Duplicate &1 in your shell (in my examle to 5) and use &5 in the subshell (so that you will write to stdout (&1) of the parent shell): exec 5>&1 FF=$(echo aaa|tee >(cat – >&5)) echo $FF Will print aaa two times, ones because of the echo in the subshell, and second time print the … Read more
The difference is subtle; “$*” creates one argument separated by the $IFS variable, while “$@” will expand into separate arguments. As an example, consider: for i in “$@”; do echo “@ ‘$i'”; done for i in “$*”; do echo “* ‘$i'”; done When run with multiple arguments: ./testvar foo bar baz ‘long arg’ @ ‘foo’ … Read more
You can use cut to access the second field: cut -f2 Edit: Sorry, didn’t realise that SVN doesn’t use tabs in its output, so that’s a bit useless. You can tailor cut to the output but it’s a bit fragile – something like cut -c 10- would work, but the exact value will depend on … Read more
How about grepping for that line then using awk version=$(awk -F “=” ‘/database_version/ {print $2}’ parameters.ini)
Under bash, there are some bashisms: The tr command could be replaced by // bashism: COMMAND=$’\nREBOOT\r \n’ echo “|${COMMAND}|” | OOT | echo “|${COMMAND//[$’\t\r\n’]}|” |REBOOT | echo “|${COMMAND//[$’\t\r\n ‘]}|” |REBOOT| See Parameter Expansion and QUOTING in bash’s man page: man -Pless\ +/\/pattern bash man -Pless\ +/\\\’string\\\’ bash man -Pless\ +/^\\\ *Parameter\\\ Exp bash man -Pless\ … Read more
To solve it in a way most close to the original problem would be probably using xargs “args per command line” option: find . -name “*_test.rb” | sed -e “p;s/test/spec/” | xargs -n2 mv It finds the files in the current working directory recursively, echoes the original file name (p) and then a modified name … Read more
According to Wikipedia, the [m|K] in the sed command you’re using is specifically designed to handle m (the color command) and K (the “erase part of line” command). Your script is trying to set absolute cursor position to 60 (^[[60G) to get all the OKs in a line, which your sed line doesn’t cover. (Properly, … Read more
To wait for any process to finish Linux (doesn’t work on Alpine, where ash doesn’t support tail –pid): tail –pid=$pid -f /dev/null Darwin (requires that $pid has open files): lsof -p $pid +r 1 &>/dev/null With timeout (seconds) Linux: timeout $timeout tail –pid=$pid -f /dev/null Darwin (requires that $pid has open files): lsof -p $pid … Read more
To get the length of a string stored in a variable, say: myvar=”some string” size=${#myvar} To confirm it was properly saved, echo it: $ echo “$size” 11
If you want to log to the same file: command1 >> log_file 2>&1 If you want different files: command1 >> log_file 2>> err_file