echo"Error on or near line${parent_lineno}:${message}; exiting with status${code}" else echo"Error on or near line${parent_lineno}; exiting with status${code}" fi exit"${code}" } trap'error ${LINENO}'ERR …然后,每当创建临时文件时: 1 2 temp_foo="$(mktemp -t foobar.XXXXXX)" ...
/bin/bash## Name: test-bucket-1## Purpose:# Performs the test-bucket number 1 for Product X.# (Actually, this is a sample shell script,# which invokes some system commands# to illustrate how to construct a Bash script)## Notes:# 1) The environment variable TEST_VAR must be set# (...
/bin/bash2# Script to collect the status of lshw output from home servers3# Dependencies:4# * Open SSH: http://www.openssh.com/portable.html5# * LSHW: http://ezix.org/project/wiki/HardwareLiSter6# * JQ: http://stedolan.github.io/jq/7# * timeout: https://www.gnu.org/software/...
mands from this file, then exits. Bash's exit status is the exit status of the last com‐ mand executed in the script. If no commands are executed, the exit status is 0. An attempt is first made to open the file in the current directory, and, if no file is found, then the shell...
这本书的目的是汇总只使用内置bash的特性来实现总所周知和鲜为人知的各项任务。 使用此参考书中的代码段可以帮助你从脚本中删除不需要的依赖项,并且在大多数情况下可以使它们运行的更快。 我偶然碰到了这些技巧并在开发neofetch, pxltrm 和一些其他小的项目的时候发现了一些别的技巧。
printf "\\\e[1;31mUSAGE: \\\e[1;37m'addauser username'\\\e[1;31m: EXITING...\\\n" exit 201 else if [ "\$UID" != "0" ] then printf "\\\n\\\e[1;31mUSAGE:\\\e[1;37m %s\\\e[1;31m: EXITING...\\\e[0m\\\n\\\n" "Script '\${0##*/}' must be ...
This can be used to add conditional support for different Operating Systems without needing to call uname."$OSTYPE"Get the current working directoryThis is an alternative to the pwd built-in."$PWD"Get the number of seconds the script has been running"$SECONDS"...
Bash's exit status is the exit status of the last command executed in the script. If no commands are executed, the exit status is 0. An attempt is first made to open the file in the current directory, and, if no file is found, then the shell searches the directories in PATH for ...
bash's exit status is the exit status of the last command executed in the script. If no commands are executed, the exit status is 0. An attempt is first made to open the file in the current directory, and if no file is found, the shell searches the directories in PATH for the ...
Provide one function to terminate the script when there are errors When possible, provide functions that do a single task well Capture the output of each script, while watching the output being produced Inside each script, capture the return code of each line command ...