sed -i 's/cmd = \[\"logrotate\", _file\]/cmd = \[\"logrotate\", _file, \"-s\", \"\/tmp\/logrotate.status\"\]/g' /usr/bin/logrotate.py
时间: 2024-07-07 08:00:21 浏览: 153
这个命令是使用sed(stream editor)工具对文件进行文本替换。`sed -i 's/.../.../g' /usr/bin/logrotate.py`的含义是:
- `sed`: 这是stream editor的简称,用于在数据流中进行文本处理。
- `-i`: 表示直接在原文件上进行修改,不创建备份。如果想要在原文件之外生成新文件,可以省略`-i`,然后指定一个后缀如`.bak`。
- `'s/.../.../g'`: 这是sed的基本替换模式,`s`代表substitute(替换),`/cmd = \[\"logrotate\", _file\]/`是查找的内容(查找模式),`/cmd = \[\"logrotate\", _file, \"-s\", \"\/tmp\/logrotate.status\"\]/`是替换成的内容(替换为),`g`表示全局替换,即找到所有匹配项都替换。
- `/usr/bin/logrotate.py`: 要处理的文件路径,这里是`/usr/bin/logrotate.py`,这个脚本可能包含`cmd = [\"logrotate\", _file]`这样的结构,该命令会将这行代码中的`_file`参数后面添加`"-s", "/tmp/logrotate.status"`,使其调用logrotate时增加一个`s`标志,用于指定状态文件的位置。
相关问题
if grep -q "PASS_MIN_DAYS" /etc/login.defs then sed -i '/PASS_MIN_DAYS/s/^#//' /etc/login.defs sed -i "s/PASS_MIN_DAYS.*/PASS_MIN_DAYS 6/g" /etc/login.defs fi if grep -q "PASS_MIN_LEN" /etc/login.defs then sed -i '/PASS_MIN_LEN/s/^#//' /etc/login.defs sed -i "s/PASS_MIN_LEN.*/PASS_MIN_LEN 8/g" /etc/login.defs fi if grep -q "PASS_MAX_DAYS" /etc/login.defs then sed -i '/PASS_MAX_DAYS/s/^#//' /etc/login.defs sed -i "s/PASS_MAX_DAYS.*/PASS_MAX_DAYS 90/g" /etc/login.defs fi if grep -q "PASS_WARN_AGE" /etc/login.defs then sed -i '/PASS_WARN_AGE/s/^#//' /etc/login.defs sed -i "s/PASS_WARN_AGE.*/PASS_WARN_AGE 7/g" /etc/login.defs fi if grep -q "Protocol" /etc/ssh/sshd_config then sed -i '/Protocol/s/^#//' /etc/ssh/sshd_config sed -i "s/Protocol.*/Protocol 2/g" /etc/ssh/sshd_config else echo 'Protocol 2' >> /etc/ssh/sshd_config fi
以下是将这些命令转换为Python代码的示例:
```python
import subprocess
login_defs_file = '/etc/login.defs'
ssh_config_file = '/etc/ssh/sshd_config'
# Update PASS_MIN_DAYS in login.defs file
if subprocess.call('grep -q "PASS_MIN_DAYS" /etc/login.defs', shell=True) == 0:
subprocess.call("sed -i '/PASS_MIN_DAYS/s/^#//' /etc/login.defs", shell=True)
subprocess.call("sed -i 's/PASS_MIN_DAYS.*/PASS_MIN_DAYS 6/g' /etc/login.defs", shell=True)
# Update PASS_MIN_LEN in login.defs file
if subprocess.call('grep -q "PASS_MIN_LEN" /etc/login.defs', shell=True) == 0:
subprocess.call("sed -i '/PASS_MIN_LEN/s/^#//' /etc/login.defs", shell=True)
subprocess.call("sed -i 's/PASS_MIN_LEN.*/PASS_MIN_LEN 8/g' /etc/login.defs", shell=True)
# Update PASS_MAX_DAYS in login.defs file
if subprocess.call('grep -q "PASS_MAX_DAYS" /etc/login.defs', shell=True) == 0:
subprocess.call("sed -i '/PASS_MAX_DAYS/s/^#//' /etc/login.defs", shell=True)
subprocess.call("sed -i 's/PASS_MAX_DAYS.*/PASS_MAX_DAYS 90/g' /etc/login.defs", shell=True)
# Update PASS_WARN_AGE in login.defs file
if subprocess.call('grep -q "PASS_WARN_AGE" /etc/login.defs', shell=True) == 0:
subprocess.call("sed -i '/PASS_WARN_AGE/s/^#//' /etc/login.defs", shell=True)
subprocess.call("sed -i 's/PASS_WARN_AGE.*/PASS_WARN_AGE 7/g' /etc/login.defs", shell=True)
# Update Protocol in sshd_config file
if subprocess.call('grep -q "Protocol" /etc/ssh/sshd_config', shell=True) == 0:
subprocess.call("sed -i '/Protocol/s/^#//' /etc/ssh/sshd_config", shell=True)
subprocess.call("sed -i 's/Protocol.*/Protocol 2/g' /etc/ssh/sshd_config", shell=True)
else:
subprocess.call("echo 'Protocol 2' >> /etc/ssh/sshd_config", shell=True)
```
上述代码首先检查是否存在`/etc/login.defs`文件中的`PASS_MIN_DAYS`行,如果存在,则将其注释去除,并将`PASS_MIN_DAYS`的值设置为6。接着,检查是否存在`PASS_MIN_LEN`行,如果存在,则将其注释去除,并将`PASS_MIN_LEN`的值设置为8。然后,检查是否存在`PASS_MAX_DAYS`行,如果存在,则将其注释去除,并将`PASS_MAX_DAYS`的值设置为90。最后,检查是否存在`PASS_WARN_AGE`行,如果存在,则将其注释去除,并将`PASS_WARN_AGE`的值设置为7。
然后,检查是否存在`/etc/ssh/sshd_config`文件中的`Protocol`行,如果存在,则将其注释去除,并将其值设置为2。如果不存在,则在文件末尾添加一行`Protocol 2`。
请确保你具有足够的权限来执行这些操作,并将需要修改的文件路径正确添加到`login_defs_file`和`ssh_config_file`变量中。运行代码后,命令将被执行。
su nova -s /bin/sh -c "nova-manage cell_v2 create_cell --name cell1 --verbose" An error has occurred: Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/nova/cmd/manage.py", line 2708, in main ret = fn(*fn_args, **fn_kwargs) File "/usr/lib/python2.7/site-packages/nova/cmd/manage.py", line 1441, in create_cell disabled=disabled) File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 307, in __init__ setattr(self, key, kwargs[key]) File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/base.py", line 72, in setter field_value = field.coerce(self, name, value) File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/fields.py", line 209, in coerce return self._type.coerce(obj, attr, value) File "/usr/lib/python2.7/site-packages/oslo_versionedobjects/fields.py", line 275, in coerce return six.text_type(value) UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position 49: ordinal not in range(128)
根据错误提示,这是一个UnicodeDecodeError错误,指定的字符串无法正确解码为ASCII字符集。可能是由于在字符串中使用了非ASCII字符,导致解码失败。您可以尝试使用Python的unicode()函数将字符串转换为Unicode格式,以避免此问题。您可以尝试使用以下命令:
su nova -s /bin/sh -c "nova-manage cell_v2 create_cell --name cell1 --verbose" 2>&1 | LC_ALL=C sed -n '1!p'
该命令将通过管道将错误输出重定向到sed命令。该sed命令将删除第一行并输出其余行,以便您可以更轻松地查看错误信息。
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