The test command also has a logical "not" operator, which can get a TRUE answer when you need to test whether a file does not exist. Check if the file exists Run one of the following commands to check if the file exists: Check if the directory still exists The -d operator allows you...
```bash # Check if two variables are equal if [ $var1 -eq $var2 ] then echo "Variables are equal" else echo "Variables are not equal" fi # Check if a file exists if [ -f $file ] then echo "File exists" else echo "File does not exist" fi # Check if a command is successf...
|| die"\`$CONFIG_FILE' does not exist"[[$CONFIG_FILE=~ (^|/)([a-zA-Z0-9_=+.-]{1,15})\.conf$ ]] || die"The config file must be a valid interface name, followed by .conf"CONFIG_FILE="$(cd"${CONFIG_FILE%/*}"&& pwd -P)/${CONFIG_FILE##*/}"((($(stat-f'0%#p...
上面代码表示,echo命令即是内置命令,也有对应的外部程序。 type命令的-t参数,可以返回一个命令的类型:别名(alias),关键词(keyword),函数(function),内置命令(builtin)和文件(file)。 $ type -t bash file $ type -t if keyword 上面例子中,bash是文件,if是关键词。 快捷键 Bash 提供很多快捷键,可以大大方便...
The package version contains manual pages and bash completion script which is installed in default location: /etc/bash_completion.d/oc while only a single executable file is available in the archive version.Diagnostic Steps With autocompletion enabled the shell presents oc supported commands: Raw #...
/bin/bash: No such file or directory Connection to example-server closed. [test@example-server ~] $ The/var/log/messagesshow following logs when booted with old kernel. Raw example-server kernel: Linux version 2.6.32-504.1.3.el6.x86_64 (mockbuild@x86-022.build.eng.bos.redhat.com) (gcc...
# Check if symbolic link "file_link" exists if [ -L "file_link" ]; then echo "Symbolic link 'file_link' exists in the current directory." else echo "Symbolic link 'file_link' does not exist in the current directory." fi Output: ...
echo "$MyFile exists." else echo "$MyFile does not exist." fi Running the script results in the following output: 22. Check Inodes and Disk Usage Inodes represent data units on a physical or virtual server. Each text file, video, folder, HTML file, or script is 1 inode. We’ll ch...
* Check whether a /etc/ssh/sshd_config file exists * Create a backup of this file * Edit the file to set certain parameters EOF } backup_sshd_config(){ if [ -f ${file} ] then /usr/bin/cp ${file} ${file}.1 else /usr/bin/echo "File ${file} not found." ...
One ignore -- I believe standing for Does Not Exist Jul 31, 2023 .editorconfig Exclude files that don't work with shellcheck Sep 18, 2022 .gitattributes Setting gitattributes for more sane checkouts on Windows/Cygwin. Jun 6, 2013 .gitignore ...