1. There is a text test.log, content that is: 1 an A 2 b B 3 c C 2. Execute while to get normal output cat test.log |while read item;do echo $item;done 1 an A 2 b B 3 c C 3. But executing while+awk loses the first line cat test.log |while r...
for example, the following result is horizontal usr java jdk1.8.0_51 bin jstat -gc 24954 S0C S1C S0U S1U EC EU OC OU MC MU CCSC CCSU YGC YGCT FGC FGCT GCT 2048.0 2048.0 1675.5 0....
now the requirement is to write a log file. I want to record the running command of the python script at the beginning of the log file. For example, my command line call command is python3 test.py-a hellow-b wolrd . I want to record the string "log-a ...
The code has only one line, as follows, IP is written by me blindly, and there is no in order to see it take effect. var_dump(exec(sprintf( usr sbin iptables -I INPUT -s %s -j DROP , 43.1.1.1 ))); 1 browser access, no effect write, feedback in...
scenario: the shell script completes the ETL work. The data extraction, transformation and loading operations correspond to three subscripts, all of which are atomic operations and need to be logged. idea: call multiple child scripts to control the wor...
I tried to change the easyrsa script local work_dir="${EASYRSA:-$err_source}" local pki_dir="${EASYRSA_PKI:-$err_source}" set_var EASYRSA "${0% *}" none of these three works. it is also wrong to try the script ...
for example a=`set_var EASYRSA "${0% *}"`; echo a; set_var EASYRSA "${0% *}" set_var EASYRSA "${0% *}" Thank you. printing tabs directly will not change, once the assignment tabs will change space...
quote= " ; function t() { echo "${1}" echo "${2}" echo "${3}" } a="xxx yyy"; b="yyy zzz"; c="aaa.bbb"; cmd= t ${quote}${a}${quote},${quote}${b}${quote},${quote}${c}${quote} ev...
take easyrsa. I remember it was 2 at first, and then 3 . If 3, the directory originally copied has the version number, and the latest usr share easy-rsa file directory has changed, and the version number has been moved to a subdirectory. so it cha...
want to test the running script pause function copied an online script https: www.cnblogs.com zqb-a. -sharp! bin bash -sharp! bin stty PATH= bin: sbin: usr bin: usr sbin: usr local bin: usr local sbin:~ bin export PATH -sharptest function get_...
every time I right-click "cmder here " in the directory and open it, my cmder is in the root directory instead of in the current directory. How to solve this problem? my configuration: ...
windows system, the computer has a fixed network to connect to the company s internal network, and wifi to connect to the external network. wants to make a switching device. If the wifi is already connected to the public network, then netsh wlan discon...
using the Yii2.0 framework, the server executes the following command directly to suspend the daemon normally. At that time, it often hangs up automatically after running for a few days nohup phpstudy www llq yii queue start & now a script has ...
cannot press enter when expect is running? script such as -sharp! usr bin expect set timeout 30 spawn bash centos7_client.sh expect { "sharon@192.168.27.156 s password:" {send "pwd r" ; exp_continue } } expe...
the following two sentences, the first sentence can open the browser normally, the second sentence pops up an error dialog box, click OK is useless, can not be closed. The problem is the second sentence, how to not let it pop up the dialog box, but retu...
su - root -s $SHELLPATH root users will report an error when executing, and permission denied pops up. but use directly source $SHELLPATH can be executed what is the reason for this? Thank you. ...
because you have switched to the user on the other side of the server, is there any good solution? Thank you. ...
I use ssh-copy-id "-p $SERVERPORT -i home $USERNAME .ssh vpn-server.key.pub $SERVERUSERNAME@$SERVERIPV4" or ssh-copy-id -i home $USERNAME .ssh vpn-server.key.pub "-p $SERVERPORT $SERVERUSERNAME@$SERVERIPV4" is not correct ...
there is a CSV, that lists the time. I want to count the number of rows that appear every ten minutes (or every 30 minutes). For example, how many pieces are there in 00-00-00-00-09 and 00-00-00-00-19? Count by linux. ...
Let s say the following code: myfunc() { cat grep " ->" | while read line do echo $line done } ls -la | myfunc It will work since you only cat once as you can only read once from stdin. But if you: myfunc() { ...
with regard to the this direction of the arrow function, I have always used Ruan Yifeng s big judgment criterion: : : according to Ruan Da s criteria, test3 should output obj, and the results of test1 and test2 caused my brain to shut down. I am n...
What s the difference between function Foo () and function Object () and function Function () in the figure? ...
after CSS input sets the readonly property, the custom keyboard pops up. The oninput event cannot listen for changes in input input text, and the event cannot be called. <input type= "text " class= "input_text_gapfilling " id...
There is an one-to-one relationship between the data elements in the linear structure, but there are two pointers stored in the nodes of the two-way linked list, pointing to the address of the previous node and the address of the latter node, respective...
scenario requirements A Container runs a nginx control service for reading and writing nginx configuration files B Container runs a nginx service based on built by alpine. question now the question arises: how does Container A restart the nginx ...