if stat "/path/to/file" >/dev/null 2>&1; then echo "File exists." else echo "File does not exist." fi 在这个语法中：stat "/path/to/file" 是检索指定路径下的文件信息的命令；>/dev/null 2>&1用于抑制 stat 命令生成的输出和错误消息，确保该命令不会
BashBites:Check Files Check a file exists 1 2 3 4 5 6 7 1. 2. 3. 4. 5. 6. 7. #!/bin/bashif [[ -e /tmp/adb.log ]]then echo "Exists"else echo "Not Exists"fi 1. Check Empty String 1 2 3 4 5 6 1. 2. 3. 4. 5. 6. if [[ -z "$emptyString" ]]then echo "...
我有一个名为"list.txt“的文件,上面有员工的名字--大多数都是"Raj",我想在bash中创建一个名为"findRaj.sh“的脚本-该脚本应捕获"list.txt”中的所有"Raj“行,并将其存储在名为"newlist.txt”的新文件中。data/list.txt; then echo "File exists"; els 浏览0提问于2020-02-21得票数 0 19回答 检查...
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 to test if a file is a directory. For example, to check if the /etc/filetocheck directory exists, you can use: NOTE: You can also...
问Bash Shell sftp在创建之前检查目录是否存在EN本文主要讲述如何使用Shell脚本判断HDFS文件或目录是否存在，...
if [ -f $file ] then echo "File exists" else echo "File does not exist" fi # Check if a command is successful if ls then echo "Command succeeded" else echo "Command failed" fi ``` 通过使用if-else语句,用户可以根据不同的条件执行不同的操作。这使得Bash脚本更加灵活和强大,可以满足各种不...
$> bash check_interactive.sh Not interactive $> bash -c"source check_interactive.sh"Not interactive 在Bash 中,source <文件名>是在当前 bash shell 进程内执行脚本,效果和直接敲里面的命令一样,所以是交互模式。而bash <文件名>是启动一个新的 bash 进程执行脚本,所以是非交互模式。
fsck:File system check uname:Unix name lsmod:List modules mv:Move file cp:Copy file ln:Link files fg:Foreground bg:Background chown:Change owner chgrp:Change group chmod:Change mode umount:Unmount dd: 本来应根据其功能描述"Convert an copy"命名为"cc",但"cc"已经被用以代表"CComplier",所以命名...
Now let’s perform a similar check,but with thetest [command: $ if [ -x a.out ]; then echo "File is executable"; else echo "File is not executable"; fi File is executable So, thetest‘sxflag proves if the file exists and is executable. ...
When bash is invoked as an interactive login shell, or as a non-interactive shell with the --login option, it first reads and executes commands from the file /etc/profile, if GNU Bash-4.1 Last change: 2009 December 29 3 User Commands BASH(1) that file exists. After reading that file,...