Does bind actually require conversion to network byte order? Problem Description: In every top google result for "C Linux Socket Tutorial" (1, 2, 3, 4, 5 ) they convert the port (and sometimes the address) to network byte order: address.sin_family = AF_INET; address.sin_addr.s_addr = htonl(INADDR_ANY); address.sin_port = htons(PORT); bind(socket_fd, (struct sockaddr*)&address, sizeof(address)); Is this correct? … Read more
curl –connect-timeout and –max-time does not work as expected Problem Description: The following command will wait > 60 seconds on Ubuntu 22.04: curl –verbose –retry-max-time 0 –retry 0 –connect-timeout "30" –max-time "60" "https://www.google.com/" Here is the testing result: root@test:~# echo $(date) Tue Dec 6 07:26:04 PM CST 2022 root@test:~# curl –verbose –retry-max-time 0 –retry 0 … Read more
Bash list files as {path + file} Problem Description: I want to search for a file that has 1033 bytes of size. Therefore, I write ls -lRA, which outputs around 200 files, in around 20 folders. When I grep for the file with ls -lRA | grep 1033 I get one element alone, -rw-r—– 1 … Read more
Bash list files as {path + file} Problem Description: I want to search for a file that has 1033 bytes of size. Therefore, I write ls -lRA, which outputs around 200 files, in around 20 folders. When I grep for the file with ls -lRA | grep 1033 I get one element alone, -rw-r—– 1 … Read more
Bash list files as {path + file} Problem Description: I want to search for a file that has 1033 bytes of size. Therefore, I write ls -lRA, which outputs around 200 files, in around 20 folders. When I grep for the file with ls -lRA | grep 1033 I get one element alone, -rw-r—– 1 … Read more
Can you run history within a Makefile? Problem Description: Makefiles have been around for a while, so I wouldn’t be surprised if this is a duplicate! I’ve been using Makefiles to bundle bash operations with lots of flags or arguments (not their original purpose, I know) Is it possible to implement the following history command … Read more
Can you run history within a Makefile? Problem Description: Makefiles have been around for a while, so I wouldn’t be surprised if this is a duplicate! I’ve been using Makefiles to bundle bash operations with lots of flags or arguments (not their original purpose, I know) Is it possible to implement the following history command … Read more
Can you run history within a Makefile? Problem Description: Makefiles have been around for a while, so I wouldn’t be surprised if this is a duplicate! I’ve been using Makefiles to bundle bash operations with lots of flags or arguments (not their original purpose, I know) Is it possible to implement the following history command … Read more
Why does command substitution work in example 2 but not example 1? Problem Description: EXAMPLE 1: from BASH terminal (doesn’t work): $(date | sed -r ‘s/[ ]{2,}/ /gi’) EXAMPLE 2: from a BASH shell script (does work): ECHO_DATE=$(date | sed -r ‘s/[ ]{2,}/ /gi’) Solution – 1 In the first example, you’re running the result … Read more
Why does command substitution work in example 2 but not example 1? Problem Description: EXAMPLE 1: from BASH terminal (doesn’t work): $(date | sed -r ‘s/[ ]{2,}/ /gi’) EXAMPLE 2: from a BASH shell script (does work): ECHO_DATE=$(date | sed -r ‘s/[ ]{2,}/ /gi’) Solution – 1 In the first example, you’re running the result … Read more