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:
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)
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)
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)
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)
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)
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)
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)
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)
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
LEARN ABOUT OSX
echo
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