Sponsored Content
Top Forums Shell Programming and Scripting what is the difference between -f and -e, when checking for file exists Post 302550680 by ch33ry on Friday 26th of August 2011 05:23:08 PM
Old 08-26-2011
what is the difference between -f and -e, when checking for file exists

Hi All,

what is the difference between -f and -e.

Regards,
ch33ry
 

10 More Discussions You Might Find Interesting

1. IP Networking

checking a connection still exists?

Hi I have a bit of c code which I'm trying to use as a relay between apache and a scgi cluster. Example of problem code is below: while((n = recv(scgiSock, local_data, MAX_LENGTH, 0)) > 0) { time(&t2); time_now = t2 - t1; if(time_now > TIMEOUT) ... (2 Replies)
Discussion started by: fishman2001
2 Replies

2. Shell Programming and Scripting

Checking the file if it exists

Hi This will be useful who is looking for checking the files in a directory #chmod 777 /cronacle/tools/teradata/opo/bin/file_check.sh SUBJECT=`echo "File Not Found"` SUBJECT1=`echo "File Found"` #RECIPIENT=Madhu.Reddy@ge.com cd /cronacle/tools/teradata/opo/bin file_list=attach.sh if ... (3 Replies)
Discussion started by: ksmbabu
3 Replies

3. Shell Programming and Scripting

Checking if a file exists

How can I check if a file exists in shell script. Basically, I want to check if a file Test_msgs has been created today. If it has been then append data to it. Otherwise, create it. I have written the following but it does not work. todaysdate=$(date +%d%m%Y) timenow=$(date +%H%M%S)... (4 Replies)
Discussion started by: gugs
4 Replies

4. Shell Programming and Scripting

checking textfile exists or not in all directories

Hai All, please help me in solving this assignment!!! i need a unix script that has to check the text file exists or not in all directories and sub directories if textfile exists display the directory path else display does not exists!! example: kamal.txt that i want to search if the... (5 Replies)
Discussion started by: G.K.K
5 Replies

5. Shell Programming and Scripting

Checking if file exists using a NOT operator and shell variable

Hi, I'm new to UNIX, at least shell programming and am having trouble figuring out a problem i'm having. In one section in my nested if statement, i want the program to test if the file does not exist, based on an argument supplied at the command line by the user. What i have is elif ; then... (3 Replies)
Discussion started by: rowlf
3 Replies

6. Shell Programming and Scripting

Checking if file exists

How can I check if a file exists in csh? I know there is "-e $file" but do not know exactly how to use it. I have tried the below but I'm getting "Bad : modifier in $ ( )." foreach f ($AfullnameLst) if (-e $f) then echo "$f: file exists" endif end (6 Replies)
Discussion started by: kristinu
6 Replies

7. Shell Programming and Scripting

Checking whether the file exists under a directory and doing a diff

Hi Everyone, I am writing a shell script for the below needs and would like your suggestions and advices. I have a lot of scripting files(Shell Scripts) under the directory: /home/risk_dev/dev I have another directory which has a lot of shell scripts under the directory: ... (2 Replies)
Discussion started by: filter
2 Replies

8. Shell Programming and Scripting

Checking if file exists and unzipping

Hey, I am new to scripting and was wondering what is wrong with this if statement. I want to check if file exists and the if it does to unzip it. I program it as follows if ; then gunzip *_filename.gz fi Thanks in advance! Please use code tags next time for your code and data. (10 Replies)
Discussion started by: mostarac2487
10 Replies

9. Shell Programming and Scripting

Problem with ssh and checking if file exists

Hi All, I am facing a problem while checking for existence of file over ssh ! Basically, i want to ssh and check if file exists.. If file exists return 1. If file does not exits return 0 (or any value) I am using the below code file_avail=`ssh username@host "if ]; then exit 1;... (10 Replies)
Discussion started by: galaxy_rocky
10 Replies

10. Shell Programming and Scripting

For loop without checking file exists

In several scripts that process files matched by name pattern I needed to add a check for file existence. Just to illustrate let's say I need to process all N??? files: /tmp$ touch N100 N101 /tmp$ l ?10 -rw-rw-r-- 1 moss group 0 Apr 19 11:22 N100 -rw-rw-r-- 1 moss group ... (10 Replies)
Discussion started by: migurus
10 Replies
fdim(3M)																  fdim(3M)

NAME
fdim(), fdimf(), fdiml(), fdimw(), fdimq() - positive difference functions SYNOPSIS
HP Integrity Server Only DESCRIPTION
The function determines the positive difference between its arguments. Integrity Server Only is a version of it takes arguments and returns a result. is a version of it takes arguments and returns a result. is an version of it takes arguments and returns an result. is equivalent to on HP-UX systems. USAGE
To use this function, compile either with the default option or with the and options. To use (for Integrity servers) or compile with the option. Make sure your program includes Link in the math library by specifying on the compiler or linker command line. RETURN VALUE
The function returns the positive difference between x and y. If x y, returns x y (and raises any exceptions resulting from the subtraction). If x y, returns +zero. If x or y is NaN, returns NaN. If both arguments are NaNs, returns NaN. returns a positively signed infinity in lieu of a value whose magnitude is too large, and raises the overflow and inexact exceptions. ERRORS
No errors are defined. SEE ALSO
fdim(3M), fmin(3M), math(5). STANDARDS CONFORMANCE
: ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'') fdim(3M)
All times are GMT -4. The time now is 10:07 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy