forcurrent_file in"$@"; do process_file"$current_file"|| continue done 示例运行和输出 文件缺失 $ ./process_files.sh file1.csv file2.csv Error: file1.csv is missing or empty. Processing file2.csv... 损坏文件 $ ./process_files.sh file1.csv corrupt_file.csv Processing file1.csv......
In this part, we demonstrate how to delete a file or directory using the Linux command line. But before we do this, we must first open the terminal. Before we can remove a folder or director, we must first know its name. Therefore, we must first execute the “ls” command in the te...
要使用bash将文件中的行数写到单独文件中的一行,可以使用以下命令: ```bash wc -l < 文件名 > 行数文件名 ``` 解释如下: - `wc -l`命令用于统计文件中的行数。 - ...
"$folder") # 判断文件夹是否为查询的路径本身 if [[ "$folder...= "$path" ]]; then # 进入文件夹 cd "$folder" # 删除三天前的日志文件 find .../bin/bash # SVN仓库路径 svn_repo_path="/data/svn/xxx" # 备份保存目录 backup_dir="/data/svn-backup" # 备份文件名 backup_file 23351...
echo "Size of the files in the folder: " ls -lh echo "Last line of the file: " tail -n 1 file1.txt echo "Adding a new line:" echo -n "Mauris tempus quis est vitae eleifend." >> file1.txt Output: Explanation:Here, we can see that the new last line has changed from Cras...
#shell判断文件夹是否存在 #如果文件夹不存在,创建文件夹 if [ ! -d "/myfolder" ]; then mkdir /myfolder fi #shell判断文件,目录是否存在或者具有权限 folder="/var/www/" file="/var/www/log" # -x 参数判断 $folder 是否存在并且是否具有可执行权限 if [ ! -x "$folder"]; then mkdir "$fol...
scp -r user@host:directory/source_folder farget_folder 1. 2. 此命令还接受-P选项可用于连接到特定的端口。 scp -P port user@host:directory/source_file target_file 1. 2. Basic Shell Programming 在bash中你将编写第一行脚本文件,被叫做shebang。任何脚本中的这一行来确定脚本的执行能力,如独立的可...
As you've seen before, these commands take a -n flag, which stands for --lines, that restrict the number of lines in the output. tail also takes a -f flag where f stands for --follow which outputs appended data as lines are added to the end of the file. This is particularly conve...
drwxr-xr-x4zwt staff128May1622:20 test_directory -rwxr--r--1zwt staff0May1910:35 testfile# count how many folder and files in current dir%ls-l|wc-l10%ls-l*.txt -rw-r--r--1zwt staff51May1622:35 data.txt -rw-r--r--1zwt staff123May1622:25 example.txt ...
#!/bin/bash #change the value of a certain variable sed -i -e's/^VAR2=.*$/VAR2="another-value"/gi'/folder/file #add a new variable to the variable declaration area, using one existing variable as a reference point sed -i -e'/^VAR2=/i \NEW_VAR="another-value"'/folder/file...