我需要帮助在bash脚本中用分隔符“,”分割字符串,忽略分隔符前后的空格。
My string looks like below and ',' is delimiter.
mystring = < hostname1, hostname 2 , hostname value 3 >
Notice that
1. 'hostname1' has extra space in front
2. 'hostname 2' and 'hostname value 3' have extra spaces i
我有一份文件,内容如下:
H 200:hostname1,hostname2,hostname3
H 400:hostname4,hostname1,hostname5
H 500:hostname2,hostname6,hostname4,hostname7
H 700: hostname7 8,hostname5,hostname2,hostname7
我需要从整个文件中删除重复的主机名,输出应该如下所示,其中每一行都包含唯一的主机名:
H 200:hostname1,hostname2,hostname3
H 400:hostname4,hostname5
H 500:hostname6
当我尝试我的字符串时,我得到了以下错误:
Warning: strtolower() expects parameter 1 to be string, object given in
当我做var_dump()时,它告诉我字符串应该是字符串?
string(21) "This IS a Test String"
下面是一些代码:
protected $hostname;
public function __construct($hostname)
{
//$this->hostname = $hostname;
$this->hostname
我正在尝试使用java keytool,但是我不知道如何设置主机名。
这就是我尝试的方法:
hostname[username:/this/is/a/path][640]% keytool -keystore server.keystore -genkeypair -alias hostname
Enter keystore password:
Re-enter new password:
What is your first and last name?
[Unknown]: hostname
What is the name of your organizational unit?
我刚刚设置了hadoop集群(namenode +一个datanode)。但是,当我尝试启动hdfs时,会出现以下错误:
hadoop@namenode:/opt/hadoop-2.2.0$ start-dfs.sh
14/01/30 20:18:50 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [Java HotSpot(TM) 64-
我想知道他们中哪一个更有pythonic/效率。
a)
HostName = [item.lstrip().strip('.').encode('ascii') for item in HostName]
b)
for i in range(len(HostName)):
HostName[i] = HostName[i].lstrip()
HostName[i] = HostName[i].strip('.')
HostName[i] = HostName[i].encode('ascii')
当我尝试使用以下方法启动dfs时:
start-dfs.sh
我说错了:
14/07/03 11:03:21 WARN util.NativeCodeLoader: Unable to load
native-hadoop library for your platform... using builtin-java classes
where applicable Starting namenodes on [OpenJDK 64-Bit Server VM
warning: You have loaded library
/usr/local/hadoop/lib/native/libha
需要帮助。我已经找了整整一天了,没有找到适合我需要的解决方案。
在档案中:
Lots
of
other
lines
...
...
# Client=HOSTNAME@ ..........1323 <- Do not include '# Client=HOSTNAME'
# Client=HOSTNAME@ ..........123123 <- Do not include '# Client=HOSTNAME'
Client=hostname1@ ....rndChars.... <- delete line
Client=ho
在一个文件中,我有这样的结构:
192.168.1.53 # hostname, city, state
192.168.1.101 # hostname, city, state
192.168.1.10 # hostname, city, state
192.168.1.18 # hostname, city, state
192.168.1.19
192.168.1.104 # hostname, city, state
如果没有'#‘但在ip之后替换,我如何使用sed查找和替换,然后移动到缺少'#’的下一个。
所以它看起来如下所示:
192.168.1.53 # ho
这是我正在尝试的代码。所以我猜其他文件正在被覆盖,尽管我试图移动它们,但这不是workeD?
for /f "usebackq tokens=1-8 delims=," %%a in ("chassisinfo.csv") do (
set hostname=%%a
set FQDN=%%b
set MGMT=%%c
set SUB=%%d
set gw=%%e
set dns=%%f
set vlan=%%g
echo # Seans scripted installation file > ks_%hostname%.cfg
echo # >
我正在寻找一种只显示基于计数的查询结果的方法。我有以下几点:
# Returns expected number
SELECT systems.hostname AS Hostname, systems.date AS "Last Checked In", count(systems2updates.2package) AS "Needed Updates"
FROM systems2updates RIGHT JOIN systems on systems2updates.2hostname=systems.hostname
GROUP BY system
我有下面的代码,我觉得这是不太合奏的:
old_hostname = None
for i, row in dupes.iterrows():
if i == 0:
old_hostname = row['Hostname']
else:
if row['Hostname'] != old_hostname:
print('-----')
print(f"{row['Name']:<32} {row['MAC']:<
我想在Fortran代码中使用$HOSTNAME环境变量的值。
我这样做的尝试是:
CHARACTER(LEN=100) :: hostname
INTEGER :: status_value = 0
CALL GET_ENVIRONMENT_VARIABLE("hostname",hostname, STATUS=status_value)
IF (status_value == 2) THEN
WRITE(nout,*) 'WARNING: Processor does not support environment var