WebThe easiest way to check if any file with a wildcard expression exists is to use ls command. You simply check if ls (with a pattern) returns non-zero. PATTERN="/etc/systemd/*.conf" if ls $PATTERN 1> /dev/null 2>&1; then echo "Files exist" fi Another method is to use the compgen command. You can use the -G option to specify a glob pattern. Web5 aug. 2009 · 6 Answers Sorted by: 9 You probably want /bin/bash unless you need to use /bin/sh, /bin/sh is more restricted. So if you are using bash: Like so: if [ [ -e filename ]]; then echo 'exists' fi If your filename is in a variable, then use the following, the double quotes are important if the file has a space in it:
Shell script to check for the presence of one or more files with a ...
Web9 feb. 2016 · In general, the best way to test whether you can open a file - whether it be for input or output - is simply to try to open it. More specifically for output, if you only wish to open a file for output if doing so would create a new file, POSIX shells offer the no-clobber shell option configurable via set, and so you can use this to test whether output exists … Web16 feb. 2015 · This script does not use polling. In other words, it does not do periodic checks. Instead, it uses a tool, inotifywait, that is designed to monitor changes to the filesystem. In this script, inotifywait monitors the current directory (.Every time that a file is created in that directory, inotifywait emits its name and the script checks to see if it … key verse in 1 timothy
linux - How to check a file exists - Server Fault
WebSyntax of powershell if file exists is given below: Test-Path Cmdlet Syntax: This cmdlet is used to check not only a file exists but also it can be used to check if a path exists. It returns true if there is a match. An error is returned … Web4 nov. 2016 · The check function checks all of it arguments to be regular files. If the next file isn't exist, the function returns 1 and nothing happens. If all of the files exists, then … WebIn this tutorial, we will go through Bash Script examples to check if file exists covering both the above said expressions. Examples Example 1 – Using [ -a FILE ] ( Depreciated method to check in bash if file exists.) Example 2 – Using [ -e FILE ] ( Preferred method to check in bash if file exists.) We shall use a sample.txt file for this example key verse in micah