[SOLVED] sed/awk

freeroute · 09-25-2017, 07:36 AM

How could I remove backslash special character from a file with sed/awk?

input:

Code:

$P$DuOxmeTb7uGqNkkzenh6BqBu5OmpDF\/
$P$DPUN9ULZv9ICq.o53w4Kk\/685Q7mdW0
$P$DbHTs7pYRbB4s5sHzXh\/JK7kFa4SIT0

output:

Code:

$P$DuOxmeTb7uGqNkkzenh6BqBu5OmpDF/
$P$DPUN9ULZv9ICq.o53w4Kk/685Q7mdW0
$P$DbHTs7pYRbB4s5sHzXh/JK7kFa4SIT0

tried with "tr", it works:

Code:

tr -d "\\" <file | less

with "sed" I got error message:

Code:

sed -E 's/.*(\/).*/\/g' file | less

freeroute · 09-25-2017, 07:53 AM

I found the solution:

Code:

sed -E 's/\\\//\//g' file | less

grail · 09-25-2017, 08:54 AM

Why not sue the same code from tr in sed? Your first sed is in no way anything the same and your second seems to require additional information.

Code:

sed -E 's/\\//g' file

pan64 · 09-25-2017, 09:15 AM

using sed you may try another delimiter:

Code:

sed -E 's!\\/!/!g' file | less

that will be much more readable

freeroute · 09-25-2017, 09:32 AM

Thanks. Yes the delimiter was forward slash, and it was hard to read the code...

freeroute · 10-19-2017, 04:35 AM

I try to delete the escape character using awk. (deleting with sed or tr works)
Command:

Code:

awk '{gsub ("\\", ""); print $0}' file

or

Code:

awk '{gsub ("'\'", ""); print $0}' file

Not working (substitute backslash with nothing). Why?

freeroute · 10-19-2017, 06:09 AM

Solution: awk '{gsub(/\\/, ""); print}' file.txt

Regex must be between forward slashes.