How to skip if file not found in bash? Post: 303023742

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Top Forums Shell Programming and Scripting How to skip if file not found in bash? Post 303023742 by baris35 on Friday 21st of September 2018 01:46:27 PM

09-21-2018

Registered User

How to skip if file not found in bash?

Hello,
I have a question regarding while loop and existence of files.
I am running under ubuntu 18.04 bionic, have around fifty video files inside the directory.

script:

Code:

for file in *.mp4
do
/root/bin/ffmpeg -i $file \
-i $(basename "${file/.mp4}").bs.srt \
-i $(basename "${file/.mp4}").da.srt \
-i $(basename "${file/.mp4}").slo.srt \
-i $(basename "${file/.mp4}").sv.srt \
-map 0:v -map 0:a \
-map 1 -map 2 -map 3 -map 4 \
-c:v copy -c:a copy -c:s copy  -metadata:s:s:0 \
language=bos -metadata:s:s:1 language=dan -metadata:s:s:2 
language=slo -metadata:s:s:3 language=swe "${file/.mp4}")_output.mp4
done

What I wish to do is to prevent receiving "srt file not found" error in case there is no searched srt files inside the directory. If I don't do that, process fails.

For example,

File1.mp4 -> I have only File1.bs.srt and File1.da.srt
File2.mp4 -> I have only File2.slo.srt and File2.sv.srt

When File1.mp4 is in use, it will just take File1.bs.srt and File1.da.srt, and will skip File1.slo.srt and File1.sv.srt

How may I accomplish this?

Thanks in advance
Boris

baris35

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continue

continue(3tcl)						       Tcl Built-In Commands						    continue(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME

       continue - Skip to the next iteration of a loop

SYNOPSIS

       continue
_________________________________________________________________

DESCRIPTION

       This  command  is  typically invoked inside the body of a looping command such as for or foreach or while.  It returns a TCL_CONTINUE code,
       which causes a continue exception to occur.  The exception causes the current script to be aborted out to  the  innermost  containing  loop
       command,  which	then  continues with the next iteration of the loop.  Catch exceptions are also handled in a few other situations, such as
       the catch command and the outermost scripts of procedure bodies.

EXAMPLE

       Print a line for each of the integers from 0 to 10 except 5:
	      for {set x 0} {$x<10} {incr x} {
		 if {$x == 5} {
		    continue
		 }
		 puts "x is $x"
	      }

SEE ALSO

       break(3tcl), for(3tcl), foreach(3tcl), return(3tcl), while(3tcl)

KEYWORDS

       continue, iteration, loop

Tcl																    continue(3tcl)