tr

Craig D'Silva · Craig D'Silva · commit 8f21fbc23d2e · 2026-03-20T14:06:39.000Z
diff --git a/shell-pipelines/tr/script-01.sh b/shell-pipelines/tr/script-01.sh
@@ -6,3 +6,5 @@ set -euo pipefail
 # The author got feedback that they're using too many exclamation marks (!).
 #
 # TODO: Write a command to output the contents of text.txt with every exclamation mark (!) replaced with a full-stop (.).
+
+cat text.txt | tr '!' '.'
diff --git a/shell-pipelines/tr/script-02.sh b/shell-pipelines/tr/script-02.sh
@@ -7,3 +7,5 @@ set -euo pipefail
 # so every Y should be a Z, and every Z should be a Y!
 #
 # TODO: Write a command to output the contents of text.txt with every Y and Z swapped (both upper and lower case).
+
+cat text.txt | tr 'YZyz' 'ZYzy'

Original file line number	Diff line number	Diff line change
`@@ -6,3 +6,5 @@ set -euo pipefail`
`6`	`6`	`# The author got feedback that they're using too many exclamation marks (!).`
`7`	`7`	`#`
`8`	`8`	`# TODO: Write a command to output the contents of text.txt with every exclamation mark (!) replaced with a full-stop (.).`
	`9`	`+`
	`10`	`+cat text.txt \| tr '!' '.'`
Original file line number	Diff line number	Diff line change
`@@ -7,3 +7,5 @@ set -euo pipefail`
`7`	`7`	`# so every Y should be a Z, and every Z should be a Y!`
`8`	`8`	`#`
`9`	`9`	`# TODO: Write a command to output the contents of text.txt with every Y and Z swapped (both upper and lower case).`
	`10`	`+`
	`11`	`+cat text.txt \| tr 'YZyz' 'ZYzy'`