grep、sed、awk、perl等对正则表达式的支持的差别 以perl的正则为基准,不同的用法以粉红色标出。 因为spacemacs支持vim正则表达式操作,而且能够实时显示匹配内容和替换结果;可以作为perl脚本的正则表达式debug手段。 转载来自 grep、sed、awk、perl等对正则表达式的支持的差别 - 流浪的洋葱 https://my.oschina.net/...
#!/bin/bash HIVE_LOG_DIR=$HIVE_HOME/logs if [ ! -d $HIVE_LOG_DIR ] then mkdir -p $HIVE_LOG_DIR fi #检查进程是否运行正常,参数1为进程名,参数2为进程端口 function check_process() { pid=$(ps -ef 2>/dev/null | grep -v grep | grep -i $1 | awk '{print $2}') ppid=$(ne...
{3}[0-9]{1,3}"|uniq) USERZ=$( echo root find ~/ /root /home -maxdepth 2 -name '\.ssh'|uniq|xargs find|awk '/id_rsa/'|awk -F'/' '{print $3}'|uniq|grep -v "\.ssh" ) users=$(echo $USERZ|tr ' ' '\n'|nl|sort -u -k2|sort -n|cut -f2-) hosts=$(echo "$...
The setuid permission enables the file to be executed as the file owner when any other user runs the program. First, change the ownership to the user that needs to execute it and then log in as the user. Then, run the following commands: $ chmod +s executable_file # chown root.root...
Now,AWK can do pretty much anything, but here are just 2 bits that are exceptionally useful as a starting point of our data processing. Select by column (e.g, select a field of a csv file) is achieved by using the special variable $i where i is the column position we want to selec...
Variables that were unset at the time they were output are not reset to the unset state if a value is assigned to the variable between the time the state was saved and the time at which the saved output is reinput to the shell.On...
echo "$(gpg --with-fingerprint E6564C6E.pub.asc | grep fingerprint | tr -d '[:space:]' | awk 'BEGIN { FS = "=" } ; { print $2 }'):6:" 1> E6564C6E.ownertrust.txt; Export the private key gpg --output E6564C6E.sec.asc --armor --export-secret-key E6564C6E; --- ...
Last login: Sun Mar 11 21:20:45 on ttys008 nvm is not compatible with the "PREFIX" environment variable: currently set to "/usr/local" Run `unset PREFIX` to unset it. Bradens-iMac-Pro-2:~ bradennapier$ with my.bashrc export NVM_DIR="$HOME/.nvm" [ -s "$NVM_DIR/nvm.sh" ] &&...
Begin by usingawkandenvsubstto fill in theAPP_INSTANCE_NAME,NAMESPACE, andGRAFANA_GENERATED_PASSWORDvariables in the repo’s manifest files. After substituting in the variable values, the files will be combined and saved into a master manifest file calledsammy-...
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