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if condition in bash

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# 1  
Old 12-21-2011
if condition in bash
Hi, I have meaning to include an if condition statement in my code to check the directory for existing output files and if its existing i want the program to delete it before doing the succeeding command. i just dont know the correct syntax for it. thanks much guys, this forum has indeed been very helpful,Smilie

Code:
if *.dat, *.asc exists, remove files

# 2  
Old 12-21-2011
Code:
 
ls *.dat 1>/dev/null 2>&1 && rm -rf *.dat || echo "No Files Found"
ls *.asc 1>/dev/null 2>&1 && rm -rf *.asc || echo "No Files Found"

This User Gave Thanks to itkamaraj For This Post:
ida1215
# 3  
Old 12-21-2011
Or a much safer script:

Code:
cd your_directory
ls -1d *\.dat *\.asc 2>/dev/null | while read filename
do
       # Remove echo when tested
       echo rm "${filename}"
done

This User Gave Thanks to methyl For This Post:
ida1215
# 4  
Old 12-21-2011
If using the if bash keyword is not a must, you could use the find program to do the job:

PHP Code:
find . \( -name "*.dat"  -o  -name "*.asc" \) -exec rm {} \; 
or

PHP Code:
find . \( -name "*.dat"  -o  -name "*.asc" \) -delete 
This User Gave Thanks to pflynn For This Post:
ida1215
# 5  
Old 12-21-2011
Thanks guys for all the possible ways to do it. bunch of thanks everyone,Smilie
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