How to check if a file exists in Linux

#There are two ways to check whether a file exists in Linux: find command or shell script.

1. Find command

(1) find is a common method used to find files under Linux.

(2) find syntax: find [specify the search directory] [search rules] [action to be executed after the search]

(3) For example: find /tmp -name wa* -type l, is to search for files named starting with wa and of type symbolic link under /tmp. To find it means to exist.

2. Shell script

Shell is a program written in C language. It is a bridge for users to use Linux. Shell is both a command language and a programming language. Shell refers to an application that provides an interface through which users access the services of the operating system kernel.

(1) Automatic identification is often required during automatic processing of files. The following script determines whether test.log exists. If it exists, it will display that the file exists, otherwise it will display that the file does not exist.

(2) Example: Edit a script to determine whether the file exists.

vi t.sh

#!/bin/bash
if  [ -e /temp/test.log ]；then   //这里是判断语句，-e表示进行比较结果为真则存在
echo "文件存在"
else
echo "文件不存在"
fi

Save and exit

Execute:

sh t.sh

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