Jeg har fil med 70 linjer.

Jeg vil tilføje »SLV« i starten af den linje, hvis linjen er første tegn som 0 eller 1 eller 2 eller .. 9

Intet andet er at blive ændret i filen. Please nogen rådgivning.

sed -e "s/^\([0123456789]\)/SLV \1/g" file.txt

shell

#!/bin/sh
while IFS= read -r line
do
 case $line in 
   [0-9]* ) printf "%s\n" "SLV $line";;
    *) printf "%s\n" "$line";;
 esac
done < "file" > newfile

sed 's/^[0-9]/SLV &/' file.txt

bruger Perl:

perl -pi -e 's/^(\d)/SLV \1/' file

\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d \u003d\u003d\u003d\u003d\u003d

#! / usr / bin / ksh

ls-l | grep. txt | nawk '(print $ 9)'> liste

mens læse FILE

gøre

perl -pi-e 's/01/09 \ / SWV / g' $ FILE

Udfærdiget <liste