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writting to disk and compress with xz at the same time
How to convert all files from gzip to xz on the fly (and recursively)?How can I tell if the pipe buffer is full?Use time ,timeout and ulimit commands properlyNamed pipes: several experiments leads to confusiongrep script - output lines at the same time into echoCan a pipe be used instead of exec in - find / -name “.txt” -exec cp /junk ;On-the-fly stream compression that doesn't spill over into hardware resources?Pipe limit data in bytesHow to concatenate results of multiple commands and pipe into another without intermediate file?Tee does not write to file when combined to pipestderr stdout to log with date and time also show output to tty but without date and time
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I have a program and writes traces on disk and the size becomes very large. Normally, I use
./run output.txt
xz output.txt
I want to know if I can pipe xz at the same time as output.txt is being written. I see this topic, but not sure it is applicable for me.
bash pipe xz
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
add a comment |
I have a program and writes traces on disk and the size becomes very large. Normally, I use
./run output.txt
xz output.txt
I want to know if I can pipe xz at the same time as output.txt is being written. I see this topic, but not sure it is applicable for me.
bash pipe xz
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
1
See if your ./run tool can write its output to stdout instead of a file. The answer depends on that.
– Janka
8 hours ago
add a comment |
I have a program and writes traces on disk and the size becomes very large. Normally, I use
./run output.txt
xz output.txt
I want to know if I can pipe xz at the same time as output.txt is being written. I see this topic, but not sure it is applicable for me.
bash pipe xz
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
I have a program and writes traces on disk and the size becomes very large. Normally, I use
./run output.txt
xz output.txt
I want to know if I can pipe xz at the same time as output.txt is being written. I see this topic, but not sure it is applicable for me.
bash pipe xz
bash pipe xz
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
asked 8 hours ago
mahmoodmahmood
3992 gold badges8 silver badges23 bronze badges
3992 gold badges8 silver badges23 bronze badges
1
See if your ./run tool can write its output to stdout instead of a file. The answer depends on that.
– Janka
8 hours ago
add a comment |
1
See if your ./run tool can write its output to stdout instead of a file. The answer depends on that.
– Janka
8 hours ago
1
1
See if your ./run tool can write its output to stdout instead of a file. The answer depends on that.
– Janka
8 hours ago
See if your ./run tool can write its output to stdout instead of a file. The answer depends on that.
– Janka
8 hours ago
add a comment |
1 Answer
1
active
oldest
votes
If your ./run will produce its output to stdout if not given a file argument (which is customary in Unix/Linux), then you can simply use:
./run | xz -c >output.txt.xz
If it needs a filename argument, but if it's fine writing to a pipe, then you can either use a special device such as /dev/stdout or /dev/fd/1 (both should be equivalent), like so:
./run /dev/stdout | xz -c >output.txt.xz
Or you can use process substitution, which is typically available in most modern shells such as bash, zsh, or ksh, which will end up using a device from /dev/fd behind the scenes to accomplish the same:
./run >(xz -c >output.txt.xz)
This last one also needs ./run to be able to write to a pipe, but it should work better than the others if ./run writes to output.txt and to stdout in its normal operation, in which case the output would get mixed up if you redirect both to stdout.
Programs are usually ok writing to a pipe, but some of them might want to seek and rewind to offsets within an output file, which is not possible in a pipe. If that's the case, then writing to a temporary file and then compressing it is probably all you can do.
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
add a comment |
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If your ./run will produce its output to stdout if not given a file argument (which is customary in Unix/Linux), then you can simply use:
./run | xz -c >output.txt.xz
If it needs a filename argument, but if it's fine writing to a pipe, then you can either use a special device such as /dev/stdout or /dev/fd/1 (both should be equivalent), like so:
./run /dev/stdout | xz -c >output.txt.xz
Or you can use process substitution, which is typically available in most modern shells such as bash, zsh, or ksh, which will end up using a device from /dev/fd behind the scenes to accomplish the same:
./run >(xz -c >output.txt.xz)
This last one also needs ./run to be able to write to a pipe, but it should work better than the others if ./run writes to output.txt and to stdout in its normal operation, in which case the output would get mixed up if you redirect both to stdout.
Programs are usually ok writing to a pipe, but some of them might want to seek and rewind to offsets within an output file, which is not possible in a pipe. If that's the case, then writing to a temporary file and then compressing it is probably all you can do.
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
add a comment |
If your ./run will produce its output to stdout if not given a file argument (which is customary in Unix/Linux), then you can simply use:
./run | xz -c >output.txt.xz
If it needs a filename argument, but if it's fine writing to a pipe, then you can either use a special device such as /dev/stdout or /dev/fd/1 (both should be equivalent), like so:
./run /dev/stdout | xz -c >output.txt.xz
Or you can use process substitution, which is typically available in most modern shells such as bash, zsh, or ksh, which will end up using a device from /dev/fd behind the scenes to accomplish the same:
./run >(xz -c >output.txt.xz)
This last one also needs ./run to be able to write to a pipe, but it should work better than the others if ./run writes to output.txt and to stdout in its normal operation, in which case the output would get mixed up if you redirect both to stdout.
Programs are usually ok writing to a pipe, but some of them might want to seek and rewind to offsets within an output file, which is not possible in a pipe. If that's the case, then writing to a temporary file and then compressing it is probably all you can do.
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
add a comment |
If your ./run will produce its output to stdout if not given a file argument (which is customary in Unix/Linux), then you can simply use:
./run | xz -c >output.txt.xz
If it needs a filename argument, but if it's fine writing to a pipe, then you can either use a special device such as /dev/stdout or /dev/fd/1 (both should be equivalent), like so:
./run /dev/stdout | xz -c >output.txt.xz
Or you can use process substitution, which is typically available in most modern shells such as bash, zsh, or ksh, which will end up using a device from /dev/fd behind the scenes to accomplish the same:
./run >(xz -c >output.txt.xz)
This last one also needs ./run to be able to write to a pipe, but it should work better than the others if ./run writes to output.txt and to stdout in its normal operation, in which case the output would get mixed up if you redirect both to stdout.
Programs are usually ok writing to a pipe, but some of them might want to seek and rewind to offsets within an output file, which is not possible in a pipe. If that's the case, then writing to a temporary file and then compressing it is probably all you can do.
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
If your ./run will produce its output to stdout if not given a file argument (which is customary in Unix/Linux), then you can simply use:
./run | xz -c >output.txt.xz
If it needs a filename argument, but if it's fine writing to a pipe, then you can either use a special device such as /dev/stdout or /dev/fd/1 (both should be equivalent), like so:
./run /dev/stdout | xz -c >output.txt.xz
Or you can use process substitution, which is typically available in most modern shells such as bash, zsh, or ksh, which will end up using a device from /dev/fd behind the scenes to accomplish the same:
./run >(xz -c >output.txt.xz)
This last one also needs ./run to be able to write to a pipe, but it should work better than the others if ./run writes to output.txt and to stdout in its normal operation, in which case the output would get mixed up if you redirect both to stdout.
Programs are usually ok writing to a pipe, but some of them might want to seek and rewind to offsets within an output file, which is not possible in a pipe. If that's the case, then writing to a temporary file and then compressing it is probably all you can do.
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
answered 7 hours ago
filbrandenfilbranden
12.4k2 gold badges22 silver badges52 bronze badges
12.4k2 gold badges22 silver badges52 bronze badges
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add a comment |
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1
See if your ./run tool can write its output to stdout instead of a file. The answer depends on that.
– Janka
8 hours ago