3 ms·

You can redirect stdin to sed directly, e.g., cat << EOF | sed -e 's/A/X/;s/B/Y/;s/C/Z/;' A Brave Cow Was Walking Crows Were Airborne All W

by sebcat 9y ago

You can redirect stdin to sed directly, e.g., cat << EOF | sed -e 's/A/X/;s/B/Y/;s/C/Z/;' A Brave Cow Was Walking Crows Were Airborne All Was Well EOF or, cat << EOF > myfile A Brave Cow Was Walking Crows Were Airborne All Was Well EOF sed -e 's/A/X/;s/B/Y/;s/C/Z/;' < myfile or (copy-pasted from shell for clarity), $ cat foo.sh #!/bin/sh sed -e 's/A/X/;s/B/Y/;s/C/Z/;' $ cat << EOF | ./foo.sh A Brave Cow EOF X Yrave Zow

aargh_aargh 9y ago
Thank you, that helped. I had to get rid of '^' anchors (because it's not processing individual lines anymore) and I put sed -e '' < /dev/stdin into the script, but the solution is now much simpler and faster.
- sebcat 9y ago
  sed works on stdin by default (see third example) so there shouldn't be a need to pipe from /dev/stdin, and line anchors should still work. $ cat myfile foo foo baz baz $ cat foo.sh #!/bin/sh sed 's/^foo/bar/;s/^baz/foobar/' $ ./foo.sh < myfile bar foo foobar baz Depending on your expression, you may want to use -E to get POSIX ERE syntax.