Sponsored Content
Top Forums Shell Programming and Scripting How to perform comparision in unix Post 61384 by bhargav on Wednesday 2nd of February 2005 07:02:06 PM
Old 02-02-2005
Code:
#!/usr/bin/ksh

str=""

if test $str==""
 then
   echo "YES"
 else
   echo "NO"
fi

if [ $str==""  ]
then
    echo "YES"
else
    echo "NO"
fi

if test -z "$str"
then
    echo "YES"
else
    echo "NO"
fi

if ! test -n "$str"
then
    echo "YES"
else
    echo "NO"
fi

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

how can perform zip or unzip at unix console

how can perfrom zip or unzip for bulk of files at unix console can anybody tell that command (2 Replies)
Discussion started by: lmraochodisetti
2 Replies

2. Shell Programming and Scripting

Unix File Comparision

I have a file named file1 which contains numbers in sequence like... 1 2 3 7 8 Then i have file File 2 that contains 4 5 ........so i need to compare both files so that i can find out the missing entry in the sequence is 6.......These files are flat files which contain and so i need to... (5 Replies)
Discussion started by: coolguy01
5 Replies

3. UNIX for Dummies Questions & Answers

Can you perform mathematical equations in UNIX?

Hello one and all, I have a basic background in UNIX, but I was wondering if there is a way to perform simple mathematical equations (like multiplication, addition)? If so, is there a way to multiply values from a column by a value to produce a column with the answers? :confused: I am... (4 Replies)
Discussion started by: VioletFairy
4 Replies

4. Shell Programming and Scripting

Comparision of two huge unix files - Reconcilation

Hi, I have two huge file; each one has approximately 150000 lines. I need to compare both of them and store the unmatched lines into a different file. I have searched for everything in google but did not get solution. Files are: File1 NRALBAMINDB20003726 NRALBAMINDB20003727... (16 Replies)
Discussion started by: Suman Singh
16 Replies

5. Shell Programming and Scripting

Date comparision in Unix

Hi All, I would need your help to compare dates in my script. Say if I have the dates in a file I need to comapre these dates with yesterday's date and the dates which are older than yesterday needs to be displayed. Example: 03/22/2012 03/24/2012 03/20/2012 03/21/2012 03/12/2012... (1 Reply)
Discussion started by: pdreddy34
1 Replies

6. Shell Programming and Scripting

Unix Script -- Unable to perform division

I'm new to scripts, i wrote the below script to capture the percentage of FreeMemory available in Linux box. Output of UsedfreeMemory is displayed as '0'. I'm expecting the output like 0.89 (or) .89 --- ( 0.89 perferable) Anyone can help me on this pls. ... (3 Replies)
Discussion started by: murali1687
3 Replies

7. UNIX and Linux Applications

Unix Shell Scripting : Comparision of two files

Hi, We need to compare a text file File1.txt and config file File2.txt in a way that it checks if the content of File1.txt exists between the range mentioned in File2.cfg. The range here is the range between col1 and col2 of File2.cfg If the content of File1.txt lies between the range of... (12 Replies)
Discussion started by: CFA
12 Replies

8. Shell Programming and Scripting

UNIX shell script - cut specified line and perform loop

Guys, I have a requirement as below. consider,if i use df command, its getting the below output. file system kbytes used avail %used Mounted on /dev/sample/ 45765 40000 5765 50% / /dev/filesys/ 30000 20000 1000 80% /u .... .... Now i wanted to cut the /u... (11 Replies)
Discussion started by: AraR87
11 Replies

9. Shell Programming and Scripting

Comparing Select Columns from two CSV files in UNIX and create a third file based on comparision

Hi , I want to compare first 3 columns of File A and File B and create a new file File C which will have all rows from File B and will include rows that are present in File A and not in File B based on First 3 column comparison. Thanks in advance for your help. File A A,B,C,45,46... (2 Replies)
Discussion started by: ady_koolz
2 Replies

10. Shell Programming and Scripting

awk script to perform an action similar to vlookup between two csv files in UNIX

Hi, I am new to awk/unix and am trying to put together an awk script to perform an action similar to vlookup between the two csv files. Here are the contents of the two files: File 1: Date,ParentID,Number,Area,Volume,Dimensions 2014-01-01,ABC,247,83430.33,857.84,8110.76... (9 Replies)
Discussion started by: Prit Siv
9 Replies
MKDIR(1)							   User Commands							  MKDIR(1)

NAME
mkdir - make directories SYNOPSIS
mkdir [OPTION]... DIRECTORY... DESCRIPTION
Create the DIRECTORY(ies), if they do not already exist. Mandatory arguments to long options are mandatory for short options too. -m, --mode=MODE set file mode (as in chmod), not a=rwx - umask -p, --parents no error if existing, make parent directories as needed -v, --verbose print a message for each created directory -Z, --context[=CTX] set the SELinux security context of each created directory to default type or to CTX if specified --help display this help and exit --version output version information and exit GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report mkdir translation bugs to <http://translationproject.org/team/> AUTHOR
Written by David MacKenzie. COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
mkdir(2) The full documentation for mkdir is maintained as a Texinfo manual. If the info and mkdir programs are properly installed at your site, the command info coreutils 'mkdir invocation' should give you access to the complete manual. GNU coreutils 8.22 June 2014 MKDIR(1)
All times are GMT -4. The time now is 05:54 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy