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Top Forums UNIX for Beginners Questions & Answers Running local script remotely with arguments Post 303030700 by mukulverma2408 on Thursday 14th of February 2019 09:55:48 AM
Old 02-14-2019
Running local script remotely with arguments

Dear Experts,

I have found this script on internet that can be used to execute local script remotely
Code:
#!/bin/bash
# runremote.sh
# usage: runremote.sh localscript remoteuser remotehost arg1 arg2 ...

realscript=$1
user=$2
host=$3
shift 3

# escape the arguments
declare -a args

count=0
for arg in "$@"; do
  args[count]=$(printf '%q' "$arg")
  count=$((count+1))
done

{
  printf '%s\n' "set -- ${args[*]}"
  cat "$realscript"
} | ssh $user@$host "cat | bash /dev/stdin"

Can anyone help me understand how does this below part works
Code:
{
  printf '%s\n' "set -- ${args[*]}"
  cat "$realscript"
} | ssh $user@$host "cat | bash /dev/stdin"

 

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BZEXE(1)						      General Commands Manual							  BZEXE(1)

NAME
bzexe - compress executable files in place SYNOPSIS
bzexe [ name ... ] DESCRIPTION
The bzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``bzexe /bin/cat'' it will create the following two files: -r-xr-xr-x 1 root bin 9644 Feb 11 11:16 /bin/cat -r-xr-xr-x 1 bin bin 24576 Nov 23 13:21 /bin/cat~ /bin/cat~ is the original file and /bin/cat is the self-uncompressing executable file. You can remove /bin/cat~ once you are sure that /bin/cat works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
bzip2(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some other utilities (tail, chmod, ln, sleep). BUGS
bzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. BZEXE(1)
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