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How do I set a variable to the output of a command in Bash?
...users[uid] "%11d %7d %-20s %s\n" $uid $gid $user $home
done {list}</etc/passwd
Then
echo -n "${users[@]}"
1000 1000 user /home/user
...
65534 65534 nobody /nonexistent
and
echo ${!users[@]}
1000 ... 65534
echo -n "${users[1000]}"
1000 1000 user /h...
How do you run a crontab in Cygwin on Windows?
...TEM. Poor SYSTEM therefore needs a home directory and a shell. The “/etc/passwd” file will define them.
$ mkdir /root
$ chown SYSTEM:root /root
$ mcedit /etc/passwd
SYSTEM:*:......:/root:/bin/bash
The start the service:
$ cron-config
Do you want to remove or reinstall it (yes/no) yes
Do you ...
Check Whether a User Exists
...
Why don't you simply use
grep -c '^username:' /etc/passwd
It will return 1 (since a user has max. 1 entry) if the user exists and 0 if it doesn't.
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Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...(~)
10. 比较表达式
11. 范围模板
12. 一个验证passwd文件有效性的例子
13. 几个实例
14. awk编程
14.1. 变量
14.2. BEGIN模块
14.3. END模块
14.4. 重定向和管道
14.5. 条件语句
...
How to gzip all files in all sub-directories into one compressed file in bash
...d how things are tarred up/extracted, for example if I run
cd ~
tar -cvzf passwd.tar.gz /etc/passwd
tar: Removing leading `/' from member names
/etc/passwd
pwd
/home/myusername
tar -xvzf passwd.tar.gz
this will create
/home/myusername/etc/passwd
unsure if all versions of tar do this:
Remo...
Meaning of tilde in Linux bash (not home directory)
... is usually controlled by NSS; so by default values are pulled out of /etc/passwd, though it can be configured to retrieve the information using any source desired, such as NIS, LDAP or an SQL database.
Tilde expansion is more than home directory lookup. Here's a summary:
~ $HOME
~fred ...
Http Basic Authentication in Java using HttpClient?
... HttpGet httpGet = new HttpGet("https://httpbin.org/basic-auth/user/passwd");
String encoding = DatatypeConverter.printBase64Binary("user:passwd".getBytes("UTF-8"));
httpGet.setHeader("Authorization", "Basic " + encoding);
HttpResponse response = Client.execute(httpGe...
Most Pythonic way to provide global configuration variables in config.py? [closed]
...lding them with lambda functions to reduce code. Like this:
User = lambda passwd, hair, name: {'password':passwd, 'hair':hair, 'name':name}
#Col Username Password Hair Color Real Name
config = {'st3v3' : User('password', 'blonde', 'Steve Booker'),
'blubb' : User('123...
Mongod complains that there is no /data/db folder
...:
First check what user and group your mongo user has:
# grep mongo /etc/passwd
mongod:x:498:496:mongod:/var/lib/mongo:/bin/false
You should have an entry for mongod in /etc/passwd , as it's a daemon.
sudo chmod 0755 /data/db
sudo chown -R 498:496 /data/db # using the user-id , group-id
Yo...
Confused about stdin, stdout and stderr?
... these files can be easily redirected from the shell, like this:
cat /etc/passwd > /tmp/out # redirect cat's standard out to /tmp/foo
cat /nonexistant 2> /tmp/err # redirect cat's standard error to /tmp/error
cat < /etc/passwd # redirect cat's standard input to /etc/pass...