Linux utility to timetag stdout5/25/2023 I could not, however, find where those symlinks are created in the kernel (distro provided?). concept/tag-governance-real-time-updates.html,title:Real-time tag updates to Cloud. dev/stderr fd/2 symbolic stderr file descriptor Finds specific strings in files, folders, or standard output. dev/stdout fd/1 symbolic stdout file descriptor Error messages from the command are sent through the stderr (standard error) stream. Text output from the command to the shell is delivered via the stdout (standard out) stream. dev/stdin fd/0 symbolic stdin file descriptor The Linux Standard Streams In Linux, stdin is the standard input stream. dev/fd /proc/self/fd symbolic File descriptors The Linux kernel documentation says all systems should have it. Shall indicate that uudecode is to use standard output. Specifying a decode_pathname operand of /dev/stdout Additional character special files with special properties (for example, /dev/stdin, /dev/stdout, and /dev/stderr)įound by grepping the POSIX HTML: Where is the list of the POSIX C API functions?Īlso quite weirdly, the uuencode tool gives /dev/stdout a magic effect:.These are features not required by POSIX.1-2008 and may include, but are not limited to: The system may provide non-standard extensions. UnixWare unixware 5 7.1.4 i386 x86at SCO UNIX_SVR5 SunOS solaris 5.10 Generic_147147-26 sun4u sparc SUNW,Sun-Fire-V210 Some programs allow the special file name - for stdin or stdout when used as input or. Many programs write to stdout and read from either stdin or a file to allow creating a pipeline, e.g. It depends on how you will use your program and personal preference. 3 Create a bash script as the following: /bin/bash while read -r line do timestampdate echo ' timestamp line' done Call it relog.sh and set it as executable issuing chmod +x relog.sh Then you can pipe through it and it will print a timestamp followed by the original log line. Linux raspbian 3.18.7+ #755 PREEMPT Thu Feb 12 17:14: armv6l GNU/Linux Linux pidora 3.12.6hl.bcm2708 #1 PREEMPT Fri Jul 4 16:06: armv6l armv6l armv6l GNU/Linux The /dev/std work in Bash on these platforms: Linux debian-ppc 3.16.0-4-powerpc #1 Debian 3.16.7-ckt25-1 () ppc GNU/Linux
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