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Csh to check for existence of file


 
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# 1  
Old 12-04-2007
Csh to check for existence of file

Hi,

I would like to check the existence of files (doesn;t matter the number of files) in a directory.
My file is named in the following manner (always ending with " myfile "). Can anybody give me some guidance?

EG:
abc1_myfile
sdfr_myfile
sffgd_myfile
and so on ......

My intention is to perform the following:

if file exist, perform plan A.
else perform plan B.
# 2  
Old 12-04-2007
if [ -f *myfile ]
then
do stuff
else
do other stuff
fi
# 3  
Old 12-04-2007
Hi robsonde,

Thanks. But your codes are not in csh i suppose.
# 4  
Old 12-04-2007
Code:
if ls *myfile 2>/dev/null
then
    echo some exist
fi

# 5  
Old 12-05-2007
I'm a bit rusty on csh, since I never use it but if I remember correctly from when we had a bunch of users to support who did use it, the syntax would be something like:

Code:
foreach file ( *_myfile )
    echo $file
end

or if you want the action a or action b

Code:
ls *_myfile >& /dev/null
if ( $status == 0 ) then
    foreach file ( *_myfile )
        echo $file
    end
else
    echo "no files"
endif

# 6  
Old 12-05-2007
hi reborg,

I tried the " $status " in a directory containing *myfile.
And these statement appear " Reset tty pgrp from 7873 to 11434 ". What does this statement mean ?
Is " $status " a special variable in csh ?

Code:
% ls *myfile
xxx1_myfile  xxx2_myfile
% ls *myfile|echo $status
0
% Reset tty pgrp from 7873 to 11434

# 7  
Old 12-05-2007
$status in csh/tcsh is the same as $? in sh/ksh

The below should work for you, for multiple files.

Code:
#!/bin/csh

foreach file ( $* )
ls $file 2>&1 /dev/null
        if ( $status == 0 ) then
                echo $file
        else
            echo "no files"
        endif
end

to test: ./scriptname file1 file2 file3

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