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| -rw-r--r-- | src/SUMMARY.md | 1 | ||||
| -rw-r--r-- | src/cli/README.md | 1 | ||||
| -rw-r--r-- | src/cli/tr.md | 39 |
3 files changed, 41 insertions, 0 deletions
diff --git a/src/SUMMARY.md b/src/SUMMARY.md index e770c09..24c679f 100644 --- a/src/SUMMARY.md +++ b/src/SUMMARY.md @@ -12,6 +12,7 @@ - [sed](./cli/sed.md) - [column](./cli/column.md) - [sort](./cli/sort.md) + - [tr](./cli/tr.md) - [Tools](./tools/README.md) - [tmux](./tools/tmux.md) diff --git a/src/cli/README.md b/src/cli/README.md index 53c64b7..2625899 100644 --- a/src/cli/README.md +++ b/src/cli/README.md @@ -4,3 +4,4 @@ - [sed](./sed.md) - [column](./column.md) - [sort](./sort.md) +- [tr](./tr.md) diff --git a/src/cli/tr.md b/src/cli/tr.md new file mode 100644 index 0000000..a878924 --- /dev/null +++ b/src/cli/tr.md @@ -0,0 +1,39 @@ +# tr(1) + +``` +tr [opt] str1 [str2] + -d delete characters in str1 + -s squeeze repeating sequence of characters in str1 +``` + +## Examples + +### To lower +```sh +echo MoOsE | tr '[:upper:]' '[:lower:]' +# output: moose +``` + +### Replace characters +```sh +echo moose | tr 'o' '-' +# output: m--se + +echo moose | tr 'os' '-' +# output: m---e +``` + +### Remove specific characters +```sh +echo moose | tr -d 'o' +# output: mse + +echo moose | tr -d 'os' +# output: me +``` + +### Squeeze character sequences +```sh +echo moooooossse | tr -s 'os' +# output: mose +``` |