$ opkg --help
compare-versions <v1> <op> <v2>
compare versions using <= < > >= = << >>
$ man build_dir/hostpkg/opkg-2017-12-07-3b417b9f/man/opkg-cl.1.in
compare-version <version1> <operator> <version2>
compare versions using following operators :
| sudo ifconfig eth0 mtu 1200 |
| " show line number | |
| set nu | |
| " hi cursor line | |
| set cursorline | |
| "hi CursorLine cterm=NONE ctermbg=darkred ctermfg=white | |
| "hi CursorLine cterm=NONE ctermbg=darkred | |
| " highlight search | |
| se hls |
| //test js | |
| console.log('hello') |
| #!/bin/bash | |
| # ssh root@yurenchen.com "tcpdump -w - -U 'host g.cn'" | sudo wireshark -k -i - | |
| # tcpdump Capture on remote host (by ssh) & Show packets on local wireshark | |
| # $remote Need Capture permission | |
| # $filter is tcpdump capture filter | |
| # example: | |
| # $ wireshark_remote root@10.1.1.2 'host yurenchen.com' | |
| wireshark_remote(){ |
| # https://github.com/pypa/pipenv/issues/1049 | |
| # https://github.com/pypa/pipenv/blob/a4aca53b5d02a4168214a487714d9836c9415a0c/pipenv/project.py#L116 | |
| # How pipenv calc virtualenv name in `~/.local/share/virtualenvs/` | |
| import os, re, base64, hashlib | |
| def virtualenv_name(path): | |
| sanitized = re.sub(r'[ $`!*@"\\\r\n\t]', '_', os.path.basename(path))[0:42] | |
| hash = hashlib.sha256((path+'/Pipfile').encode()).digest()[:6] | |
| encoded_hash = base64.urlsafe_b64encode(hash).decode() | |
| return sanitized + '-' + encoded_hash |