The braces are used when there are multiple commands you want to execute after || but you could also write this as an "if then else" if that's more convenient. Then it's easier to add commands, too.
The braces and the semicolons are not necessary here, because everything up to "fi" (or "else") is executed when the condition matches. The || { stuff; } syntax is just basically a shorthand for when you want to cram stuff into a one-liner.
Hi friends, :)
In a shell script i found the following if condition.
echo -n "Which version of $1 do you want to restore ('0' to quit)? : "
read desired
if ${desired:=1} -ge $index ] ; then
echo "$0: Restore canceled by user: index value too big." >&2
exit 1
fi
Can... (1 Reply)
i have a paramter data_date in which i am passing a string value.i want to find out another paramter file_date from this.the logic is given below
if day of data_date = sunday or monday
then
file_date=data_date-1
else
file_date=data_date-2
i am passing data_date as 20061027.
how can i... (3 Replies)
Hi,
I am trying to execute this command, but is it not working, says "`;' unexpected"
eval $lgrep $SAM_CMD ; if ; then ; echo "No Error" ; fi
What i want is, return the command output, if it is non zero, say "No Error".
Thanks, John. (21 Replies)
Executed the following if conditions .. and got different results .
only (( )) gave correct o/p with all scenarios .
Can anybody please let me know what is the difference between and ] and ((condition)) when used with if condition.
And why each condition gave different result.
1.... (2 Replies)
hi,
I have some problems in my simple script about the redirect echo stdout command inside a condition. Why is the echo command inside the elif still execute in the else command
Here are my simple script
After check on the two diff output the echo stdout redirect is present in two diff... (3 Replies)
HI
My doubt may be basic one but I need to get it clarified..
When i use "if" condition that checks for many AND, OR logical conditions
like
if ]; then
return 0
fi
Even the if condition fails it returns as zero.. Any clue..
But if i add else condition like
if ]; ... (2 Replies)
Hi all
Unix newbie - please be gentle
Am modifying an existing script to error trap a variable with a length of 0
#!/bin/bash
ipfile='/var/data/bin/ipaddress'
] && ipold="$(< "$ipfile" )"
ipnew="$( wget -q -O - checkip.dyndns.org | sed -e 's/.*Current IP Address: //;s/<.*$//' )"
#... (6 Replies)
o/p of my command is given below
My requirement is
if Pnumber is 0 then
stabilization.Build.2013
else
stabilization.PBuild.2013.3 (11 Replies)
Discussion started by: nikhil jain
11 Replies
LEARN ABOUT DEBIAN
mongofiles
MONGOFILES(1) Mongo Database MONGOFILES(1)NAME
mongofiles - a simple GridFS interface
SYNOPSIS
mongofiles [OPTIONS]
DESCRIPTION
mongofiles is used to list, get, and insert files in the database.
EXAMPLES
mongofiles list
lists files in test.fs.files
mongofiles put README.txt
inserts the file README.txt into the collection test.fs.files
mongofiles get photo.jpg
retrieves photo.jpg from test.fs.files and saves it locally
OPTIONS --help show usage information
-h, --host HOST
mongo host to which to connect
-d, --db DB
database to use (default DB=test)
-c, --collection COLLECTION (default COLLECTION=fs.files)
collection to use
--command [list|search|put|get]
execute a command
--file FILE
filename for get or put
list list all files. takes an optional filename. the file has to start with the filename
search search all files for something that contains the string
COPYRIGHT
Copyright 2007-2009 10gen
SEE ALSO
For more information, please refer to the MongoDB wiki, available at http://www.mongodb.org.
AUTHOR
Kristina Chodorow
10gen June 2009 MONGOFILES(1)