Running ffmpeg in loop seems to change reading from file
Hi everyone,
I am fairly new to shell scripting. I want to read in numbers from a file (one number per line). This works perfectly fine
and yields the correct output:
If I however run a ffmpeg command in the loop
the output changes (I ommit the ffmpeg output and just give the echo command output):
If I add two spaces in the txt-file I read in, such as
the echo command returns the right numbers again - for some reason, the ffmpeg commands seems to result in the skipping of the first two characters in the new line.
If I put an additional for-loop around the while loop to loop over several files such as in
The first line of every file is read in correctly, but for all subsequent lines, the first two characters are skipped. Does anybody have any idea what is going on? I am very grateful for any hint.
Need help on making a loop script base on what is inside a file...
File to read: List.txt
List.txt contains below w/c are file name as well:
SAMPLEa
SAMPLEb
SAMPLEc
SAMPLEd
SAMPLEe
SAMPLEf
.
.
.
Want to make a loop that will manipulate those that are inside the file.txt w/c are... (3 Replies)
Hi Friends ,
Sorry if this is a repeated question ,
The input file contains 5 lines , so the the values of the variables i and count should b
i=5;
count=15
but the variables are not updating , the value of variables showing i=0 and count =0 only.:mad:
can any1 help me please. (11 Replies)
Hi,
I am building a script to grep for a string in all the files from a folder and display the results.
I am reading the files one by one by placing the names in other file using while loop
my code is as below
while read inp
do
chk=`grep -c "$str" $pth/$inp`
... (2 Replies)
Hi Guys
I am new to scripting.Please forgive for asking basic questions.
I want to write a script to check whether the logs are getting updated in last 15 mins.
cat server
192.168.1.6
192.168.1.7
cat list
192.168.1.7 /logs/logpath1
192.168.1.7 /logs/logpath2
192.168.1.6... (4 Replies)
Hi,
I am on HP-UX and K shell.
When I am using while/for loop for reading a file. It is working fine but not reading tabs:
Suppose, if the line is: ; ;COMP; ; ; ;
then loop is reading as
; ;COMP; ;... (5 Replies)
Hi All,
I need small help on for loop syntax in C shell.
How can we read the values from a file (line by line) through C shell loop.
For Ex:
$Cat file1
data1
data2
data3
data4
$
I have to print those values in a variable and have to perform some steps...
Can anyone help on... (2 Replies)
Hi,
I am writing in a file through cat command. This file will contain the path of file along with filename. e.g. /home/user/folder1/folder2/filename.txt
There might be very large number of this path in same file like say 140
when I try to run while command:
while read -r file
do
//command... (8 Replies)
Hello,
I have a problem with Greek subtitle font size when I map a subtitle file into a video in ffmpeg.
I ran below code:
ffmpeg -i video.mp4 -sub_charenc CP1253 -i video_sub.srt -c:v copy -c:a copy \
-c:s mov_text -metadata:s:s:0 language=gr mapped_video.mp4
When I play it in VLC,... (2 Replies)
Hello All,
I have two files with me file1.txt and file2.txt
file1.txt has:
333
222
111
file2.txt has
ccc
bbb
aaa
ccc is related to 333 only, bbb is related to 222 only and aaa is related to 111 only.
I have to get the values from each of the file and pass them in the URL... (3 Replies)
Hello, I was inquiring myself if it's possible to call ffmpeg in loop, an in each iteration, ffmpeg will pick one of the files in a directory and produce a new with a slightest different name. Can be as simple as a '*' in the beginning of the file name.
I know how to use ffmpeg to do the... (2 Replies)
Discussion started by: colt
2 Replies
LEARN ABOUT SUNOS
echo
echo(1B) SunOS/BSD Compatibility Package Commands echo(1B)NAME
echo - echo arguments to standard output
SYNOPSIS
/usr/ucb/echo [-n] [argument]
DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output.
echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi-
ronment variables.
For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows:
o echo your current-working-directory's full pathname
o pipe the output through tr to translate the path's embedded slash-characters into space-characters
o pipe that output through wc -w for a count of the names in your path.
example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w"
See tr(1) and wc(1) for their functionality.
The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if
the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape
characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's
echo() also understands a as the audible bell character; however, these commands do not have an -n option.
OPTIONS -n Do not add the NEWLINE to the output.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWscpu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5)NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases.
SunOS 5.10 3 Aug 1994 echo(1B)