/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 vote279 views1 answer
Bluetooth headphone not working linux mint
Shell/Bash
0 vote266 views3 answers
Install gitlab-ce on centos
Shell/Bash
0 vote284 views1 answer
Missing mysql_config
Shell/Bash
-1 vote323 views1 answer
Dokcer not working
Shell/Bash
0 vote278 views3 answers
Install kind
Shell/Bash
4 votes286 views3 answers
Git push username password
Shell/Bash
0 vote305 views1 answer
Linux mv all folder to previous folder
Shell/Bash
5 votes216 views1 answer
Do you need to install type definitions for node
Shell/Bash
0 vote281 views1 answer
Change language to english in centos
Shell/Bash
0 vote324 views1 answer
Install imblearn
Shell/Bash