Comments on: Linux/UNIX: Find Out If File Exists With Conditional Expressions

By: chey

chey — Fri, 02 Dec 2011 15:41:48 +0000

Thanks for the script, it was very useful.

By: Ravi Theja

Ravi Theja — Tue, 13 Sep 2011 20:05:00 +0000

if [ -e filename ] works for me and checks fine ONLY when I’m logged in as a power broker. It doesn’t test when I log in as a normal user or call the script from a different scheduling tool.

Please help me ASAP

By: Sergani

Sergani — Tue, 02 Aug 2011 01:32:11 +0000

you could also have done the following:

find /home/username/thunderbird-directory/ -iname .parentlock -ok rm {} ;\

it’ll find the file and attempt to remove it, but will ask you first… if you need it to remove it right away, replace -ok with -exec

By: Sergani

Sergani — Tue, 02 Aug 2011 01:30:01 +0000

cd /path/to/directory
for i in $(ls -1 *)
do
if [ -f $i ] ; then
ll $i
else
echo “$i is not a file”
fi

By: Sergani

Sergani — Tue, 02 Aug 2011 01:26:42 +0000

Try ls -1D (that’s ls -’ONE’ -D)

By: Ked

Ked — Tue, 28 Jun 2011 13:05:47 +0000

That was a great help, I needed a script to check if the .parentlock file was present in the Thunderbird profile directory and then delete it if it was.

Worked first time :)

By: Lalit Mohan

Lalit Mohan — Mon, 07 Mar 2011 06:35:32 +0000

I want to check file that i fetching is complete or not, if file is still copying than wait for few minutes, can this things possible, Reply me Please!!!

By: sonal

sonal — Mon, 07 Feb 2011 06:34:51 +0000

i need to check all the files in the current directory and display them.how can i do this?

By: Betulino

Betulino — Thu, 12 Aug 2010 08:06:16 +0000

Hi,

I have /media/USBDisk0 and that the mount point for my USBDisk.
And a hard link named /media/TheData/Data -> /media/USBDisk0/Data
When the USB is mounted, the hard link is OK, but If something fail, the hard link is broken…. Can use the if to test the hard link?

By: Jasper

Jasper — Mon, 02 Aug 2010 10:57:52 +0000

Hi,

I need to check if a file with the current date exists in a folder. How would I do that?

By: Anthony Youngman

Anthony Youngman — Fri, 28 May 2010 20:40:22 +0000

ls D
blah blah blah
drwx—— Program Files

if -d D/Program\ Files returns FALSE

It would be nice if I could find some way of successfully testing for names with spaces :-(

Cheers,
Wol

By: amit

amit — Thu, 11 Mar 2010 17:09:02 +0000

the only thing i can say is that -

if statement does’nt allow wild card, you have to think a work around for this

By: krishna

krishna — Sun, 24 Jan 2010 13:21:56 +0000

I need the shell script to check whether the file exist or not
and whether the format of the file is .dat or not

expecting the help ASAP…pls

By: Debbie

Debbie — Tue, 24 Nov 2009 19:41:02 +0000

I want to test if any file ending in *.DATGO exists.
Do you always have to use the exact name of the file?

By: Fred

Fred — Tue, 17 Nov 2009 13:31:10 +0000

For me, it only works without variables, like

if [ -f /home/user/hey.jpg ]; then
….
else
….
fi

Worth trying.

By: Rajee

Rajee — Fri, 09 Oct 2009 10:06:40 +0000

How to check some set of files in the following directory and do the process.
my statement following is not working: pls explain
if [ -f "$ROOT/abc/files/CUST*" ]; then
echo “inside customer file exists”
else
echo “No customer file exists”
fi
CUST is the post fix of the files, expected to have more than 1 file on some days.

By: Zach

Zach — Thu, 01 Oct 2009 20:52:17 +0000

I just hacked this together. I plan to use it for my other scripts. The exit statements make the script exit with a 0 (bash standard for successful completion) or a 1 (non-zero is the bash standard for a failed action)

#!/bin/bash
FILE=$1
if [ -f $FILE ];
then
exit 0
else
exit 1
fi

By: Bram

Bram — Mon, 06 Apr 2009 09:02:48 +0000

Bash knows the NOT procedure for IF. So No ELSE would be used. watch the !

#!/bin/bash
FILE=$1
if [ ! -f $FILE ];
then
echo "File $FILE does not exists"
fi

By: Don Petrus

Don Petrus — Wed, 14 Jan 2009 15:03:22 +0000

Hello Volks:
I would like to look for a File: if it exists – AND – it´smaller (lt/gt) than 1000000, then … echo ” File too small” , return 1 … and so on:

#!/bin/bash
FILE=nec2.txt
if -f [ "$FILE" ] && -f [ "$FILE" -lt 1000000 ] ;
then
echo “File $FILE too small”
else
echo “File $FILE does not exists”
fi

-rw-rw—- 1 cas lokus 31626 2008-12-15 14:00 xnec2.txt

I use linux 2.4.21-278-smp

Can you please help there ? Pleas reply to donpetrus@hotmail.com
Many thanks in advance – Petrus

By: thant

thant — Mon, 08 Dec 2008 16:57:45 +0000

DatePart=`date ‘+%m%d%Y`
FileName =DataFile_${DatePart}.csv