How can I replace a line that starts with "string1" with "string2 lala" using Bash script?
Thanks in advance
That does not work... I need to delete all the line that contains "string1", not just replace that part
Neuquino
2010-03-14 02:41:47
It supports regex, so the .* should work now. Better?
Mimisbrunnr
2010-03-14 02:43:20
It worked, thanks
Neuquino
2010-03-14 02:47:18
Note that the g modifier in the second version does nothing because (a) there is only one start to each line and (b) even if the caret were omitted, the first pattern with the '.*' obliterates any other 'string1' appearances on the line.
Jonathan Leffler
2010-03-14 04:58:56
Jonathan - You are very right, about the g. It was added in the original suggestion before edits.
Mimisbrunnr
2010-03-14 05:07:42
+2
A:
using bash,
#!/bin/bash
file="myfile"
while read -r line
do
case "$line" in
string1* ) line="string2 lala"
esac
echo "$line"
done <"$file" > temp
mv temp $file
using awk
awk '/^string1/{$0="string2 lala"}1' file
ghostdog74
2010-03-14 04:25:52