在BASH脚本中,我们可以使用循环结构来遍历文件中的每一行,并使用IF语句进行条件判断。一种常见的循环结构是for循环,下面是一个示例: 代码语言:txt 复制 #!/bin/bash # 文件路径 file_path="/path/to/file.txt" # 使用for循环遍历文件中的每一行 for line in $(cat $file_path) do # 在这里可以...
for Line in 1 3 6 12;do UserName=`head -$Line /etc/passwd | tail -1 | cut -d: -f1` Uid=`head -$Line /etc/passwd | tail -1 | cut -d: -f3` Shell=`head -$Line /etc/passwd | tail -1 | cut -d: -f7` echo "User:$UserName,UID:$Uid,SHELL:$Shell" done 1. 2. 3. ...
With the loop, you can repeat entire sets of commands an unlimited number of times as you wish. To do this, do not look for complex programming languages, just use a simple bash script, so you can use a bash for loop through lines in a file. The syntax of reading file line by line...
Reading a file line by line allows you to effectively process a file's contents and output each line as an element in a list. After displaying each line separately, search for or match any specific content easily. One of the ways to read a text file in individual lines is to use the ...
while read -r line; do printf '%s\n' "$line" done < "file" 循环文件和目录 不使用ls. 代码语言:txt 复制 # Greedy example. for file in *; do printf '%s\n' "$file" done # PNG files in dir. for file in ~/Pictures/*.png; do ...
#read onefileline by lineforlinein$(cattest1.txt);doecho$line ;done; #whilereadsplitline by spacewhileread linedoforwordin$linedoecho$worddone;done<test1.txt #stringsplitor substring input=type=abcdefgecho$input; #get abcdefgecho$input |cut-d'='-f2echo$input |cut-d'='-f2#${variable...
while read line do if [ ! "$line" = "" ] then keyval=(${line//|/ }) key=${keyval[0]} val=${keyval[1]} keywords[$key]=$val fi done < $keyfile mapfile myarr < $transfile for line in ${myarr[@]}; do numbers=(${line//|/ }) ...
while read -r line; do printf '%s\n' "$line" done < "file"循环遍历文件和目录不要ls.# 遍历当前目录下的文件和目录. for file in *; do printf '%s\n' "$file" done # 遍历目录中的png图片. for file in ~/Pictures/*.png; do printf '%s\n' "$file" done # 迭代输出目录. for dir...
for file in "$source_dir"/*; do if [ -f "$file" ]; then tar -czf "${file}.tar.gz" "$file" fi done echo "文件已压缩" ``` 7. 统计某个文件中特定字符串出现的次数: ```bash #!/bin/bash file="/path/to/file" search_string="example" count=0 while read -r line; do if ...
Bashly then automatically generates a bash script (when you runbashly generate) that can parse and validate user input, provide help messages, and run your code for each command. Your code for each command is kept in a separate file, and can be merged again if you change it (example). ...