what is wrong with this?
for i in 'ls | grep '^[A-Z]......$' do echo $i done
if i just use the command ls | grep '^[A-Z]......$ i get the files i want
What am i missing?
M
+1
A:
you mean
for i in `ls | grep '^[A-Z]......$'`;do echo $i;done
? actully this is difference between ` and ' , limited within your shell, and not a regex or OS problem.
jokester
2010-07-09 07:49:40
+1 instead of backticks you can also use `$(....)` for command substitution. See http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_03_04.html
rudi-moore
2010-07-09 08:03:44
i still can't get this to work?
matt123
2010-07-09 08:09:27
there is no need to use external commands. see my answer
ghostdog74
2010-07-09 08:43:02
A:
Shouldn't those be backticks?
for i in `ls | grep blahblahblah`; do echo $i; done
Borealid
2010-07-09 07:50:27
+1
A:
When you use the backtick: "`" instead of the single quote "'" the output of the program between the backticks will be used as input for the shell, i.e.
for i in `ls | grep '^[A-Z]......$'`;do echo $i;done
Marc van Kempen
2010-07-09 07:59:29
+3
A:
the thing that is "wrong" , is that there is no need to use external ls command to list your files and grep your pattern. Just use the shell.
for file in [A-Z]??????
do
echo $file
done
ghostdog74
2010-07-09 08:41:55