Hi All...

I just discovered busybox, for Windows..

busybox

BusyBox v1.37.0-FRP-5398-g89ae34445 (2024-06-25 08:38:11 BST)
(mingw32-gcc 14.1.1-3.fc40; mingw32-crt 11.0.1-3.fc40; glob)

It's just one approx 600kb program that contains a selection of unix-like commands.

The commands/functions available are:

Currently defined functions:
[, [[, ar, arch, ascii, ash, awk, base32, base64, basename, bash, bc, bunzip2, busybox,
bzcat, bzip2, cal, cat, cdrop, chattr, chmod, cksum, clear, cmp, comm, cp, cpio, crc32,
cut, date, dc, dd, df, diff, dirname, dos2unix, dpkg, dpkg-deb, drop, du, echo, ed, egrep,
env, expand, expr, factor, false, fgrep, find, fold, free, fsync, ftpget, ftpput, getopt,
grep, groups, gunzip, gzip, hd, head, hexdump, httpd, iconv, id, inotifyd, install, ipcalc,
jn, kill, killall, lash, less, link, ln, logname, ls, lsattr, lzcat, lzma, lzop, lzopcat,
make, man, md5sum, mkdir, mktemp, mv, nc, nl, nproc, od, paste, patch, pdpmake, pdrop,
pgrep, pidof, pipe_progress, pkill, printenv, printf, ps, pwd, readlink, realpath, reset,
rev, rm, rmdir, rpm, rpm2cpio, sed, seq, sh, sha1sum, sha256sum, sha3sum, sha512sum, shred,
shuf, sleep, sort, split, ssl_client, stat, strings, su, sum, sync, tac, tail, tar, tee,
test, time, timeout, touch, tr, true, truncate, ts, tsort, ttysize, uname, uncompress,
unexpand, uniq, unix2dos, unlink, unlzma, unlzop, unxz, unzip, uptime, usleep, uudecode,
uuencode, vi, watch, wc, wget, which, whoami, whois, xargs, xxd, xz, xzcat, yes, zcat

QUESTION.. What are the [ and [[ functions as per the first line above?

--
/|ug
https://t.me/aabolins

--- Want fido for iOS/MacOS/Android/Win/Linux? https://shrtco.de/tpJ9yV
* Origin: Fido by Telegram BBS from Stas Mishchenkov (2:460/256)

Hej Aug!

What are the [ and [[

Along with ] and ]] they are tests and exit returning a 0 for true and 1 for false.

Try this at your busybox commandline;
[ "a" = "a" ] ; echo $?

It should return a 0 for true since a is equal to a. Now try;
[ "a" = "b" ] ; echo $?

In this case it should return a 1 for false since a is not equal to b.

Clear as mud?

Het leven is goed,
Maurice

o- -o -o o- -o -o o- o- o- o- o- -o -o -o -o -o /) (\ (\ /) (\ (\ /) /) /) /) /) (\ (\ (\ (\ (\ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ... Lieve zestien pinguïns van de Apocalyps.
--- GNU bash, version 5.2.32(1)-release (x86_64-pc-linux-gnu)
* Origin: Little Mikey's EuroPoint @ (2:280/464.113)

Hello Maurice!

Given the version of busybox, that is either an aliased ash or hush
shell. My guess is ash but the busybox config should tell the tale.

A closer inspection reveals that busybox includes several shell
choices:

ash
bash
lash
sh

echo $SHELL in all of them reports /bin/sh

Apparently google bash scripts default to [[ for all their tests. I just don't recall the reason but I am obviously getting too old for this business. :::sigh:::

I was relying on separate GNUWin32 programs before. At one time
I needed a decent split command. I eventually found it in the
GNUWin32 collection, but the maximum split it supported was
2GB. Busybox split doesn't seem to have that limitation.

--
../|ug

--- OpenXP 5.0.58
* Origin: (2:221/1.58)

Hej August!

I was relying on separate GNUWin32 programs before.

In linux those are all seperate supplied by coreutils, util-linux and other such packages. I prefer them being seperate.

but the maximum split it supported was 2GB. Busybox split
doesn't seem to have that limitation.

No suprise here. Near as I can tell coreutils' split is only limited by free disk size and free memory.

Het leven is goed,
Maurice

o- o- o- -o -o o- o- -o o- o- -o -o -o -o o- -o /) /) /) (\ (\ /) /) (\ /) /) (\ (\ (\ (\ /) (\ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^ ... Lieve zestien pinguïns van de Apocalyps.
--- GNU bash, version 5.2.32(1)-release (x86_64-pc-linux-gnu)
* Origin: Little Mikey's EuroPoint @ (2:280/464.113)