Can I get some explanation around this bash redirection?
This is a so-called "process substitution", where a process (or, rather, its outout) is put into the place of a file. First, there is a diff command:
which would list the differences between these two files. Now, both "file1" and "file2" are substituted by a process:
So, the file "testfile.txt" is sorted and the result of this sorting (the output of this process) is used as input to the diff command instead of a regular file. Likewise with the second file. This mechanism is called "process substitution".
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)
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)
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)
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)
Hi all,
Maybe someone is able to help:
Need to redirect the output of a command in realtime to a second command. Command-A executes a remote shell to another host, and outputs its results. Command-B displays a "dialog" with the outputs of Command-A.
Command-A Output:
Updating FileA... (2 Replies)
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)
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)
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)
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)
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
LEARN ABOUT DEBIAN
cut-diff
CUT-DIFF(1) Cutter's manual CUT-DIFF(1)NAME
cut-diff - show difference between 2 files with color
SYNOPSIS
cut-diff [option ...] file1 file2
DESCRIPTION
cut-diff is a diff command that uses diff feature in Cutter. It shows difference with color.
It's recommended that you use a normal diff(1) when you want to use with patch(1) or you don't need color.
OPTIONS --version
cut-diff shows its own version and exits.
-c [yes|true|no|false|auto], --color=[yes|true|no|false|auto]
If 'yes' or 'true' is specified, cut-diff uses colorized output by escape sequence. If 'no' or 'false' is specified, cut-diff never
use colorized output. If 'auto' or the option is omitted, cut-diff uses colorized output if available.
The default is auto.
-u, --unified
cut-diff uses unified diff format.
--context-lines=LINES
Shows diff context around LINES.
All lines are shown by default. When unified diff format is used, 3 lines are shown by default.
--label=LABEL, -L=LABEL
Uses LABEL as a header label. The first--label option value is used as file1's label and the second --label option value is used
asfile2's label.
Labels are the same as file names by default.
EXIT STATUS
The exit status is 0 for success, non-0 otherwise.
TODO: 0 for non-difference, 1 for difference and non-0 for errors.
EXAMPLE
In the following example, cut-diff shows difference between file1 and file2:
% cut-diff file1 file2
In the following example, cut-diff shows difference between file1 and file2 with unified diff format:
% cut-diff -u file1 file2
SEE ALSO diff(1)Cutter February 2011 CUT-DIFF(1)