07-02-2008
for checking numeric values use:
-eq equal to
-ne not equal to
-lt less than
-le less than or equal to
-gt greater than
-ge greater than or equal to
for string comparison use:
>
<
==
!=
=
for regex use:
[[
]]
let me know if u hav any confusion.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
G'day guys, first post so be gentle.
I need help with some code to work out if a variable (string) contains any integers. The valid variable (string) must contain only letters.
Also need to be able to work out if a variable contains only integers.
Any help greatly appreciated. (7 Replies)
Discussion started by: haz
7 Replies
2. UNIX for Dummies Questions & Answers
hi,
How to check a given file for a string and if it's not found, exit out ofthe script?
e.g. a file Test123 is there whose header begins with #bt and trailer begins with #ed.
I have to check if the header and trailer matches as above and if not, exit out of the script.
How can we do it in... (2 Replies)
Discussion started by: er_ashu
2 Replies
3. Shell Programming and Scripting
How to check if a string in contained in another string ?
Like
Whether the String "brown" is contained in
"A quick brown fox jumps over a lazy the dog" (1 Reply)
Discussion started by: hidnana
1 Replies
4. UNIX for Dummies Questions & Answers
How could I check if a string variable contains at least (or only) 2 characters, and check and make sure that the string does not contain any numeric digits?...I need to know how to do this as simple as possible. and I am using the Ksh shell. Thanks. (1 Reply)
Discussion started by: developncode
1 Replies
5. Shell Programming and Scripting
lets think str is a variable...how can i check it is pure alphabetic or not
for numeric checking i have used echo $str|grep -v ]
but the command echo $str|grep -v ] is not working (1 Reply)
Discussion started by: arghya_owen
1 Replies
6. Shell Programming and Scripting
Hi,
How do i check if there are any files present in the folder with some specific starting string.
For eg :- I have used this where Source_File is filename parameter.
if
then
return 2
fi
But in my case the source file name is not constant. The only constant thing is... (10 Replies)
Discussion started by: chetancrsp18
10 Replies
7. Shell Programming and Scripting
I am parsing a file and I get differnt results everytime.
Sometimes I get 12s sometimes I get 54m and sometime 3h..
v1=12s or v1=54m or v1=3h
12s - 12 seconds
54m - 54 minutes
3h - 3 hour
I have to write a script in such a way that it whenever v1 is in minutes,
I should strip "m"... (14 Replies)
Discussion started by: jayeshpatel
14 Replies
8. Shell Programming and Scripting
Hi ,
I have a file likeA-0044150|ABC/Frito/
A-0044150|GFHU
A-0150075|Bud Racing
A-0187811|Bud Light
A-0187811|RW&B signmaking
I Want the o/p likeA-0044150|ABC/Frito/,GFHU
A-0150075|Bud Racing
A-0187811|Bud Light,RW&B signmaking (2 Replies)
Discussion started by: jagdishrout
2 Replies
9. Programming
I have a string s
Are the following equivalent?
if ( ! s.empty() ) {
}
if ( s ) {
} (1 Reply)
Discussion started by: kristinu
1 Replies
10. Shell Programming and Scripting
what is the purpose of below specially "-z" string checking, how?
pid=`ps ax |grep java`
if (3 Replies)
Discussion started by: learnbash
3 Replies
LEARN ABOUT NETBSD
strcmp
STRCMP(3) BSD Library Functions Manual STRCMP(3)
NAME
strcmp, strncmp -- compare strings
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
int
strcmp(const char *s1, const char *s2);
int
strncmp(const char *s1, const char *s2, size_t len);
DESCRIPTION
The strcmp() and strncmp() functions lexicographically compare the nul-terminated strings s1 and s2.
RETURN VALUES
The strcmp() and strncmp() return an integer greater than, equal to, or less than 0, according to whether the string s1 is greater than,
equal to, or less than the string s2. The comparison is done using unsigned characters, so that '200' is greater than '