Drezil/Bash-Oneliner
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add "system" and "other" commands:

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- auditctl
- df
- identify
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bonnie 2020-02-15 23:32:16 +08:00
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README.md
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@ -1271,6 +1271,16 @@ xcowsay
## System ## System
[[back to top](#handy-bash-one-liners)] [[back to top](#handy-bash-one-liners)]
##### Audit files to see who made changes to a file [RedHat based system only]
```bash
# To audit a directory recursively for changes (e.g. myproject)
auditctl -w /path/to/myproject/ -p wa
# If you delete a file name "VIPfile", the deletion is recorded in /var/log/audit/audit.log
sudo grep VIPfile /var/log/audit/audit.log
#type=PATH msg=audit(1581417313.678:113): item=1 name="VIPfile" inode=300115 dev=ca:01 mode=0100664 ouid=1000 ogid=1000 rdev=00:00 nametype=DELETE cap_fp=0000000000000000 cap_fi=0000000000000000 cap_fe=0 cap_fver=0
```
##### Check out whether SELinux is enabled ##### Check out whether SELinux is enabled
```bash ```bash
sestatus sestatus
@ -1631,6 +1641,11 @@ du -h
du -sk /var/log/* |sort -rn |head -10 du -sk /var/log/* |sort -rn |head -10
``` ```
##### Show all file system type
```bash
df -TH
```
##### Show current runlevel ##### Show current runlevel
```bash ```bash
runlevel runlevel
@ -1729,6 +1744,9 @@ group username
##### Show uid, gid, group of user ##### Show uid, gid, group of user
```bash ```bash
id username id username
# variable for UID
echo $UID
``` ```
##### Check if it's root ##### Check if it's root
@ -2606,6 +2624,12 @@ while read a b; do yes $b |head -n $a ;done <test.txt
## Others ## Others
[[back to top](#handy-bash-one-liners)] [[back to top](#handy-bash-one-liners)]
##### Describe the format and characteristics of image files.
```bash
identify myimage.png
#myimage.png PNG 1049x747 1049x747+0+0 8-bit sRGB 1.006MB 0.000u 0:00.000
```
##### Bash auto-complete (e.g. show options "now tomorrow never" when you press'tab' after typing "dothis") ##### Bash auto-complete (e.g. show options "now tomorrow never" when you press'tab' after typing "dothis")
[More examples](https://iridakos.com/tutorials/2018/03/01/bash-programmable-completion-tutorial.html) [More examples](https://iridakos.com/tutorials/2018/03/01/bash-programmable-completion-tutorial.html)
```bash ```bash