Sponsored Content
Full Discussion: testing if files exist
Top Forums UNIX for Dummies Questions & Answers testing if files exist Post 302184908 by era on Sunday 13th of April 2008 02:13:27 PM
Old 04-13-2008
That's the loop. If you always want exactly two arguments and they both need to exist, you can do that too. The -o doesn't "remember" what you did before so you need to tell it again to look for a file.

Code:
if [ -f "$1" -o -f "$2" ]

The loop I posted earlier works for any number of file names, and checks each of them in turn; but if two need to exist at the same time, it won't check for that. (Of course, then you need -a "and", not -o "or".)
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to check a file exist and do a copy of other files

Hi, I would like to perform bash which would check the file A.txt to be size 0 or not. If the size is 0, I would copy file B.txt to replace A.txt. Please help. Thanks. -Jason (6 Replies)
Discussion started by: ahjiefreak
6 Replies

2. Shell Programming and Scripting

perl: When dealing with files that do not exist

I have a process run weekly where I must convert data formats for about thirty files. I read a text file that provides all of the filenames and switch settings. My perl code is: for ($j = 1; $j <= $k; $j++) { open(FIN2,$fin2) || die "open: $!"; do other stuff } Every once in... (2 Replies)
Discussion started by: joeyg
2 Replies

3. Shell Programming and Scripting

Delete files if they exist

In a directory a number of files named res0.om res1.om ... resN.om where N can be any unknown number between 1 and 999 Please help me filling out the gaps in the following csh script: I need to delete all files exept res0.om The easy way is rm res1* rm res2* rm res3* rm res4*... (5 Replies)
Discussion started by: pederlol
5 Replies

4. Shell Programming and Scripting

Find out whether files exist.

I have the following data stored in a file. 1 /home/file13 /home/file2 2 /home/file41 /home/file654 3 /home/file61 /home/file45 4 /home/file81 /home/file43 ... I want to print the first column provided the files represented by the second and third column exist. How to do that? (3 Replies)
Discussion started by: kevintse
3 Replies

5. Shell Programming and Scripting

bash script for testing existence of files/folders and creating if neither exist

Hi, I am new to shell-scripting, and doing a lot of reading. I am having some trouble getting started with a simple testing of scripting. I have been experimenting with if, loops, for, test, etc., but still unsure. I seem to have the hang of it when it comes to creating a single file or... (6 Replies)
Discussion started by: me2
6 Replies

6. UNIX for Dummies Questions & Answers

Rsync copy files if dont exist

I have a setup where I have two drives. TV TVbackup For what ever reason, I have a lot of content on my TVbackup drive which isn't on my TV drive. I want to copy all the files across which are on TVbackup but are not currently on TV. If there is a file with the same name but a... (2 Replies)
Discussion started by: Spadez
2 Replies

7. Shell Programming and Scripting

Script to mail if files do not exist

Hi all! I need some help with a script, but I want to make it better, my script prints the last two files on each directory: echo " " echo "******************* mediation_sgsn:***********************" ls -lrt /moneta_collected03/mediation_sgsn | tail -2 echo " " echo... (6 Replies)
Discussion started by: fretagi
6 Replies

8. Shell Programming and Scripting

File exist for multiple files

Hi, I am unable to achieve the file exist conditions if there are multiple files same similar name for e.g. in a $Direct i am having files like aus.txt aus.txt_pr aus.txt_2012 i need to put a file exist condition like which is not working then echo "File present" but the... (9 Replies)
Discussion started by: rohit_shinez
9 Replies

9. UNIX for Beginners Questions & Answers

Check if 10 files exist

Hi All, Whenever i get 10 files(file names like sales*) then another file need to create. May i know how to implement this in KSH. (4 Replies)
Discussion started by: siddireddy
4 Replies

10. Shell Programming and Scripting

Find command when there exist many files

I want to run find and wondering if it struggles when there are many files. I have tried and does not seem to complain. Is this correct? (8 Replies)
Discussion started by: kristinu
8 Replies
IRSEND(1)							   User Commands							 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.9.0-pre1 October 2010 IRSEND(1)
All times are GMT -4. The time now is 11:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy