/Shell/Bash/Remove white space from file and display result

Remove white space from file and display result

#!/usr/bin/env bash

function show_help()
{
  ME=$(basename "$0")
  IT=$(cat <<EOF

  usage: $ME {REPLACE_WITH}
  
  NOTE: If you pass in TAB, then multiple spaces are replaced with a TAB character

  no args -> multiple spaces replaced with a single space
  TAB     -> multiple spaces replaced with a single tab character
  TEST    -> multiple spaces replaced with the phrase "TEST"

  $ME 
EOF
)
  echo "$IT"
  echo
  exit
}


if [ "$1" == "help" ]
then
  show_help
fi

# Show help if we're not getting data from stdin
if [ -t 0 ]; then
  show_help
fi

REPLACE_WITH=${1:-' '}

if [ "$REPLACE_WITH" == "tab" ]
then
  REPLACE_WITH=$'\t'
fi
if [ "$REPLACE_WITH" == "TAB" ]
then
  REPLACE_WITH=$'\t'
fi

sed "s/ \{1,\}/$REPLACE_WITH/gp"

Source: unix.stackexchange.com

Similar codes

0 vote311 views1 answer
Module enzyme-to-json/serializer in the snapshotSerializers option was not found. <rootDir> is
Shell/Bash
1 vote329 views1 answer
Ansible ignore tag
Shell/Bash
0 vote307 views1 answer
Get file until match without including
Shell/Bash
32 votes354 views6 answers
How to install pip ubuntu python2
Shell/Bash
0 vote328 views1 answer
Rdp github shadow
Shell/Bash
1 vote359 views2 answers
Cannot install under Rosetta 2 in ARM default prefix (/opt/homebrew
Shell/Bash
2 votes349 views1 answer
Serverless not using aws profile
Shell/Bash
13 votes293 views1 answer
Sudo snap install slack –classic
Shell/Bash
0 vote379 views4 answers
Ubuntu install meslo font
Shell/Bash
0 vote326 views1 answer
Another linux info
Shell/Bash