Forums Programming Unique Number Identifying Post 302910248 by MadeInGermany on Wednesday 23rd of July 2014 09:23:57 AM
Old 07-23-2014
If the digits are on the same line, you can use grep
Code:
if echo 123 | grep '\(.\).*\1' >/dev/null; then echo "Non-unique"; else echo "unique"; fi
if echo 112 | grep '\(.\).*\1' >/dev/null; then echo "Non-unique"; else echo "unique"; fi

\(.\) matches one character and saves a reference #1, .* means zero or more characters, \1 means that #1 re-occurs.
This User Gave Thanks to MadeInGermany For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Directory Inode Number Not Unique

Hi, I know that inode for each file is unique, but is it the for the directory? So far I found different directories has the same inode nubmer when you do ls -i, could some one explain why? Thanks a lot. (9 Replies)
Discussion started by: nj302
9 Replies

2. UNIX for Dummies Questions & Answers

identifying duplicates line & reporting their line number

I need to find to find duplicate lines in a document and then print the line numbers of the duplicates The files contain multiple lines with about 100 numbers on each line I need something that will output the line numbers where duplicates were found ie 1=5=7, 2=34=76 Any suggestions would be... (5 Replies)
Discussion started by: stresslog
5 Replies

3. Shell Programming and Scripting

unique number for a date

Hello, In korn-shell, how can I do to have an unique number for a date done. I want to use it to have the number of days between two dates. Thanks in advance. (4 Replies)
Discussion started by: madmat
4 Replies

4. Shell Programming and Scripting

Identifying the column number

I'd like to be able to identify in which column a string occurs. So far I know that I can tell how many columns there are and how to return a specific column: $ sar -r | grep 'kbswpcad' | awk 'NF = 9 { print $NF }' %swpused I've even managed to get the columns to output to an array but I... (2 Replies)
Discussion started by: pondlife
2 Replies

5. Shell Programming and Scripting

display unique number

Hi, how i can display all the unique number from my random number script below; #!/usr/bin/perl use strict; my @alphanum = ( 'A' .. 'Z', 'a' .. 'z', 0 .. 9); my $random = join('', map($alphanum,(1..5))); print "$random\n"; Thank You. (1 Reply)
Discussion started by: malaysoul
1 Replies

6. Shell Programming and Scripting

Need to find Unique not used Number

Wrote a script to create a hidden account in OS X. It works perfect but I need to check if the UID is already in use before I tried to create the account. dscl . list /Users UniqueID | awk '{print $2}' | while read UIDS do if ; then echo "UID Is Already in USE" i=`expr "$2" - 1` echo... (4 Replies)
Discussion started by: elbombillo
4 Replies

7. Shell Programming and Scripting

minimum number of unique key

input a 1 a 2 a -1 b 1 b 2 b 3 output a -1 b 1 Thanx ---------- Post updated at 09:42 PM ---------- Previous update was at 09:10 PM ---------- Ok I managed it (7 Replies)
Discussion started by: repinementer
7 Replies

8. Shell Programming and Scripting

Finding the number of unique words in a file

find the number of unique words in a file using sort com- mand. (7 Replies)
Discussion started by: abhikamune
7 Replies

9. Shell Programming and Scripting

Concatenate lines with unique string AND number

In Bash using AWK or sed I need to convert the following file: ... numitem_tab0 =<p>1 KEYWORD</p><p>2 KEYWORD</p><p>3 KEYWORD</p><p>4 KEYWORD</p><p>5 KEYWORD</p>...<p>25 KEYWORD</p> subitem_tab0 =<p></p><p></p> ... numitem_tab6 =<p>1 KEYWORD</p><p>2 KEYWORD</p><p>3 KEYWORD</p><p>4 KEYWORD</p>... (2 Replies)
Discussion started by: pioavi
2 Replies

10. Shell Programming and Scripting

Identifying dupes within a database and creating unique sub-sets

Hello, I have a database of name variants with the following structure: variant=variant=variant The number of variants can be as many as thirty to forty. Since the database is quite large (at present around 60,000 lines) duplicate sets of variants creep in. Thus John=Johann=Jon and... (2 Replies)
Discussion started by: gimley
2 Replies
ECHO(1) 						    BSD General Commands Manual 						   ECHO(1)

NAME
echo -- write arguments to the standard output SYNOPSIS
echo [-n] [string ...] DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline (' ') character, to the standard output. The following option is available: -n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2 compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup- press the newline character. Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does not accept the -n option. Consult the builtin(1) manual page. EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs. SEE ALSO
builtin(1), csh(1), printf(1), sh(1) STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002. BSD
April 12, 2003 BSD
All times are GMT -4. The time now is 09:04 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy