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version.txt
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#!/bin/bash
while IFS='-' read apache log4j v1 path core version
do
#echo $line
#echo $version
if [ x"$version" \< x"2.17.1" ]; then
echo $apache-$log4j-$v1-$path-$core-$version
#awk '{print$0}'
fi
done < /tmp/log4j.txt
:<<EOF
防止出现语法错误。如果不写x，只用 if [ “${var}" == “0” ]来判断${var}的值，当${var}为空或未设置时，语句被解释为 if [ == "0" ]，出现语法错误。加上x后，当${var}为空或未设置时，解释为if [ “x" == "x" ] ，依然正确。
if [ “x${var}" == “x” ]整句的意思是判断${var}是否为空。
注意:在[]结构中"<"需要被转义.
if [[ "$a" > "$b" ]]
if [ "$a" \> "$b" ]
注意:在[]结构中">"需要被转义.
具体参考Example 26-11来查看这个操作符应用的例子.
➜ ~ echo "data-c(kuh-small1);divider-bin-1.4.4;divider-conf-1.3.3-w(1,16);storage-bin-1.5.4;storage-conf-1.5.0-w(1);worker-bin-4.5.1;worker-conf-4.4.1-c(kuh)-win2" | grep -Po '(?<=divider-bin-)[^;]+'
1.4.4
➜ ~ echo "data-c(kuh-small1);divider-bin-1.4;divider-conf-1.3.3-w(1,16);storage-bin-1.5.4;storage-conf-1.5.0-w(1);worker-bin-4.5.1;worker-conf-4.4.1-c(kuh)-win2" | grep -Po '(?<=divider-bin-)[^;]+'
1.4
➜ ~ cat /tmp/log4j.txt |grep -P '(?<=log4j-core-).*(?=.jar)'
apache-log4j-2.10.0-bin/log4j-core-2.10.0.jar
apache-log4j-2.11.0-bin/log4j-core-2.11.0.jar
apache-log4j-2.11.1-bin/log4j-core-2.11.1.jar
apache-log4j-2.11.2-bin/log4j-core-2.11.2.jar
apache-log4j-2.12.0-bin/log4j-core-2.12.0.jar
apache-log4j-2.12.1-bin/log4j-core-2.12.1.jar
apache-log4j-2.13.0-bin/log4j-core-2.13.0.jar
apache-log4j-2.13.1-bin/log4j-core-2.13.1.jar
apache-log4j-2.13.2-bin/log4j-core-2.13.2.jar
apache-log4j-2.13.3-bin/log4j-core-2.13.3.jar
apache-log4j-2.14.0-bin/log4j-core-2.14.0.jar
➜ shell ./version.sh
apache-log4j-2.10.0-bin/log4j-core-2.10.0.jar
apache-log4j-2.11.0-bin/log4j-core-2.11.0.jar
apache-log4j-2.11.1-bin/log4j-core-2.11.1.jar
apache-log4j-2.11.2-bin/log4j-core-2.11.2.jar
➜ ~ echo "Hello, XXXXXXXX world."|grep -P '(?<=Hello, ).*(?= world.)'
Hello, XXXXXXXX world.
➜ ~ echo "Hello, XXXXXXXX world."|grep -Po '(?<=Hello, ).*(?= world.)'
XXXXXXXX
homebrew安装路径
默认路径：/usr/local
查询路径： brew config | grep HOMEBREW
brew config|grep HOMEBREW
HOMEBREW_VERSION: 3.3.10-58-g069ab08
HOMEBREW_PREFIX: /usr/local
HOMEBREW_BOTTLE_DOMAIN: https://mirrors.aliyun.com/homebrew/homebrew-bottles
HOMEBREW_CASK_OPTS: []
HOMEBREW_CORE_GIT_REMOTE: https://github.com/Homebrew/homebrew-core
HOMEBREW_MAKE_JOBS: 12
ls -al /usr/local/bin/|grep grep
lrwxr-xr-x 1 lex admin 29 Jan 15 11:02 gegrep -> ../Cellar/grep/3.7/bin/gegrep
lrwxr-xr-x 1 lex admin 29 Jan 15 11:02 gfgrep -> ../Cellar/grep/3.7/bin/gfgrep
lrwxr-xr-x 1 lex admin 28 Jan 15 11:02 ggrep -> ../Cellar/grep/3.7/bin/ggrep
➜ ~ ls /usr/local/opt/grep/libexec/gnubin
egrep fgrep grep
➜ ~ /usr/local/opt/grep/libexec/gnubin/grep --version
grep (GNU grep) 3.7
Packaged by Homebrew
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Mike Haertel and others; see
<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>.
OK 现在
修改vi .zshrc
alias c='clear'
alias grep="/usr/local/opt/grep/libexec/gnubin/grep --color=auto"
alias ls="/usr/local/opt/coreutils/libexec/gnubin/ls --color=auto"
#gls --color=tty 或者 ls --color=tty
然后source .zshrc
➜ ~ grep --version
grep (GNU grep) 3.7
Packaged by Homebrew
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Mike Haertel and others; see
<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS
Reference:
https://stackoverflow.com/questions/16817646/extract-version-number-from-a-string
cat /tmp/log4j.txt |awk -F"-" '{if($NF ~ /2.17/)print$0}'
apache-log4j-2.14.1-bin/log4j-core-2.17.1.jar
apache-log4j-2.14.1-bin/log4j-core-2.17.2.jar
cat /tmp/log4j.txt|awk -F"-" '{if($3 > 2.11.2 ) print$0}'
apache-log4j-2.12.0-bin/log4j-core-2.12.0.jar
apache-log4j-2.12.1-bin/log4j-core-2.12.1.jar
apache-log4j-2.13.0-bin/log4j-core-2.13.0.jar
#对字符串匹配
cat /tmp/log4j.txt |awk -F"-" '{if($NF ~ /2.17.[1-9].jar/)print$0}'
取反
cat /tmp/log4j.txt |awk -F"-" '{if($NF !~ /2.17.[1-9].jar/)print$0}'
cat /tmp/log4j.txt |awk -F"-" '{if($NF ~ /2.17.[1-9]/)print$0}'
apache-log4j-2.14.1-bin/log4j-core-2.17.1.jar
apache-log4j-2.14.1-bin/log4j-core-2.17.7.jar
apache-log4j-2.14.1-bin/log4j-core-2.17.6.jar
apache-log4j-2.14.1-bin/log4j-core-2.17.3.jar
apache-log4j-2.14.1-bin/log4j-core-2.17.5.jar
apache-log4j-2.14.1-bin/log4j-core-2.17.4.jar
apache-log4j-2.14.1-bin/log4j-core-2.17.3.jar
比如下面是最后一个字段，但是这个是可以精确到渠道最后一个字断的值大小的
➜ ~ cat /tmp/log4j-1.txt
core-2.10.0
core-2.11.0
core-2.11.1
core-2.11.2
core-2.12.0
core-2.12.1
core-2.13.0
core-2.13.1
core-2.13.2
core-2.13.3
core-2.14.0
core-2.14.1
core-2.17.1
core-2.17.2
➜ ~ cat /tmp/log4j-1.txt|awk -F"-" '{if($NF > 2.13.2)print$0}'
core-2.14.0
core-2.14.1
core-2.17.1
core-2.17.2
EOF