cwchentw / shlibs

Tiny but Handy Aliases and Functions for Bourne Shell

shlibs

Tiny but handy aliases and functions for Bourne shell compatible shell.

Warning

Currently, shlibs intends for personal use only. The content of shlibs may change without warning. Use it at your own risk.

Why shlibs?

Instead of setting personal configuration files like .bashrc or .zshrc each time when approaching a new Unix or Unix-like system, it is easier to write common aliases and functions in an external shell script, sourcing it as needed. Therefore, we wrote shlibs as common utilities across Unix or Unix systems.

Though shlibs is for personal use only, we keep it as general as possible, from which removing personal and private data. Hence, you may apply shlibs in your own machine.

System Requirements

• A Bourne shell compatible shell
• Standard POSIX tools
• Perl

We tested shlibs against several Unix or Unix-like systems:

• Ubuntu LTS 20.04
• Rocky Linux 8.5
• openSUSE Leap 15.3
• macOS Big Sur
• FreeBSD 13.0

It should work on other Unix or Unix-like systems as well.

Usage

Load shlibs/load.sh to enable it:

$ . path/to/shlibs/load.sh

Load shlibs/unload.sh to disable it:

$ . path/to/shlibs/unload.sh

Shell Functions in shlibs

• download: download something with either wget(1) or curl(1)
• psquery: query PID by text
• trims: use perl(1) to remove trailing spases in source
• try: try specific command multiple times

try

repeat is a reserved word in Bash. Therefore, we name our function try.

By default, try try specific command for 5 times:

$ try wget -c https://example.com/path/to/software-0.1.tar.gz

You may try your command more or less times:

$ try 3 wget -c https://example.com/path/to/software-0.1.tar.gz

You may try your command until it succeeds with 0 or -1 times:

$ try -1 wget -c https://example.com/path/to/software-0.1.tar.gz

Shell Aliases in shlibs

• ls -F --color=auto
• mv -i
• cp -i
• rm -i
• mkdir -p

Variables

• Common console colors

Copyright

Copyright (c) 2019-2021 Michelle Chen. Licensed under Apache 2.0