Check if a file is executable Install $ npm install --save executable Usage constexecutable=require('executable');executable('bash').then(exec=>{console.log(exec);//=> true}); API executable(file) Returns a Promise for a boolean.
Hence, let’s refine our check using theffor file flag first: $ if [ -f foo ] && [ -x foo ]; then echo "File is executable"; else echo "File is not executable"; fi File is not executable 4. Dealing With Symbolic Links
Minimal module to check if a file is executable, and a normal file. Usesfs.statand tests against thePATHEXTenvironment variable on Windows. USAGE import{isexe,sync}from'isexe'// or require() works too// const { isexe } = require('isexe')isexe('some-file-name').then(isExe=>{if(isExe...
if [ -r file.txt ] then echo “File is readable” fi if [ -w file.txt ] then echo “File is writable” fi if [ -x file.txt ] then echo “File is executable” fi “` ### 比较数字 在if条件命令中,我们可以使用比较运算符来比较数字的大小,常见的比较运算符有`-eq`(等于)、`-ne`...
-x file file exists and is executable (has execute/searchpermission for the effective user). 表达式 如果下列条件为真则返回True file1 -ef file2 file1 和 file2 拥有相同的索引号(通过硬链接两个文件名指向相同的文件)。 file1 -nt file2 file1新于 file2。 file1 -ot file2 file1早于 file2。
FILE exists and is a named pipe -s FILE FILE exists and has a size greater than zero -S FILE FILE exists and is a socket -w FILE FILE exists and is writable -x FILE FILE exists and is executable ===if简化语句=== 最常用的简化if语句 && 如果是“前面”,则“后面” [ -f /var/run...
if [ ! -f "$myFile" ]; then touch "$myFile" fi 4. 变量是否有值 #其他参数还有-n,-n是判断一个变量是否是否有值 if [ ! -n "$myVar" ]; then echo "$myVar is empty" exit 0 fi 5. 两个变量判断是否相等 if [ "$var1" = "$var2" ]; then ...
3. Checking if File is Readable, Writable or Executable To verify that the program can access a file as needed, you can use theisReadable(Path),isWritable(Path), andisExecutable(Path)methods. Java program to test a file if it is readable, writable and executable. You can need tobuild Pa...
执行docker file时,如果使用到了别的配置文件,这些配置文件不能放到【执行docker file目录】的父目录,但可以放到子目录。 在执行docker file目录下,可以放一个隐藏文件(.dockerignore),里面存放的是build时不需要的文件。可以使用通配符去指定。比如,某个子目录里10个文件,build时有3个文件不需要,你在docker file里...
and is a socket.-t file descriptor number fildes is open and associated with a terminal device.-u file exists and has its setuid(2) bit set.-w file exists and is writable by the current process.-x file exists and is executable by the current process.-z string length is zero.