sed replace in file
sed -i 's/foo/bar/g' hello.txtsed replace in file
sed -i 's/foo/bar/g' hello.txtreplace a newline using sed linux bash
$ echo 'foo
bar
baz
foo2
bar2
baz2'
| tr 'n' ' 00'
| sed 's:x00x00.*:n:g'
| tr ' 00' 'n'replace a newline using sed linux bash
sed ':a;N;$!ba;s/n/ /g' file
:a create a label 'a'
N append the next line to the pattern space
$! if not the last line, ba branch (go to) label 'a'
s substitute, /n/ regex for new line, / / by a space, /g global match (as many times as it can)replace a newline using sed linux bash
#All alternatives, unlike sed will not need to reach the last line to begin the process
#with bash, slow
while read line; do printf "%s" "$line "; done < file
#with perl, sed-like speed
perl -p -e 's/n/ /' file
#with tr, faster than sed, can replace by one character only
tr 'n' ' ' < file
#with paste, tr-like speed, can replace by one character only
paste -s -d ' ' file
#with awk, tr-like speed
awk 1 ORS=' ' file
#Other alternative like "echo $(< file)" is slow, works only on small files and needs to process the whole file to begin the process.Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
