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Diffstat (limited to 'usr.bin/learn/lib/files/L7.3a')
| -rw-r--r-- | usr.bin/learn/lib/files/L7.3a | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/usr.bin/learn/lib/files/L7.3a b/usr.bin/learn/lib/files/L7.3a new file mode 100644 index 00000000000..f757a518a0c --- /dev/null +++ b/usr.bin/learn/lib/files/L7.3a @@ -0,0 +1,28 @@ +#print +Sometimes ? is too flexible, and you +only want to allow a few characters. For example, +you might want to abbreviate + ls memo.ab memo.ac +without picking up "memo.ad", "!"memo.ae", and so forth. +You can match one of a set of particular characters by +putting them in brackets "[]" in the list you use with "ls". +For example, + [bc] +matches either b or c but no other letters. +Thus the command + ls memo.a[bc] +would match "memo.ab", "memo.ac", and nothing else. +Try that command in this directory: type a plain +"ls" first, and then "ls memo.a[bc]". +How many files does "ls memo.a[bc]" match? +Type "answer N" where N is the number. +#create memo.ab +#create memo.abc +#create memo.bc +#copyin +#user +#uncopyin +#match 1 +#log +#next +7.3b 2 |