CODEWITHSUNDEEP
bash
AskMath
AskMath

Reputation: 425

How can I check if a file with given name exists in same directory?

Given a filename (the presented as full name, namely, the path to the file from the current folder), how can I check if exists there (in the folder of the file "filename") , file with name f?

Upvotes: 1

Views: 1374

Answers (3)

Aly Shmahell
Aly Shmahell

Reputation: 531

So if I understand you correctly, you want to check for the existence of file "f" knowing the path to a neighbor file.
Here is a bash shell-script (let's call it "findNeighborFile.sh") that does the trick: 

#!/bin/bash

neighbor=$1
target=$2
directory=$(dirname "${neighbor}")
if [ -f "$neighbor" ]; then
    echo "$neighbor is present"
    if [ -f "$directory/$target" ]; then
        echo "$directory/$target is present"
    else
        echo "$directory/$target is not present"
    fi
else
    echo "$neighbor is not present"
    if [ -f "$directory/$target" ]; then
        echo "$directory/$target is present"
    else
        echo "$directory/$target is not present"
    fi
fi

The script takes in two arguments: first the neighbor file path, second the target file you're looking for.
Let's say you have a directory called "test" located in the same directory as the script, and "test" contains two files "f1", "f2". now you can try different test-cases:

Both files exist:

./findNeighborFile.sh ./test/f1 f2
./test/f1 is present
./test/f2 is present

Target does not exist: 

./findNeighborFile.sh ./test/f1 f3
./test/f1 is present
./test/f3 is not present

Neighbor does not exist: 

./test/f3 is not present
./test/f2 is present

Neither file exists: 

./findNeighborFile.sh ./test/f3 f4
./test/f3 is not present
./test/f4 is not present

Upvotes: 0

Henno Brandsma
Henno Brandsma

Reputation: 2166

if [[ -e $(dirname "${startname}")/"f" ]]; then
echo "exists"
fi

to check that f exists in the same directory as ${startname} is.

Upvotes: 0

FBergo
FBergo

Reputation: 1071

If what you want is, given "/long/path/name.txt", determine whether a file named "name.txt" exists in the current directory, then:

LONG=/long/path/name.txt
SHORT=${LONG##*/}
if [ -f "$SHORT" ]; then
    echo file exists
else
    echo file does not exist
fi

Upvotes: 1

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