78 lines
1.5 KiB
Bash
78 lines
1.5 KiB
Bash
#!/bin/bash
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## for 2016-07-11
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## http://www.aqzt.com
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##email: ppabc@qq.com
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##robert yu
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##centos 6和centos 7
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##循环判断两文件，差集内容
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for File in `cat aaa.txt`; do
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f=`cat 222.log |grep "$File"`
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if [ ! -n "$f" ]; then echo "$File" ; fi
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##if [ "$f" == "" ]; then echo "$File" ; fi
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done
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##linux shell 按行循环读入文件
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printf "*************************************\n"
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echo " cat file whiel read line"
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cat test.txt |while read line
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do
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echo $line;
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done
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printf "*************************************\n"
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echo "while read line <file"
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while read line
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do
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echo $line;
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done <test.txt
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printf "*************************************\n"
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echo "for line in cat test.txt"
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SAVEIFS=$IFS
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IFS=$(echo -en "\n")
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for line in $(cat test.txt)
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do
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echo $line;
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done
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IFS=$SAVEIFS
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#生成192.168.10.1到192.168.10.254 IP列表
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for((i=1;i<=254;i++));do echo 192.168.10.$i;done
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for((i=1;i<=10;i++));do echo $(expr $i \* 4);done
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#在shell中常用的是 for i in $(seq 10);do echo $i;done
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for i in `ls`;do echo $i;done
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for i in ${arr[@]};do echo $i;done
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for i in $* ;do echo $i;done
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##循环打印某文件内容
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for File in /proc/sys/net/ipv4/conf/*/accept_redirects; do
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echo $File
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done
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#直接指定循环内容
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for i in f1 f2 f3 ;do
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echo $i
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done
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##C 语法for 循环
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for (( i=0; i<10; i++)); do
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echo $i
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done
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##批量修改文件后缀，conf改cfg
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for i in *.conf;do mv $i $(sed "s/conf/cfg/" <<<$i);done
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##for循环每秒执行脚本
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#!/bin/bash
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while true; do
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sudo sh /data/shell/check_slave.sh
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sleep 1
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done
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