Sponsored Content
Full Discussion: what's wrong with if fi??
Top Forums Shell Programming and Scripting what's wrong with if fi?? Post 302689223 by elixir_sinari on Tuesday 21st of August 2012 02:13:24 AM
Old 08-21-2012
Quote:
Originally Posted by pamu
Code:
if [[ `grep used file` = "" ]]

[[..]] construct is not at all required here. The general syntax of if is:
Code:
if statement
then
 <something>
fi

Something like this could be used instead (as Corona688 pointed out):
Code:
if ! grep -q used file 2>/dev/null

 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

What am I doing wrong

When I execute following shell script I am getting the following error syntax error at line 50 : `<<' unmatched What am I doing wrong :confused: Script begins here ---------------- MPAN_FILE=$1 exec 3<$MPAN_FILE ... (2 Replies)
Discussion started by: guptan
2 Replies

2. UNIX for Dummies Questions & Answers

Please tell me what do I do wrong here!

#!/usr/bin/csh # DAY=`date +%y%m%d` H=`date +%H` M=`date +%M` mailx -s "$H-Myfile" email@email.com</home/mydir/myfile Thanks! (4 Replies)
Discussion started by: bobo
4 Replies

3. Shell Programming and Scripting

Anything wrong with this

Does anyone see anything wrong with this. #getInfraFiles() #{ # cd Infra/$DAY # rm * # /usr/bin/ftp -i -n $LINE << cmd # user "$USER" "$PASSWD" # cd $INFRAPATH # binary # mget * # bye #} besides that its commented out (4 Replies)
Discussion started by: rcunn87
4 Replies

4. UNIX for Dummies Questions & Answers

what is wrong here

Hello, I have a simple script such as ----------------------------- #! /bin/sh YEAR=`date -u +%Y`; MONTH=`date -u +%m`; DAY=`date -u +%d`; DATE=$MONTH$DAY$YEAR LOGFILES=auditTrail-$DATE LOGMATCH=$LOGFILES\* ARGUM='' # find all files and write them to a file find . -name... (7 Replies)
Discussion started by: arushunter
7 Replies

5. UNIX for Dummies Questions & Answers

What am I doing wrong?

I really just mess around in UNIX, for the most part, when I want to get something done. I can usually piece things together by searching for brief how-to's on Google, but the syntax errors in my following .sh file are really confusing me. I've got lots of programming experience in other places, so... (7 Replies)
Discussion started by: demonpants
7 Replies

6. UNIX for Dummies Questions & Answers

what is wrong with this tr -d?

here is my command in bash shell on Mac OS X tiger: history | tr -d emacs here is what I get: hitory | grp "" | tr -d "" hitory | grp "" | tr -d """" hitory | grp "" | tr -d '' hitory | grp "" | tr -d '' hitory | grp "" | tr -d '' hitory | grp "" | tr -d... (3 Replies)
Discussion started by: cleansing_flame
3 Replies

7. Shell Programming and Scripting

what I m doing wrong?

when user select option 2 nothing happen.for testing purpose I put echo command but is not executing . basically when user prompt for option 2,I want to get list of database name from user separeted by space (TEST DEVL) and put into the file seprated by new line TEST DEVL after that stay on... (1 Reply)
Discussion started by: okreporthai
1 Replies

8. UNIX for Dummies Questions & Answers

What is wrong in here ???

]#PATH=/usr/bin:/etc:/bin:/boot/grub:/boot/grup/bin: /boot/solaris/bin:/sbin:/usr/openwin/bin:/usr/5bin://usr/X11/bin:/usr/apache/bin:/usr/apache2/bin:/usr/appserver/bin:... (9 Replies)
Discussion started by: microbot
9 Replies

9. UNIX for Advanced & Expert Users

What am I doing wrong here?

I am working on a simple login ID check shell script that should prompt for a user ID then check to see if this user is logged on. Trying to get the hang of this stuff so I am thinking of my own little projects. #! /bin/sh echo "please enter a user name" read user if user=$user then... (3 Replies)
Discussion started by: jsk319342
3 Replies

10. Shell Programming and Scripting

Why result is wrong here ? whether break statement is wrong ?

Hi ! all I am just trying to check range in my datafile pls tell me why its resulting wrong admin@IEEE:~/Desktop$ cat test.txt 0 28.4 5 28.4 10 28.4 15 28.5 20 28.5 25 28.6 30 28.6 35 28.7 40 28.7 45 28.7 50 28.8 55 28.8 60 28.8 65 28.1... (2 Replies)
Discussion started by: Akshay Hegde
2 Replies
ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME
zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files SYNOPSIS
zgrep [grep-flags] [--] pattern [files ...] zegrep [grep-flags] [--] pattern [file ...] zfgrep [grep-flags] [--] pattern [file ...] DESCRIPTION
zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1). The grep-flags and pattern arguments are passed on to grep(1). If an -e flag is found in the grep-flags, zgrep will not look for a pattern argument. zegrep calls egrep(1), while zfgrep calls fgrep(1). EXIT STATUS
In case of missing arguments or missing pattern, 1 will be returned, otherwise 0. SEE ALSO
egrep(1), fgrep(1), grep(1), gzip(1), zcat(1) AUTHORS
Thomas Klausner <wiz@NetBSD.org> BSD
December 28, 2003 BSD
All times are GMT -4. The time now is 10:31 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy