-d /path/to/directory]; then echo "Failed to create directory" >&2 fi The mkdir command returned True if the folder /path/to/directory does not exist. If the directory already exists, or if the mkdir command failed, the next condition will be executed, testing whether the directory exist...
Line 20, if the directory doesn’t exist, then try to create it on line 21. If directory creation fails, then exit with an error. On line 27, after running each background job, I capture the PID and associate that with the machine (1:1 relationship). On lines 33-35, I wait for ...
And, if the Neovim configuration directory does not exist, I create it using themkdircommand. The second check is a similar check, for the Neovim initial configuration file. Since I am concerned with the check only if the file does not exist, I add the logical NOT operator (!) here too...
Check if a File Does not Exist Testing for a file returns0(true) if the file exists and1(false) if it does not exist. For some operations, you may want to reverse the logic. It is helpful to write a script to create a particular file only if it doesn’t already exist. To do so...
--initialize-insecure --user=mysql 然后可能会出现如下错误**： mysqld: Can’t create directory ...
Check if file does not exists if [ ! -f /tmp/users.txt ]; then echo "File not found" fi Parameterize file name in script to check if file doesn’t exist filecheck.sh #!/bin/bash FILEPATH=$1 if [ ! -f "$FILEPATH" ]; then ...
(Note: unlike Bash's source command, this function does not fall back to looking for the module in the current directory. If you want a file in the current directory, use ./modulename). mdsh-rewrite function before after -- output the body block of function on stdout, optionally ...
You can have awhileloop to keep checking for that directory's existence and only write a message while the directory does not exist. If you want to do something more elaborate, you could create a script and show a more clear indication that the loop condition became true: ...
When I start my emacs in Windows 10, I see "1 error(s) at startup! spacemacs may not be able to operate properly." and (Spacemacs) Error in dotspacemacs/user-config: Searching for program: No such file or directory, bash.exe: warning: could not find /tmp, please create!
if 语句 在bash 中的 If 语句是相当让人讨厌去记它。你必须放在这些方括号中,而在方括号之间必须有空格,否则它不起作用。[[ 和 [ 方括号(双/单) 都工作。 这里我们真正进入 bash 的奇怪领域:[ 是一个程序(/usr/bin/[)但 [[ 是 bash 语法。[[ 更好。