search:shell if file not exist相關網頁資料

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  BashFAQ - Greg's Wiki
  
  62. How do I create a temporary file in a secure manner? There does not appear to be any single command that simply works everywhere. tempfile is not portable. mktemp exists more widely (but still not ubiquitously), but it may require a -c switch to creat
  
  2025-04-24
  
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- www.google.com.tw
  
  How do I tell if a file does not exist in bash? - Stack Overflow
  
  I've used the following script to see if a file exists: #!/bin/bash FILE=$1 ... The test command ( [ here) has a "not" logical operator which is the .... [[ -f ...
  
  2025-04-23
  
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How to exit a shell script if targeted file doesn't exist - Stack Overflow

日期：2025-04-25

Given the script below, I would like to avoid the execution of the pipeline if a file does not exist. How may I exit the script straight away if the txt ......

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shell - How to execute certain commands if a file does NOT exist ...

日期：2025-04-28

Don't do that, it's not only subject to race conditions, but also the [ -e /path/file ] checks if you can do a stat(2) on a file, so it will return false for different ......

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Introduction to if

日期：2025-04-26

At times you need to specify different courses of action to be taken in a shell script , depending ... [ -c FILE ], True if FILE exists and is a character-special file. ... has been changed more recently than FILE2, or if FILE1 exists and FILE2 does ...

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File test operators

日期：2025-04-22

Returns true if... -e. file exists. -a. file exists. This is identical in effect to -e. It has been "deprecated," [1] and its use is discouraged. -f. file is a regular file (not a ......

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HowTo : Check If a File Exists | Linux BASH Scripting - ShellHacks

日期：2025-04-27

While creating BASH Scripts, it is commonly helpful to check if a file exists before attempting to perform ... -f "/etc/passwd" ]; then echo "The File Does Not Exist"; fi....

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Bash Shell: Check File Exists or Not - nixCraft

日期：2025-04-26

20 Apr 2012 ... This article describes how to check check if a text file exist or not (check the existence of a text file) under bash shell....

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Linux/UNIX: Find Out If File Exists With Conditional Expressions ...

日期：2025-04-28

16 Feb 2006 ... With the help of BASH shell and IF command it is possible to find out if file exists or not. Generally, this is known as conditional expressions....

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Test if a file exists with the BASH shell

日期：2025-04-26

27 Aug 2008 ... Often when shell scripting with BASH you need to test if a file exists (or ... [-f: command not found [: missing `]' No such file or directory syntax ......

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