Re: non working code .. loop ends after one

[alex xmb ratchev]

On Wed, Mar 1, 2023, 11:23 PM Kerin Millar <kfm@plushkava.net> wrote:

> On Wed, 1 Mar 2023 22:11:35 +0100
> alex xmb ratchev <fxmbsw7@gmail.com> wrote:
>
> > hello ,
> > im at a scp file list script
> > it had few typos , then it began to work
> > but only one line outta the file
> > then nothing , just exit ..
> >
> >  the cmd is
> > bash -x scp.u shone {user}@192.168.106.97:/mnt/1/fav aa1
> >
> > shone the ' ssh hash one dir '
> > aa1 is a \0 sep file list
>
> Are you sure?
>

file list is normalo , in less -RU the \0 show as ^@ , also in terminal
IFS= read .. loop it works

In any case, the code is odd. sep=${sep:-\\0} assigns '\0' if otherwise
> undefined. [[ $sep == *\\* ]] && declare -a "sep=$( $'sep' )" will then
> make sep an array (why?) whose first element is an empty string. It is
> unnecessarily complicated and error-prone. Just let sep _be_ the empty
> string to begin with, if you expect records ending with NUL.
>

its expected , ..
i tried make \0 or \n ( or other accessable )
the bash read -d way is '' for 0 and <real n> for n

bash read -d sep 'one_char( or more i dunno )'
in awk it doesnt matter
user enters ( or by default ) \0 it needs to expand , bash read '' but uh
for awk i think i got a workaround there ..
.. i just looked , awk is elsewhere , i had an other version in mind ..

i used declare [-a] "<definition>' to make bash parse the \<code>

( $sep is _needed_ to be empty , for bash \0 case , its .. empty .. read
-rd "$empty" )

Despite this, it doesn't do the wrong thing in the case that sep begins by
> being unset/empty.
>

despire i didnt awk ..
say a user wants to enter \0 or \n
the literal string
i use this declare to make it "$read_d_value"

$ unset -v sep; sep=${sep:-\\0}; [[ $sep == *\\* ]] && declare -a "sep=(
> $'$sep' )"
> $ declare -p sep
> declare -a sep=([0]="")
> $ printf '%s\0' foo bar | { IFS= read -rd "$sep" x; IFS= read -rd "$sep"
> y; declare -p x y; }
> declare -- x="foo"
> declare -- y="bar"
>
> This works because "$sep" == "${sep[0]}" == "". If you were to produce a
> smaller test case that someone else can easily run, it could help to get to
> the bottom of it.
>

about a test case , i cant from scratch bughunt , like script new
but it should be simple a one cmd for my script ..

done .. in my tests to localhost scp said connection closed , was with
localhost and port 1112 ( andro deb proot )
i did add rest code to support port= passing
changed to laptop ip and port 22 ..
.. does same error , one file , then no more

set -x ; t=/tmp/testssh/ o=$t/out/ i=$t/in/ h=$t/hash/ port=22 ; rm -rf
"$t" ; mkdir -p "$t"{,in,out,hash} ; seq 3 >"$o/1" ; seq 5 7 >"$o/2" ; seq
100 77 >"$o/3" ; port=$port pf="$o" bash -x scp.u "$h/first"
ye@192.168.247.97:"$i" <( find "$o" -depth -type f -print0 )

-- 
> Kerin Millar
>

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