https://github.com/pforret/rexec
repeat a command and be alerted when the output changes
https://github.com/pforret/rexec
bash bashew shell-script
Last synced: 6 months ago
JSON representation
repeat a command and be alerted when the output changes
- Host: GitHub
- URL: https://github.com/pforret/rexec
- Owner: pforret
- License: mit
- Created: 2021-02-12T13:31:42.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2022-10-24T20:44:26.000Z (almost 3 years ago)
- Last Synced: 2025-03-24T13:36:08.803Z (7 months ago)
- Topics: bash, bashew, shell-script
- Language: Shell
- Homepage:
- Size: 2.03 MB
- Stars: 8
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
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README
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# repeat
check a command/file repeatedly and be alerted when the output changes
## 🚀 Installation
with [basher](https://github.com/basherpm/basher)
$ basher install pforret/repeat
or with `git`
$ git clone https://github.com/pforret/repeat.git
$ cd repeat
$ ./repeat
## 🔥 Usage
```
Program : rexec.sh by peter@forret.com
Version : v1.1.0 (2022-10-24 21:59)
Purpose : repeat and observe changes
Usage : rexec.sh [-h] [-q] [-v] [-f] [-d] [-e] [-l ] [-t ] [-n ] [-w ]
Flags, options and parameters:
-h|--help : [flag] show usage [default: off]
-q|--quiet : [flag] no output [default: off]
-v|--verbose : [flag] also show debug messages [default: off]
-f|--force : [flag] do not ask for confirmation (always yes) [default: off]
-d|--diff : [flag] diff the change in output instead of just showing the new output [default: off]
-e|--erase : [flag] erase last output (first call always shows up) [default: off]
-l|--log_dir > : [option] folder for log files [default: /home/pforret/log/rexec]
-t|--tmp_dir > : [option] folder for temp files [default: /tmp/rexec]
-n|--number > : [option] number of times to repeat the command [default: 1000]
-w|--wait > : [option] seconds to wait between repeating the command [default: 5]
: [choice] action to perform [options: run,file,check,env,update]
: [parameter] command to repeat (optional)
@github.com:pforret/rexec.git
### TIPS & EXAMPLES
* use rexec run to wait until the output of a command changes
rexec run "nslookup www.newdomain.com"
* use rexec file to wait until file contents changes
rexec file /var/log/errors.log
* use rexec check to check if this script is ready to execute and what values the options/flags are
rexec check
* use rexec env to generate an example .env file
rexec env > .env
* use rexec update to update to the latest version
rexec update
* >>> bash script created with pforret/bashew
* >>> for bash development, also check IO:print pforret/setver and pforret/IO:progressbar
```
## 🔁 Examples
* wait for a DNS change to happen
```bash
> repeat -e run "nslookup www.example.com"
Run [nslookup example.com] (#1/100 @ 1 secs)
### Output changed at Fri Feb 12 15:36:28 CET 2021
### NEW OUTPUT
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
Name: example.com
Address: 188.166.1.1
###
... Ran [nslookup example.com] (#6/100 @ 36 secs) - wait 5 seconds
```
* wait for a file to change
```bash
> repeat -d file /var/log/results.txt
Check [/var/log/results.txt] (#5/100 @ 21 secs)
### File changed at Fri Feb 12 16:09:13 CET 2021
### FILE DIFF
5d4
< Error in line 4
###
... Check [/var/log/results.txt] (#8/100 @ 36 secs) - wait 5 seconds
```
## 📝 Acknowledgements
* script created with [bashew](https://github.com/pforret/bashew)
© 2021 Peter Forret