cat is stuck on a specific file
Clash Royale CLAN TAG#URR8PPP
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I have a python script that generates a file (cap.pcap).
when I execute cat on it, it gets stuck forever (doesn't display anything).
I tried to run:
- The commands file, hd and vi. They work properly.
- lsof and fuser, they show nothing.
- cp to another file and cat on the latter. It gets stuck.
- dd to another file, same result.
< base64 cap.pcap > b64; < base64 -d b64 > cap2.pcap; cat cap2.pcap;It gets stuck again.- Sent the base64 content to another machine and tested it; it worked properly.
Also, when I execute cat on any other file: it works.
Versions:
- Ubuntu 18.04.1
- cat (GNU coreutils) 8.28
Just in case it might help,
the part of the following python script is responsible of this:
import pcapy
data =
cap = pcapy.open_live("enp0s3" , 65536 , 1 , 0)
dumper = cap.dump_open('cap.pcap')
for i in range(20):
hdr, pkt = cap.next()
dumper.dump(hdr, pkt)
if i%10 == 9:
f = open('cap.pcap', 'rb+')
data += f.read();
f.truncate(0)
f.close()
dumper.close()
cat
asked 22 mins ago
Hédi Ghédiri
1
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
up vote
0
down vote
favorite
I have a python script that generates a file (cap.pcap).
when I execute cat on it, it gets stuck forever (doesn't display anything).
I tried to run:
- The commands file, hd and vi. They work properly.
- lsof and fuser, they show nothing.
- cp to another file and cat on the latter. It gets stuck.
- dd to another file, same result.
< base64 cap.pcap > b64; < base64 -d b64 > cap2.pcap; cat cap2.pcap;It gets stuck again.- Sent the base64 content to another machine and tested it; it worked properly.
Also, when I execute cat on any other file: it works.
Versions:
- Ubuntu 18.04.1
- cat (GNU coreutils) 8.28
Just in case it might help,
the part of the following python script is responsible of this:
import pcapy
data =
cap = pcapy.open_live("enp0s3" , 65536 , 1 , 0)
dumper = cap.dump_open('cap.pcap')
for i in range(20):
hdr, pkt = cap.next()
dumper.dump(hdr, pkt)
if i%10 == 9:
f = open('cap.pcap', 'rb+')
data += f.read();
f.truncate(0)
f.close()
dumper.close()
cat
asked 22 mins ago
Hédi Ghédiri
1
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Have you triedcat -t?
– dsstorefile1
11 mins ago
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I have a python script that generates a file (cap.pcap).
when I execute cat on it, it gets stuck forever (doesn't display anything).
I tried to run:
- The commands file, hd and vi. They work properly.
- lsof and fuser, they show nothing.
- cp to another file and cat on the latter. It gets stuck.
- dd to another file, same result.
< base64 cap.pcap > b64; < base64 -d b64 > cap2.pcap; cat cap2.pcap;It gets stuck again.- Sent the base64 content to another machine and tested it; it worked properly.
Also, when I execute cat on any other file: it works.
Versions:
- Ubuntu 18.04.1
- cat (GNU coreutils) 8.28
Just in case it might help,
the part of the following python script is responsible of this:
import pcapy
data =
cap = pcapy.open_live("enp0s3" , 65536 , 1 , 0)
dumper = cap.dump_open('cap.pcap')
for i in range(20):
hdr, pkt = cap.next()
dumper.dump(hdr, pkt)
if i%10 == 9:
f = open('cap.pcap', 'rb+')
data += f.read();
f.truncate(0)
f.close()
dumper.close()
cat
asked 22 mins ago
Hédi Ghédiri
1
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have a python script that generates a file (cap.pcap).
when I execute cat on it, it gets stuck forever (doesn't display anything).
I tried to run:
- The commands file, hd and vi. They work properly.
- lsof and fuser, they show nothing.
- cp to another file and cat on the latter. It gets stuck.
- dd to another file, same result.
< base64 cap.pcap > b64; < base64 -d b64 > cap2.pcap; cat cap2.pcap;It gets stuck again.- Sent the base64 content to another machine and tested it; it worked properly.
Also, when I execute cat on any other file: it works.
Versions:
- Ubuntu 18.04.1
- cat (GNU coreutils) 8.28
Just in case it might help,
the part of the following python script is responsible of this:
import pcapy
data =
cap = pcapy.open_live("enp0s3" , 65536 , 1 , 0)
dumper = cap.dump_open('cap.pcap')
for i in range(20):
hdr, pkt = cap.next()
dumper.dump(hdr, pkt)
if i%10 == 9:
f = open('cap.pcap', 'rb+')
data += f.read();
f.truncate(0)
f.close()
dumper.close()
cat
cat
asked 22 mins ago
Hédi Ghédiri
1
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 mins ago
Hédi Ghédiri
1
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 mins ago
Hédi Ghédiri
1
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 22 mins ago
Hédi Ghédiri
1
asked 22 mins ago
Hédi Ghédiri
1
1
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Hédi Ghédiri is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Have you triedcat -t?
– dsstorefile1
11 mins ago
add a comment |Â
Have you triedcat -t?
– dsstorefile1
11 mins ago
Have you tried
cat -t?– dsstorefile1
11 mins ago
Have you tried
cat -t?– dsstorefile1
11 mins ago
add a comment |Â
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Hédi Ghédiri is a new contributor. Be nice, and check out our Code of Conduct.
Hédi Ghédiri is a new contributor. Be nice, and check out our Code of Conduct.
Hédi Ghédiri is a new contributor. Be nice, and check out our Code of Conduct.
Â
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Have you tried
cat -t?– dsstorefile1
11 mins ago