10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi,
Can I get some explanation around this bash redirection?
From what I have read, x < y means call the shell to redirect the output of y into x.
Does this mean that this sequence of commands is executed from right to left?
diff <(sort testfile.txt) <(sort testfile2.txt)
Thanks,
edit... (2 Replies)
Discussion started by: sand1234
2 Replies
2. Shell Programming and Scripting
Hi,
when I try to redirect input and the command is described as a string within an array redirection does not work. why?
#!/bin/bash
dir=("tail < ./hello.txt")
tail < ./hello.txt #works
${dir} #does not work (2 Replies)
Discussion started by: heinzel
2 Replies
3. Shell Programming and Scripting
Hi gurus,
I have a question, need some of your inputs...
I have a command like this :
export LINE_COUNT=`wc -l test.dat | awk '{print $1}'`
echo $LINE_COUNT --- > gives me 2 which is fine as the file has 2 lines.
This works fine if the file test.dat is present but in case... (3 Replies)
Discussion started by: calredd
3 Replies
4. Shell Programming and Scripting
I want to redirect stderr and have the following peice of code
$ cat t1.ksh
#!/bin/ksh
func2()
{
diff /tmp/jdlkwjdlkejew /tmp/djlkwejdlewdjew >$OUTPUT_FILE 2>>$ERR_FILE
}
func1()
{
let counter=0
while
do
print -u2 "Error: In main function"
func2
let... (1 Reply)
Discussion started by: BeefStu
1 Replies
5. Shell Programming and Scripting
for shell operators like <, >, <<, and >> do the LHS always have to be a process or device and the RHS a file or device?
Is it possible for the RHS to be a process? (1 Reply)
Discussion started by: stevenswj
1 Replies
6. Shell Programming and Scripting
I just wondered if I'm understanding this command line correctly
cat 2>save1 0<memo | sort 2>save2 1>letter
This means that stdin will read from memo and if there is an error then stderr will write to save1. Am I correct in saying that the sort command will sort the memo file and write... (2 Replies)
Discussion started by: snag49ers
2 Replies
7. Shell Programming and Scripting
Hi all,
I am working with the Grinder tool (unrelated to my question) to redirect the output of a program to a file as follows:
java -cp $CLASSPATH net.grinder.TCPProxy > grinder.txt
This is a proxy server which pipes output to a file. When I do something on my proxy, more and more goes to... (1 Reply)
Discussion started by: Annorax
1 Replies
8. Shell Programming and Scripting
Hi,
in my script I need to execute the following command:
query $id 456 432
but it waits for a RETURN character from keyboard and therefore, it fails. I tried something like:
query $id 456 432 << '\n'
but, i'ts clear it is not correct. Is there any way to do this?
Thxs. (0 Replies)
Discussion started by: luistid
0 Replies
9. Shell Programming and Scripting
I came across the following problem, where file contents are overwritten using redirection. Can somebody please explain what cat << BAR seems to be doing and say why this is a problem? Explain the contents and relation between the two filenames used before the cat command. thanks
/tmp# echo... (2 Replies)
Discussion started by: newkidintown
2 Replies
10. Shell Programming and Scripting
Hello all. Is there a way to redirect output to more than one file at a time?
I have a method1() that writes to a logfile. In the method cksums are done on files by doing a
"for i in `ls`; do
cksum $i > $LOGFILE
done
"
In the logfile I want to show the cksums under each directory like... (2 Replies)
Discussion started by: yoi2hot4ya
2 Replies